HexoDSP/tests/node_sfilter.rs

// Copyright (c) 2021 Weird Constructor <weirdconstructor@gmail.com>
// This file is a part of HexoDSP. Released under GPL-3.0-or-later.
// See README.md and COPYING for details.

mod common;
use common::*;

fn setup_sfilter_matrix() -> (Matrix, NodeExecutor) {
    let (node_conf, node_exec) = new_node_engine();
    let mut matrix = Matrix::new(node_conf, 3, 3);

    let noise = NodeId::Noise(0);
    let sf = NodeId::SFilter(0);
    let out = NodeId::Out(0);
    matrix.place(0, 0, Cell::empty(noise).out(None, None, noise.out("sig")));
    matrix.place(
        0,
        1,
        Cell::empty(sf).input(sf.inp("inp"), None, None).out(None, None, sf.out("sig")),
    );
    matrix.place(0, 2, Cell::empty(out).input(out.inp("ch1"), None, None));
    matrix.place(1, 1, Cell::empty(noise).out(None, None, noise.out("sig")));
    matrix.place(1, 2, Cell::empty(out).input(out.inp("ch2"), None, None));
    pset_n(&mut matrix, noise, "atv", 1.0);
    matrix.sync().unwrap();

    (matrix, node_exec)
}

fn fft_with_freq_res_type(
    matrix: &mut Matrix,
    node_exec: &mut NodeExecutor,
    ftype: i64,
    freq: f32,
    res: f32,
) -> Vec<(u16, u32)> {
    let sf = NodeId::SFilter(0);
    pset_d(matrix, sf, "freq", freq);
    pset_d_wait(matrix, node_exec, sf, "res", res);
    pset_s(matrix, sf, "ftype", ftype);
    run_and_get_fft4096(node_exec, 0, 1000.0)
}

#[test]
fn check_node_sfilter_lowpass() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // Low Pass @ 1000Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 0, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(
            4.0,
            &[100, 250, 500, 750, 1000, 1500, 2000, 3000, 4000, 8000, 12000, 16000,],
            &fft[..]
        ),
        vec![
            (0, 16),
            (100, 24),
            (250, 16),
            (500, 12),
            (750, 12),
            (1000, 12),
            (1500, 8),
            (2000, 4),
            (3000, 4),
            (4000, 0),
            (8000, 0),
            (12000, 0),
        ]
    );

    //    let v = run_and_get_fft4096_2(&mut node_exec, 1);
    //    assert_eq!(
    //        avg_fft_freqs(4.0, &[
    //            100, 250, 500, 750, 1000, 1500, 2000, 3000, 4000, 8000, 12000, 16000,
    //        ], &v[..]), vec![
    //            (0, 16), (100, 24), (250, 16), (500, 12), (750, 12), (1000, 12),
    //            (1500, 8), (2000, 4), (3000, 4), (4000, 0), (8000, 0), (12000, 0),
    //        ]);
    //    assert!(false);

    // Low Pass @ 4000Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 0, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(
            4.0,
            &[100, 250, 500, 750, 1000, 1500, 2000, 3000, 4000, 8000, 12000, 16000,],
            &fft[..]
        ),
        vec![
            (0, 16),
            (100, 20),
            (250, 16),
            (500, 12),
            (750, 20),
            (1000, 16),
            (1500, 16),
            (2000, 16),
            (3000, 12),
            (4000, 8),
            (8000, 4),
            (12000, 4),
        ]
    );

    // Low Pass @ 22050Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 0, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 16), (100, 16), (1000, 16), (4000, 16), (12000, 16),]
    );

    // Low Pass @ 0Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 0, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0),]
    );
}

#[test]
fn check_node_sfilter_lowpass_tpt() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // Low Pass TPT @ 1000Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 1, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(
            4.0,
            &[100, 250, 500, 750, 1000, 1500, 2000, 3000, 4000, 8000, 12000, 16000,],
            &fft[..]
        ),
        vec![
            (0, 16),
            (100, 24),
            (250, 16),
            (500, 12),
            (750, 12),
            (1000, 12),
            (1500, 8),
            (2000, 4),
            (3000, 4),
            (4000, 0),
            (8000, 0),
            (12000, 0),
        ]
    );

