https://github.com/tristancacqueray/simple-dsp

A simple digital signal processor
https://github.com/tristancacqueray/simple-dsp

Last synced: 14 days ago
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A simple digital signal processor

• Host: GitHub
• URL: https://github.com/tristancacqueray/simple-dsp
• Owner: TristanCacqueray
• License: apache-2.0
• Created: 2023-07-03T14:24:48.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2024-06-05T13:27:46.000Z (5 months ago)
• Last Synced: 2024-10-11T01:48:05.333Z (27 days ago)
• Language: Haskell
• Size: 68.4 KB
• Stars: 5
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# simple-dsp

This library provides DSP primitives along with a simple audio player.

## Overview and scope

The goal of simple-dsp is to implement IIR filters for sound processing, for example, to remove the low frequencies from an input sound.

Learning resources:

- https://ocw.mit.edu/courses/6-003-signals-and-systems-fall-2011/ (complete)

- https://dspguru.com/dsp/howtos/implement-iir-filters/ (presentation)

- https://en.wikipedia.org/wiki/Digital_biquad_filter (reference)

## Usage

Use the [SimpleDSP.IIR](./src/SimpleDSP/IIR.hs) in your application.

Start the audio player by passing a sound file:

```ShellSession

cabal run -O0 exe:simple-dsp-player -- ~/86quantoc.flac

```

![simple-dsp](https://github.com/TristanCacqueray/simple-dsp/assets/154392/57207ef1-6efe-4b64-9574-d118d1d61471)

## SDL_GL_CreateContext error and nix

If the program fails with:

```ShellSession

simple-dsp-player: SDLCallFailed {sdlExceptionCaller = "SDL.Video.glCreateContext", sdlFunction = "SDL_GL_CreateContext", sdlExceptionError = "Invalid window"}

```

You need to use `nixGL`. To install the right version (see hspkgs input to match the nixpkgs pin):

```ShellSession

nix profile install --override-input nixpkgs github:NixOS/nixpkgs/b79cc961fe98b158ea051ae3c71616872ffe8212 --impure github:guibou/nixGL

```

Then run:

```ShellSession

nixGL cabal run exe:simple-dsp-player -- $SOUND_FILE_PATH

```