文件列表:

CHANGELOG.md (0, 2023-09-08)
LICENSE (11357, 2023-09-08)
app/ (0, 2023-09-08)
app/Player.hs (9082, 2023-09-08)
bin/ (0, 2023-09-08)
bin/run-tests (516, 2023-09-08)
bin/weeder.dhall (115, 2023-09-08)
flake.lock (1109, 2023-09-08)
flake.nix (1486, 2023-09-08)
simple-dsp.cabal (1628, 2023-09-08)
src/ (0, 2023-09-08)
src/SimpleDSP/ (0, 2023-09-08)
src/SimpleDSP/GUI.hs (4312, 2023-09-08)
src/SimpleDSP/IIR.hs (2935, 2023-09-08)
src/SimpleDSP/IO.hs (1250, 2023-09-08)
src/SimpleDSP/Samples.hs (346, 2023-09-08)
test/ (0, 2023-09-08)
test/Spec.hs (55, 2023-09-08)

# 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](https://github.com/TristanCacqueray/simple-dsp/blob/master/./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 ```  ## 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/22c5bd85d8478e24874ff2b80875506f5c3711a6 --impure github:guibou/nixGL ``` Then run: ```ShellSession nixGL cabal run exe:simple-dsp-player -- $SOUND_FILE_PATH ```

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