    // Low Pass TPT @ 4000Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 1, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(
            4.0,
            &[100, 250, 500, 750, 1000, 1500, 2000, 3000, 4000, 8000, 12000, 16000,],
            &fft[..]
        ),
        vec![
            (0, 16),
            (100, 20),
            (250, 16),
            (500, 12),
            (750, 20),
            (1000, 16),
            (1500, 16),
            (2000, 16),
            (3000, 12),
            (4000, 8),
            (8000, 4),
            (12000, 0),
        ]
    );

    // Low Pass TPT @ 22050Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 1, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 16), (100, 16), (1000, 16), (4000, 16), (12000, 16),]
    );

    // Low Pass TPT @ 0Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 1, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0),]
    );
}

#[test]
fn check_node_sfilter_highpass() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // High Pass @ 1000Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 2, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 250, 500, 750, 1000, 1500, 2000, 3000, 8000, 12000], &fft[..]),
        vec![
            (0, 0),
            (100, 4),
            (250, 4),
            (500, 8),
            (750, 8),
            (1000, 16),
            (1500, 16),
            (2000, 16),
            (3000, 16),
            (8000, 16),
        ]
    );

    // High Pass @ 4000Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 2, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 250, 500, 750, 1000, 1500, 2000, 3000, 8000, 12000], &fft[..]),
        vec![
            (0, 0),
            (100, 0),
            (250, 0),
            (500, 0),
            (750, 4),
            (1000, 4),
            (1500, 4),
            (2000, 8),
            (3000, 12),
            (8000, 16),
        ]
    );

    // High Pass @ 22050Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 2, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 0), (100, 0), (1000, 0), (4000, 8), (12000, 16),]
    );

    // High Pass @ 0Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 2, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 24), (100, 16), (1000, 16), (4000, 16), (12000, 16),]
    );
}

#[test]
fn check_node_sfilter_highpass_tpt() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // High Pass TPT @ 1000Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 3, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 250, 500, 750, 1000, 1500, 2000, 3000, 8000, 12000], &fft[..]),
        vec![
            (0, 0),
            (100, 0),
            (250, 4),
            (500, 8),
            (750, 8),
            (1000, 16),
            (1500, 16),
            (2000, 16),
            (3000, 16),
            (8000, 16),
        ]
    );

    // High Pass TPT @ 4000Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 3, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 250, 500, 750, 1000, 1500, 2000, 3000, 8000, 12000], &fft[..]),
        vec![
            (0, 0),
            (100, 0),
            (250, 0),
            (500, 0),
            (750, 4),
            (1000, 4),
            (1500, 4),
            (2000, 8),
            (3000, 12),
            (8000, 16),
        ]
    );

    // High Pass TPT @ 22050Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 3, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0),]
    );

    // High Pass TPT @ 0Hz
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 3, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 24), (100, 16), (1000, 16), (4000, 16), (12000, 16),]
    );
}

#[test]
fn check_node_sfilter_halsvf_lowpass() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // Low Pass Hal Chamberlin SVF @ 1000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 4, 1000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 20),
            (500, 20),
            (700, 50),
            (900, 240),
            (1000, 60),
            (1500, 10),
            (2000, 0),
            (3000, 0),
            (4000, 0)
        ]
    );

    // Low Pass Hal Chamberlin SVF @ 1000Hz RES=0.5
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 4, 1000.0, 0.5);
    assert_eq!(
        avg_fft_freqs(10.0, &[500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 20),
            (500, 20),
            (700, 30),
            (900, 40),
            (1000, 20),
            (1500, 0),
            (2000, 0),
            (3000, 0),
            (4000, 0)
        ]
    );

    // Low Pass Hal Chamberlin SVF @ 1000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 4, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 10),
            (500, 20),
            (700, 20),
            (900, 10),
            (1000, 10),
            (1500, 0),
            (2000, 0),
            (3000, 0),
            (4000, 0)
        ]
    );

    // Low Pass Hal Chamberlin SVF @ 4000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 4, 4000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 24),
            (100, 16),
            (500, 20),
            (1000, 20),
            (2000, 40),
            (3500, 340),
            (4000, 180),
            (5000, 20),
            (6000, 8),
            (8000, 0)
        ]
    );

    // Low Pass Hal Chamberlin SVF @ 4000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 4, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 20),
            (100, 12),
            (500, 16),
            (1000, 16),
            (2000, 20),
            (3500, 20),
            (4000, 16),
            (5000, 8),
            (6000, 4),
            (8000, 0)
        ]
    );

    // Low Pass Hal Chamberlin SVF @ 22050Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 4, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 16), (100, 16), (1000, 16), (4000, 16), (12000, 16), (16000, 24), (20000, 16)]
    );

