Aych-Delay

Aych-Delay is a delay effect modelled after the H-Delay by Waves. It applies a delay effect to audio data and includes features such as feedback, ping-pong, width control, and lowpass/highpass filtering.

Disclaimer

This project came about as a way for me to scratch an itch. I've been wanting to write audio software with Rust for a while, and recreating the H-Delay seemed like a fun challenge. I'm NOT a DSP expert, and I'm sure there are many ways in which this code could be improved. If you have any suggestions, feel free to open an issue or submit a pull request.

Installation

To use Aych-Delay in your Rust project, add the following to your Cargo.toml file:

[dependencies]
aych_delay = "0.1.1"

Usage

To use Aych-Delay, create a new instance of the Delay struct with the desired settings and call the process method on your audio data:

use aych_delay::{Delay, Settings};

let mut delay = Delay::new(Settings {
    delay_time: 166.66,
    feedback: 0.75,
    width: 0.5,
    lowpass_filter: 22000.0,
    highpass_filter: 300.0,
    dry_wet_mix: 0.5,
    output_level: 0.75,
    ..Settings::default()
});

let mut delay = Delay::new(settings);

let input: &[f32] = &[...];
let mut output: &mut [f32] = &mut [...];

delay.process(input, output);

You can also use the default() method of the Settings struct to get a set of default values:

let settings = Settings::default();
let mut delay = Delay::new(settings);

Examples

The examples directory contains a basic example of using Aych-Delay with the rodio library to play a sound file with the plugin applied. To run the example, use the following command:

cargo run --example basic <audio_file>

Filters

Aych-Delay includes lowpass and highpass filters implemented with the TPTOnePoleStereo struct. This is a "Topology preserving transform" one-pole filter, derived from work by Zavalishin and Pirkle, and an implementation of the filter within the SOUL project (ISC license).

License

Aych-Delay is licensed under the MIT license. See the LICENSE file for more information.