noise-waves

configs/packages.nix

@@ -130,6 +130,7 @@ in {
     espeak
     rink # unit converter
     niveumPackages.auc
+    niveumPackages.noise-waves
     niveumPackages.cheat-sh
     niveumPackages.polyglot
     niveumPackages.qrpaste

flake.nix

@@ -374,6 +374,7 @@
         manual-sort = pkgs.callPackage packages/manual-sort.nix {};
         menu-calc = pkgs.callPackage packages/menu-calc.nix {};
         meteo = pkgs.callPackage packages/meteo.nix {};
+        noise-waves = pkgs.callPackage packages/noise-waves.nix {};
         mpv-radio = pkgs.callPackage packages/mpv-radio.nix {di-fm-key-file = "/dev/null";};
         mpv-tuner = pkgs.callPackage packages/mpv-tuner.nix {di-fm-key-file = "/dev/null";};
         mpv-tv = pkgs.callPackage packages/mpv-tv.nix {};

packages/noise-waves.nix

@@ -0,0 +1,14 @@
+{ sox, mpv, writers, coreutils }:
+# ref https://askubuntu.com/a/789472
+writers.writeDashBin "noise-waves" ''
+  file="/tmp/noise.wav"
+  trap clean EXIT
+  clean() {
+    rm "$file"
+  }
+
+  ${coreutils}/bin/mkfifo "$file"
+
+  ${sox}/bin/sox -n "$file" synth brownnoise synth pinknoise mix synth sine amod 0.3 10 &
+  ${mpv}/bin/mpv "$file"
+''