    // Low Pass Hal Chamberlin SVF @ 22050Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 4, 22050.0, 1.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 8), (100, 16), (1000, 16), (4000, 24), (12000, 160), (16000, 176), (20000, 24)]
    );

    // Low Pass Hal Chamberlin SVF @ 0Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 4, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 12), (10, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0),]
    );

    // Low Pass Hal Chamberlin SVF @ 0Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 4, 0.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[1, 5, 10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 56), (1, 0), (5, 0), (10, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0),]
    );
}

#[test]
fn check_node_sfilter_halsvf_highpass() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // High Pass Hal Chamberlin SVF @ 1000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 5, 1000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 0),
            (500, 0),
            (700, 30),
            (900, 220),
            (1000, 80),
            (1500, 30),
            (2000, 20),
            (3000, 20),
            (4000, 10)
        ]
    );

    // High Pass Hal Chamberlin SVF @ 1000Hz RES=0.5
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 5, 1000.0, 0.5);
    assert_eq!(
        avg_fft_freqs(10.0, &[500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 0),
            (500, 0),
            (700, 20),
            (900, 30),
            (1000, 30),
            (1500, 20),
            (2000, 20),
            (3000, 20),
            (4000, 20)
        ]
    );

    // High Pass Hal Chamberlin SVF @ 1000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 5, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 0),
            (500, 0),
            (700, 10),
            (900, 10),
            (1000, 20),
            (1500, 20),
            (2000, 20),
            (3000, 20),
            (4000, 10)
        ]
    );

    // High Pass Hal Chamberlin SVF @ 4000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 5, 4000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 0),
            (100, 0),
            (500, 0),
            (1000, 0),
            (2000, 20),
            (3500, 320),
            (4000, 200),
            (5000, 40),
            (6000, 28),
            (8000, 20)
        ]
    );

    // High Pass Hal Chamberlin SVF @ 4000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 5, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 0),
            (100, 0),
            (500, 0),
            (1000, 0),
            (2000, 8),
            (3500, 12),
            (4000, 16),
            (5000, 16),
            (6000, 20),
            (8000, 20)
        ]
    );

    // High Pass Hal Chamberlin SVF @ 22050Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 5, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 0), (100, 0), (1000, 8), (4000, 24), (12000, 32), (16000, 40), (20000, 40)]
    );

    // High Pass Hal Chamberlin SVF @ 22050Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 5, 22050.0, 1.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 0), (100, 0), (1000, 0), (4000, 8), (12000, 144), (16000, 192), (20000, 48)]
    );

    // High Pass Hal Chamberlin SVF @ 0Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 5, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 52), (10, 12), (100, 20), (1000, 16), (4000, 16), (12000, 16)]
    );

    // High Pass Hal Chamberlin SVF @ 0Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 5, 0.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 112), (10, 36), (100, 16), (1000, 20), (4000, 16), (12000, 20)]
    );
}

#[test]
fn check_node_sfilter_halsvf_bandpass() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // Band Pass Hal Chamberlin SVF @ 1000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 6, 1000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[250, 500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 0),
            (250, 0),
            (500, 10),
            (700, 40),
            (900, 230),
            (1000, 70),
            (1500, 20),
            (2000, 0),
            (3000, 0),
            (4000, 0)
        ]
    );

    // Band Pass Hal Chamberlin SVF @ 1000Hz RES=0.5
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 6, 1000.0, 0.5);
    assert_eq!(
        avg_fft_freqs(10.0, &[250, 500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 0),
            (250, 0),
            (500, 10),
            (700, 30),
            (900, 30),
            (1000, 30),
            (1500, 10),
            (2000, 0),
            (3000, 0),
            (4000, 0)
        ]
    );

    // Band Pass Hal Chamberlin SVF @ 1000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 6, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[250, 500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 0),
            (250, 0),
            (500, 10),
            (700, 10),
            (900, 10),
            (1000, 10),
            (1500, 10),
            (2000, 0),
            (3000, 0),
            (4000, 0)
        ]
    );

    // Band Pass Hal Chamberlin SVF @ 4000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 6, 4000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 0),
            (100, 0),
            (500, 0),
            (1000, 0),
            (2000, 20),
            (3500, 330),
            (4000, 190),
            (5000, 30),
            (6000, 10),
            (8000, 0)
        ]
    );

    // Band Pass Hal Chamberlin SVF @ 4000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 6, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 0),
            (100, 0),
            (500, 0),
            (1000, 0),
            (2000, 10),
            (3500, 20),
            (4000, 10),
            (5000, 10),
            (6000, 10),
            (8000, 10)
        ]
    );

