Function synfx_dsp::process_stilson_moog

pub fn process_stilson_moog(
    input: f32,
    freq: f32,
    res: f32,
    israte: f32,
    b0: &mut f32,
    b1: &mut f32,
    b2: &mut f32,
    b3: &mut f32,
    delay: &mut [f32; 4]
) -> f32

This function implements a simple Stilson/Moog low pass filter with 24dB. It provides only a low pass output.

• input - Input sample.
• freq - Frequency in Hz. otherwise the filter becomes unstable.
• res - Resonance from 0.0 to 0.99. Resonance of 1.0 is not recommended, as the filter will then oscillate itself out of control.
• israte - 1.0 divided by the sampling rate (1.0 / 44100.0).
• b0 to b3 - Internal values used for filtering.
• delay - A buffer holding other delayed samples.

    use synfx_dsp::*;

    let samples  = vec![0.0; 44100];
    let mut b0   = 0.0;
    let mut b1   = 0.0;
    let mut b2   = 0.0;
    let mut b3   = 0.0;
    let mut delay = [0.0; 4];
    let mut freq = 1000.0;

    for s in samples.iter() {
        let low =
            process_stilson_moog(
                *s, freq, 0.5, 1.0 / 44100.0,
                &mut b0, &mut b1, &mut b2, &mut b3,
                &mut delay);

        // ... do something with the result here.
    }