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tvl-depot/tools/nsfv-setup/default.nix

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feat(tazjin/nsfv-setup): Add script for noise-cancelling others This script creates a pulseaudio sink that will cancel noise in audio streams sent to it, and then move it on to the default sink. This means that other people's crackling, static background, gulping, keyboard sounds, fan whirring, construction noise etc. are removed. Some preliminary tests on TVL suggest that this actually works. The parameter might need some tweaking ("50" is just the default value), as there is some occasional crackling at the beginning/end of a speech segment, but this is already *much* better than before. Change-Id: I9d4e2b39cfc2b878b4b7c5458788b8d46fb801af Reviewed-on: https://cl.tvl.fyi/c/depot/+/577 Reviewed-by: nyanotech <nyanotechnology@gmail.com>
2020-06-25 05:01:00 +02:00
# Configures a running Pulseaudio instance with an LADSP filter that
# creates a noise-cancelling sink.
#
# This can be used to, for example, cancel noise from an incoming
# video conferencing audio stream.
#
# There are some caveats, for example this will not distinguish
# between noise from different participants and I have no idea what
# happens if the default sink goes away.
feat(tools/nsfv-setup): Move NSFV setup script out of //users This program can be used for noise-cancelling in arbitrary audio streams. See CL/576 and CL/577 for more details. This moves the script out of my users folder and to //tools, and adds two changes: * Existing sinks will be removed & reinitialised * The sink is changed from stereo->mono (which seems to make little difference but is more reliable) * The parameter has changed from 50 to 42 because I felt like it Change-Id: Id9ff285fefd682ccc4d9f18e46b5fde9cd056aa7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/578 Reviewed-by: glittershark <grfn@gws.fyi>
2020-06-26 05:38:26 +02:00
#
# If this script is run while an NSFV sink exists, the existing sink
# will first be removed.
feat(tazjin/nsfv-setup): Add script for noise-cancelling others This script creates a pulseaudio sink that will cancel noise in audio streams sent to it, and then move it on to the default sink. This means that other people's crackling, static background, gulping, keyboard sounds, fan whirring, construction noise etc. are removed. Some preliminary tests on TVL suggest that this actually works. The parameter might need some tweaking ("50" is just the default value), as there is some occasional crackling at the beginning/end of a speech segment, but this is already *much* better than before. Change-Id: I9d4e2b39cfc2b878b4b7c5458788b8d46fb801af Reviewed-on: https://cl.tvl.fyi/c/depot/+/577 Reviewed-by: nyanotech <nyanotechnology@gmail.com>
2020-06-25 05:01:00 +02:00
{ pkgs, ... }:
let
inherit (pkgs) ripgrep pulseaudio nsfv;
in pkgs.writeShellScriptBin "nsfv-setup" ''
feat(tools/nsfv-setup): Move NSFV setup script out of //users This program can be used for noise-cancelling in arbitrary audio streams. See CL/576 and CL/577 for more details. This moves the script out of my users folder and to //tools, and adds two changes: * Existing sinks will be removed & reinitialised * The sink is changed from stereo->mono (which seems to make little difference but is more reliable) * The parameter has changed from 50 to 42 because I felt like it Change-Id: Id9ff285fefd682ccc4d9f18e46b5fde9cd056aa7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/578 Reviewed-by: glittershark <grfn@gws.fyi>
2020-06-26 05:38:26 +02:00
export PATH="${ripgrep}/bin:${pulseaudio}/bin:$PATH"
if pacmd list-sinks | rg librnnoise_ladspa.so >/dev/null; then
pactl unload-module module-ladspa-sink
fi
feat(tazjin/nsfv-setup): Add script for noise-cancelling others This script creates a pulseaudio sink that will cancel noise in audio streams sent to it, and then move it on to the default sink. This means that other people's crackling, static background, gulping, keyboard sounds, fan whirring, construction noise etc. are removed. Some preliminary tests on TVL suggest that this actually works. The parameter might need some tweaking ("50" is just the default value), as there is some occasional crackling at the beginning/end of a speech segment, but this is already *much* better than before. Change-Id: I9d4e2b39cfc2b878b4b7c5458788b8d46fb801af Reviewed-on: https://cl.tvl.fyi/c/depot/+/577 Reviewed-by: nyanotech <nyanotechnology@gmail.com>
2020-06-25 05:01:00 +02:00
SINK=$(${pulseaudio}/bin/pacmd info | ${ripgrep}/bin/rg -r '$1' '^Default sink name: (.*)$')
echo "Setting up NSFV filtering to sink ''${SINK}"
fix(nsfv-setup): Resample pipeline at 48kHz with pulseaudio This gives better overall results and may also prevent drift, which was an issue I've had previously. See also this upstream commit for NSFV: https://github.com/werman/noise-suppression-for-voice/commit/34003bd9ab1509708eab61ef458feaae23327495 Change-Id: I45534cb60130755949cdbfbc39aed2478a249c72 Reviewed-on: https://cl.tvl.fyi/c/depot/+/1717 Tested-by: BuildkiteCI Reviewed-by: glittershark <grfn@gws.fyi>
2020-08-12 18:50:20 +02:00
${pulseaudio}/bin/pacmd load-module module-ladspa-sink sink_name=NSFV sink_master=''${SINK} label=noise_suppressor_mono plugin=${pkgs.nsfv}/lib/ladspa/librnnoise_ladspa.so control=42 rate=48000
feat(tazjin/nsfv-setup): Add script for noise-cancelling others This script creates a pulseaudio sink that will cancel noise in audio streams sent to it, and then move it on to the default sink. This means that other people's crackling, static background, gulping, keyboard sounds, fan whirring, construction noise etc. are removed. Some preliminary tests on TVL suggest that this actually works. The parameter might need some tweaking ("50" is just the default value), as there is some occasional crackling at the beginning/end of a speech segment, but this is already *much* better than before. Change-Id: I9d4e2b39cfc2b878b4b7c5458788b8d46fb801af Reviewed-on: https://cl.tvl.fyi/c/depot/+/577 Reviewed-by: nyanotech <nyanotechnology@gmail.com>
2020-06-25 05:01:00 +02:00
''
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