    // Band Pass Hal Chamberlin SVF @ 22050Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 6, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0), (16000, 0), (20000, 0)]
    );

    // Band Pass Hal Chamberlin SVF @ 22050Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 6, 22050.0, 1.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 0), (100, 0), (1000, 0), (4000, 8), (12000, 136), (16000, 200), (20000, 48)]
    );

    // Band Pass Hal Chamberlin SVF @ 0Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 6, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 48), (10, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0)]
    );

    // Band Pass Hal Chamberlin SVF @ 0Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 6, 0.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 4), (10, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0)]
    );
}

#[test]
fn check_node_sfilter_halsvf_notch() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // Notch Hal Chamberlin SVF @ 1000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 7, 1000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(
            10.0,
            &[500, 700, 850, 900, 950, 1000, 1100, 1200, 1400, 2000, 3000, 4000, 12000],
            &fft[..]
        ),
        vec![
            (0, 10),
            (500, 10),
            (700, 10),
            (850, 10),
            (900, 20),
            (950, 10),
            (1000, 10),
            (1100, 20),
            (1200, 20),
            (1400, 20),
            (2000, 10),
            (3000, 10),
            (4000, 10)
        ]
    );

    // Notch Hal Chamberlin SVF @ 1000Hz RES=0.5
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 7, 1000.0, 0.5);
    assert_eq!(
        avg_fft_freqs(
            10.0,
            &[500, 700, 850, 900, 950, 1000, 1100, 1200, 1400, 2000, 3000, 4000, 12000],
            &fft[..]
        ),
        vec![
            (0, 10),
            (500, 10),
            (700, 10),
            (850, 10),
            (900, 0),
            (950, 0),
            (1000, 0),
            (1100, 0),
            (1200, 10),
            (1400, 10),
            (2000, 10),
            (3000, 10),
            (4000, 10)
        ]
    );

    // Notch Hal Chamberlin SVF @ 1000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 7, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(
            10.0,
            &[500, 700, 850, 900, 950, 1000, 1100, 1200, 1400, 2000, 3000, 4000, 12000],
            &fft[..]
        ),
        vec![
            (0, 10),
            (500, 10),
            (700, 0),
            (850, 0),
            (900, 0),
            (950, 0),
            (1000, 0),
            (1100, 0),
            (1200, 0),
            (1400, 10),
            (2000, 10),
            (3000, 10),
            (4000, 10)
        ]
    );

    // Notch Hal Chamberlin SVF @ 4000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 7, 4000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(
            10.0,
            &[100, 500, 1000, 2000, 3500, 4000, 4500, 5000, 6000, 8000, 12000],
            &fft[..]
        ),
        vec![
            (0, 20),
            (100, 10),
            (500, 10),
            (1000, 10),
            (2000, 10),
            (3500, 10),
            (4000, 20),
            (4500, 10),
            (5000, 10),
            (6000, 20),
            (8000, 10)
        ]
    );

    // Notch Hal Chamberlin SVF @ 4000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 7, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 20),
            (100, 10),
            (500, 10),
            (1000, 10),
            (2000, 10),
            (3500, 0),
            (4000, 0),
            (5000, 0),
            (6000, 10),
            (8000, 10)
        ]
    );

    // Notch Hal Chamberlin SVF @ 22050Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 7, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 16), (100, 16), (1000, 16), (4000, 16), (12000, 16), (16000, 16), (20000, 16)]
    );

    // Notch Hal Chamberlin SVF @ 22050Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 7, 22050.0, 1.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 8), (100, 16), (1000, 16), (4000, 16), (12000, 16), (16000, 16), (20000, 16)]
    );

    // Notch Hal Chamberlin SVF @ 0Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 7, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 68), (10, 12), (100, 20), (1000, 16), (4000, 16), (12000, 16)]
    );

    // Notch Hal Chamberlin SVF @ 0Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 7, 0.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 20), (10, 32), (100, 16), (1000, 20), (4000, 16), (12000, 20)]
    );
}

#[test]
fn check_node_sfilter_simpersvf_lowpass() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // Low Pass Simper SVF @ 1000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 8, 1000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 20),
            (500, 20),
            (700, 50),
            (900, 240),
            (1000, 60),
            (1500, 10),
            (2000, 0),
            (3000, 0),
            (4000, 0)
        ]
    );

