nix-conf/nixos-modules/audio/default.nix

{
  config,
  lib,
  pkgs,
  ...
}:

let
  cfg = config.jopejoe1.audio;
in
{
  options.jopejoe1.audio = {
    enable = lib.mkEnableOption "Enable Audio";
    sennheiser-hd-660s = lib.mkEnableOption "Equalizer for Sennheiser HD 660S";
  };

  config = lib.mkIf cfg.enable {
    security.rtkit.enable = true;

    services.pipewire = {
      enable = true;
      systemWide = false;
      alsa = {
        enable = true;
        support32Bit = true;
      };
      pulse.enable = true;
      jack.enable = true;

      wireplumber.enable = true;

      extraConfig.pipewire."30-noise-filter" = {
        "context.modules" = [
          {
            name = "libpipewire-module-filter-chain";
            args = {
              "node.description" = "Noise Canceling source";
              "media.name" = "Noise Canceling source";
              "filter.graph" = {
                nodes = [
                  {
                    type = "ladspa";
                    name = "rnnoise";
                    plugin = "${pkgs.rnnoise-plugin}/lib/ladspa/librnnoise_ladspa.so";
                    label = "noise_suppressor_mono";
                    control = {
                      "VAD Threshold (%)" = 50.0;
                      #"VAD Grace Period (ms)" = 0;
                      "Retroactive VAD Grace (ms)" = 50;
                    };
                  }
                ];
              };
              "capture.props" = {
                "node.name" = "capture.rnnoise_source";
                "node.passive" = true;
                "audio.rate" = 48000;
              };
              "playback.props" = {
                "node.name" = "rnnoise_source";
                "media.class" = "Audio/Source";
                "audio.rate" = 48000;
              };
            };
          }
        ];
      };
    };
  };

  imports = [ ./sennheiser-hd660s.nix ];
}