rill-lofi 0.5.0

Lo-fi audio emulation: 8-bit, 12-bit, NES, AY-3-8910, Akai S900
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27

//! Vintage effects

use std::f32::consts::PI;

/// Tape saturation emulation
pub fn tape_saturation(sample: f32, drive: f32) -> f32 {
    let driven = sample * drive;
    // Soft clipping like tape
    (driven / (1.0 + driven.abs())).clamp(-1.0, 1.0)
}

/// Vinyl noise and crackle emulation
pub fn vinyl_noise(sample: f32, _time: f32, _sample_rate: f32) -> f32 {
    let noise_level = 0.02;
    let crackle_prob = 0.001;

    let noise = crate::dsp::noise::white_noise(noise_level);
    let crackle = crate::dsp::noise::crackle(crackle_prob, 0.1);

    sample + noise + crackle
}

/// Wow and flutter emulation (speed instability)
pub fn wow_flutter(sample: f32, time: f32, depth: f32, rate: f32) -> f32 {
    let modulation = (2.0 * PI * rate * time).sin() * depth;
    sample * (1.0 + modulation)
}