    // Low Pass Simper SVF @ 1000Hz RES=0.5
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 8, 1000.0, 0.5);
    assert_eq!(
        avg_fft_freqs(10.0, &[500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 10),
            (500, 10),
            (700, 20),
            (900, 20),
            (1000, 10),
            (1500, 0),
            (2000, 0),
            (3000, 0),
            (4000, 0)
        ]
    );

    // Low Pass Simper SVF @ 1000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 8, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 10),
            (500, 10),
            (700, 10),
            (900, 0),
            (1000, 0),
            (1500, 0),
            (2000, 0),
            (3000, 0),
            (4000, 0)
        ]
    );

    // Low Pass Simper SVF @ 4000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 8, 4000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 24),
            (100, 16),
            (500, 20),
            (1000, 20),
            (2000, 36),
            (3500, 332),
            (4000, 164),
            (5000, 20),
            (6000, 8),
            (8000, 0)
        ]
    );

    // Low Pass Simper SVF @ 4000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 8, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 20),
            (100, 12),
            (500, 16),
            (1000, 16),
            (2000, 12),
            (3500, 8),
            (4000, 8),
            (5000, 4),
            (6000, 4),
            (8000, 0)
        ]
    );

    // Low Pass Simper SVF @ 22050Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 8, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050, 22051], &fft[..]),
        vec![
            (0, 16),
            (100, 16),
            (1000, 16),
            (4000, 16),
            (12000, 16),
            (16000, 16),
            (20000, 16),
            (22050, 0)
        ]
    );

    // Low Pass Simper SVF @ 22050Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 8, 22050.0, 1.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050, 22051], &fft[..]),
        vec![
            (0, 8),
            (100, 16),
            (1000, 16),
            (4000, 16),
            (12000, 16),
            (16000, 16),
            (20000, 16),
            (22050, 0)
        ]
    );

    // Low Pass Simper SVF @ 0Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 8, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050, 22051], &fft[..]),
        vec![(0, 0), (10, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0), (22050, 0)]
    );

    // Low Pass Simper SVF @ 0Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 8, 0.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[1, 5, 10, 100, 1000, 4000, 12000, 22050, 22051], &fft[..]),
        vec![
            (0, 68),
            (1, 0),
            (5, 0),
            (10, 4),
            (100, 0),
            (1000, 0),
            (4000, 0),
            (12000, 0),
            (22050, 0)
        ]
    );
}

#[test]
fn check_node_sfilter_simpersvf_highpass() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // High Pass Simper SVF @ 1000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 9, 1000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 0),
            (500, 0),
            (700, 30),
            (900, 220),
            (1000, 80),
            (1500, 30),
            (2000, 20),
            (3000, 20),
            (4000, 10)
        ]
    );

    // High Pass Simper SVF @ 1000Hz RES=0.5
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 9, 1000.0, 0.5);
    assert_eq!(
        avg_fft_freqs(10.0, &[500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 0),
            (500, 0),
            (700, 10),
            (900, 10),
            (1000, 20),
            (1500, 20),
            (2000, 20),
            (3000, 10),
            (4000, 10)
        ]
    );

    // High Pass Simper SVF @ 1000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 9, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 0),
            (500, 0),
            (700, 0),
            (900, 0),
            (1000, 10),
            (1500, 10),
            (2000, 10),
            (3000, 10),
            (4000, 10)
        ]
    );

    // High Pass Simper SVF @ 4000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 9, 4000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 0),
            (100, 0),
            (500, 0),
            (1000, 0),
            (2000, 20),
            (3500, 312),
            (4000, 184),
            (5000, 40),
            (6000, 28),
            (8000, 20)
        ]
    );

    // High Pass Simper SVF @ 4000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 9, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 0),
            (100, 0),
            (500, 0),
            (1000, 0),
            (2000, 4),
            (3500, 8),
            (4000, 8),
            (5000, 8),
            (6000, 12),
            (8000, 16)
        ]
    );

    // High Pass Simper SVF @ 22050Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 9, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0), (16000, 0), (20000, 0)]
    );

    // High Pass Simper SVF @ 22050Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 9, 22050.0, 1.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0), (16000, 0), (20000, 0)]
    );

    // High Pass Simper SVF @ 0Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 9, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 32), (10, 12), (100, 20), (1000, 16), (4000, 16), (12000, 16)]
    );

    // High Pass Simper SVF @ 0Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 9, 0.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 92), (10, 36), (100, 16), (1000, 20), (4000, 16), (12000, 20)]
    );
}

#[test]
fn check_node_sfilter_simpersvf_bandpass() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // Band Pass Simper SVF @ 1000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 10, 1000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[250, 500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 0),
            (250, 0),
            (500, 10),
            (700, 40),
            (900, 230),
            (1000, 70),
            (1500, 10),
            (2000, 0),
            (3000, 0),
            (4000, 0)
        ]
    );

    // Band Pass Simper SVF @ 1000Hz RES=0.5
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 10, 1000.0, 0.5);
    assert_eq!(
        avg_fft_freqs(10.0, &[250, 500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 0),
            (250, 0),
            (500, 10),
            (700, 10),
            (900, 10),
            (1000, 10),
            (1500, 10),
            (2000, 0),
            (3000, 0),
            (4000, 0)
        ]
    );

    // Band Pass Simper SVF @ 1000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 10, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[250, 500, 700, 900, 1000, 1500, 2000, 3000, 4000, 12000], &fft[..]),
        vec![
            (0, 0),
            (250, 0),
            (500, 8),
            (700, 8),
            (900, 8),
            (1000, 8),
            (1500, 4),
            (2000, 4),
            (3000, 4),
            (4000, 0)
        ]
    );

    // Band Pass Simper SVF @ 4000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 10, 4000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 0),
            (100, 0),
            (500, 0),
            (1000, 0),
            (2000, 20),
            (3500, 320),
            (4000, 170),
            (5000, 20),
            (6000, 10),
            (8000, 0)
        ]
    );

    // Band Pass Simper SVF @ 4000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 10, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 0),
            (100, 0),
            (500, 0),
            (1000, 0),
            (2000, 0),
            (3500, 10),
            (4000, 0),
            (5000, 0),
            (6000, 0),
            (8000, 0)
        ]
    );

    // Band Pass Simper SVF @ 22050Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 10, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0), (16000, 0), (20000, 0)]
    );

    // Band Pass Simper SVF @ 22050Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 10, 22050.0, 1.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0), (16000, 0), (20000, 0)]
    );

    // Band Pass Simper SVF @ 0Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 10, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 4), (10, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0)]
    );

    // Band Pass Simper SVF @ 0Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 10, 0.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 12), (10, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0)]
    );
}

#[test]
fn check_node_sfilter_simpersvf_notch() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // Notch Simper SVF @ 1000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 11, 1000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(
            10.0,
            &[500, 700, 850, 900, 950, 1000, 1100, 1200, 1400, 2000, 3000, 4000, 12000],
            &fft[..]
        ),
        vec![
            (0, 10),
            (500, 10),
            (700, 10),
            (850, 10),
            (900, 20),
            (950, 10),
            (1000, 10),
            (1100, 20),
            (1200, 20),
            (1400, 20),
            (2000, 10),
            (3000, 10),
            (4000, 10)
        ]
    );

    // Notch Simper SVF @ 1000Hz RES=0.5
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 11, 1000.0, 0.5);
    assert_eq!(
        avg_fft_freqs(
            10.0,
            &[500, 700, 850, 900, 950, 1000, 1100, 1200, 1400, 2000, 3000, 4000, 12000],
            &fft[..]
        ),
        vec![
            (0, 10),
            (500, 10),
            (700, 0),
            (850, 0),
            (900, 0),
            (950, 0),
            (1000, 0),
            (1100, 0),
            (1200, 0),
            (1400, 10),
            (2000, 10),
            (3000, 10),
            (4000, 10)
        ]
    );

    // Notch Simper SVF @ 1000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 11, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(
            10.0,
            &[500, 700, 850, 900, 950, 1000, 1100, 1200, 1400, 2000, 3000, 4000, 12000],
            &fft[..]
        ),
        vec![
            (0, 10),
            (500, 0),
            (700, 0),
            (850, 0),
            (900, 0),
            (950, 0),
            (1000, 0),
            (1100, 0),
            (1200, 0),
            (1400, 0),
            (2000, 10),
            (3000, 10),
            (4000, 10)
        ]
    );

    // Notch Simper SVF @ 4000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 11, 4000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(
            10.0,
            &[100, 500, 1000, 2000, 3500, 4000, 4500, 5000, 6000, 8000, 12000],
            &fft[..]
        ),
        vec![
            (0, 20),
            (100, 10),
            (500, 10),
            (1000, 10),
            (2000, 10),
            (3500, 10),
            (4000, 20),
            (4500, 10),
            (5000, 10),
            (6000, 20),
            (8000, 10)
        ]
    );

    // Notch Simper SVF @ 4000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 11, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 20),
            (100, 10),
            (500, 10),
            (1000, 10),
            (2000, 0),
            (3500, 0),
            (4000, 0),
            (5000, 0),
            (6000, 10),
            (8000, 10)
        ]
    );

    // Notch Simper SVF @ 22050Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 11, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 16), (100, 16), (1000, 16), (4000, 16), (12000, 16), (16000, 16), (20000, 16)]
    );

    // Notch Simper SVF @ 22050Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 11, 22050.0, 1.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 8), (100, 16), (1000, 16), (4000, 16), (12000, 16), (16000, 16), (20000, 16)]
    );

    // Notch Simper SVF @ 0Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 11, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 32), (10, 12), (100, 20), (1000, 16), (4000, 16), (12000, 16)]
    );

    // Notch Simper SVF @ 0Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 11, 0.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 20), (10, 32), (100, 16), (1000, 20), (4000, 16), (12000, 20)]
    );
}

#[test]
fn check_node_sfilter_simpersvf_peak() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // Peak Simper SVF @ 1000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 12, 1000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(
            10.0,
            &[500, 700, 850, 900, 950, 1000, 1100, 1200, 1400, 2000, 3000, 4000, 12000],
            &fft[..]
        ),
        vec![
            (0, 20),
            (500, 30),
            (700, 70),
            (850, 120),
            (900, 340),
            (950, 620),
            (1000, 320),
            (1100, 170),
            (1200, 80),
            (1400, 40),
            (2000, 20),
            (3000, 20),
            (4000, 10)
        ]
    );

    // Peak Simper SVF @ 1000Hz RES=0.5
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 12, 1000.0, 0.5);
    assert_eq!(
        avg_fft_freqs(
            10.0,
            &[500, 700, 850, 900, 950, 1000, 1100, 1200, 1400, 2000, 3000, 4000, 12000],
            &fft[..]
        ),
        vec![
            (0, 20),
            (500, 20),
            (700, 30),
            (850, 40),
            (900, 30),
            (950, 40),
            (1000, 40),
            (1100, 40),
            (1200, 20),
            (1400, 20),
            (2000, 20),
            (3000, 20),
            (4000, 20)
        ]
    );

    // Peak Simper SVF @ 1000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 12, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(
            10.0,
            &[500, 700, 850, 900, 950, 1000, 1100, 1200, 1400, 2000, 3000, 4000, 12000],
            &fft[..]
        ),
        vec![
            (0, 10),
            (500, 10),
            (700, 10),
            (850, 10),
            (900, 10),
            (950, 10),
            (1000, 20),
            (1100, 10),
            (1200, 10),
            (1400, 10),
            (2000, 10),
            (3000, 20),
            (4000, 10)
        ]
    );

    // Peak Simper SVF @ 4000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 12, 4000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(
            10.0,
            &[100, 500, 1000, 2000, 3500, 4000, 4500, 5000, 6000, 8000, 12000],
            &fft[..]
        ),
        vec![
            (0, 20),
            (100, 10),
            (500, 20),
            (1000, 20),
            (2000, 50),
            (3500, 640),
            (4000, 630),
            (4500, 80),
            (5000, 60),
            (6000, 30),
            (8000, 20)
        ]
    );

    // Peak Simper SVF @ 4000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 12, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(10.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 20),
            (100, 10),
            (500, 10),
            (1000, 10),
            (2000, 10),
            (3500, 20),
            (4000, 20),
            (5000, 10),
            (6000, 10),
            (8000, 20)
        ]
    );

    // Peak Simper SVF @ 22050Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 12, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 16), (100, 16), (1000, 16), (4000, 16), (12000, 16), (16000, 16), (20000, 16)]
    );

    // Peak Simper SVF @ 22050Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 12, 22050.0, 1.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050], &fft[..]),
        vec![(0, 8), (100, 16), (1000, 16), (4000, 16), (12000, 16), (16000, 16), (20000, 24)]
    );

    // Peak Simper SVF @ 0Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 12, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 28), (10, 12), (100, 20), (1000, 16), (4000, 16), (12000, 16)]
    );

    // Peak Simper SVF @ 0Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 12, 0.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050], &fft[..]),
        vec![(0, 164), (10, 40), (100, 16), (1000, 20), (4000, 16), (12000, 20)]
    );
}

#[test]
fn check_node_sfilter_moog_lowpass() {
    let (mut matrix, mut node_exec) = setup_sfilter_matrix();

    // Low Pass Stilson/Moog @ 1000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 13, 1000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(
            4.0,
            &[100, 200, 400, 500, 700, 900, 1000, 1100, 1200, 1500, 2000, 3000, 4000, 6000, 12000],
            &fft[..]
        ),
        vec![
            (0, 0),
            (100, 4),
            (200, 4),
            (400, 0),
            (500, 4),
            (700, 4),
            (900, 12),
            (1000, 148),
            (1100, 64),
            (1200, 4),
            (1500, 0),
            (2000, 0),
            (3000, 0),
            (4000, 0),
            (6000, 0)
        ]
    );

    // Low Pass Stilson/Moog @ 1000Hz RES=0.5
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 13, 1000.0, 0.5);
    assert_eq!(
        avg_fft_freqs(
            4.0,
            &[100, 200, 400, 500, 700, 900, 1000, 1100, 1200, 1500, 2000, 3000, 4000, 6000, 12000],
            &fft[..]
        ),
        vec![
            (0, 4),
            (100, 4),
            (200, 8),
            (400, 8),
            (500, 8),
            (700, 24),
            (900, 48),
            (1000, 28),
            (1100, 16),
            (1200, 4),
            (1500, 0),
            (2000, 0),
            (3000, 0),
            (4000, 0),
            (6000, 0)
        ]
    );

    // Low Pass Stilson/Moog @ 1000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 13, 1000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(
            4.0,
            &[100, 200, 400, 500, 700, 900, 1000, 1100, 1200, 1500, 2000, 3000, 4000, 6000, 12000],
            &fft[..]
        ),
        vec![
            (0, 28),
            (100, 24),
            (200, 24),
            (400, 8),
            (500, 16),
            (700, 8),
            (900, 8),
            (1000, 4),
            (1100, 4),
            (1200, 4),
            (1500, 0),
            (2000, 0),
            (3000, 0),
            (4000, 0),
            (6000, 0)
        ]
    );

    // Low Pass Stilson/Moog @ 4000Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 13, 4000.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 4),
            (100, 0),
            (500, 4),
            (1000, 4),
            (2000, 4),
            (3500, 28),
            (4000, 60),
            (5000, 4),
            (6000, 0),
            (8000, 0)
        ]
    );

    // Low Pass Stilson/Moog @ 4000Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 13, 4000.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[100, 500, 1000, 2000, 3500, 4000, 5000, 6000, 8000, 12000], &fft[..]),
        vec![
            (0, 28),
            (100, 16),
            (500, 20),
            (1000, 20),
            (2000, 12),
            (3500, 8),
            (4000, 8),
            (5000, 4),
            (6000, 0),
            (8000, 0)
        ]
    );

    // Low Pass Stilson/Moog @ 22050Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 13, 22050.0, 0.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050, 22051], &fft[..]),
        vec![
            (0, 16),
            (100, 16),
            (1000, 16),
            (4000, 16),
            (12000, 8),
            (16000, 16),
            (20000, 8),
            (22050, 0)
        ]
    );

    // Low Pass Stilson/Moog @ 22050Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 13, 22050.0, 1.0);
    assert_eq!(
        avg_fft_freqs(8.0, &[100, 1000, 4000, 12000, 16000, 20000, 22050, 22051], &fft[..]),
        vec![
            (0, 0),
            (100, 0),
            (1000, 0),
            (4000, 0),
            (12000, 0),
            (16000, 0),
            (20000, 0),
            (22050, 0)
        ]
    );

    // Low Pass Stilson/Moog @ 0Hz RES=0.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 13, 0.0, 0.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[10, 100, 1000, 4000, 12000, 22050, 22051], &fft[..]),
        vec![(0, 0), (10, 0), (100, 0), (1000, 0), (4000, 0), (12000, 0), (22050, 0)]
    );

    // Low Pass Stilson/Moog @ 0Hz RES=1.0
    let fft = fft_with_freq_res_type(&mut matrix, &mut node_exec, 13, 0.0, 1.0);
    assert_eq!(
        avg_fft_freqs(4.0, &[1, 5, 10, 100, 1000, 4000, 12000, 22050, 22051], &fft[..]),
        vec![
            (0, 0),
            (1, 0),
            (5, 0),
            (10, 0),
            (100, 0),
            (1000, 0),
            (4000, 0),
            (12000, 0),
            (22050, 0)
        ]
    );
}