mirror of
https://github.com/NixOS/nixos-hardware
synced 2024-11-23 11:29:42 +01:00
382 lines
11 KiB
Nix
382 lines
11 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.hardware.framework.laptop13.audioEnhancement;
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in
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{
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options = {
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hardware.framework.laptop13.audioEnhancement = {
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enable = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Create a new audio device called "Framework Speakers",
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which applies sound tuning before sending the audio out to the speakers.
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This option requires PipeWire and WirePlumber.
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The filter chain includes the following:
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- Pyschoacoustic bass enhancement
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- Loudness compensation
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- Equalizer
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- Slight compression
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This option has been optimised for the Framework Laptop 13 AMD 7040 series, but should work on all models.
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Before applying, ensure the speakers are set to 100%,
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because the volumes compound and the raw speaker device will be hidden by default.
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You might also need to re-select the default output device.
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In some cases, the added bass will vibrate the keyboard cable leading to a rattling sound,
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a piece of foam can be used to mitigate this.
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'';
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};
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hideRawDevice = lib.mkOption {
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type = lib.types.bool;
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default = true;
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description = ''
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Hide the raw speaker device.
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This option is enabled by default, because keeping the raw speaker device can lead to volume conflicts.
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'';
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};
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rawDeviceName = lib.mkOption {
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type = lib.types.str;
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example = "alsa_output.pci-0000_c1_00.6.analog-stereo";
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description = ''
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The name of the raw speaker device. This will vary by device.
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You can get this by running `pw-dump | grep -C 20 pci-0000`.
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'';
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};
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};
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};
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config = lib.mkIf cfg.enable (let
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outputName = cfg.rawDeviceName;
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prettyName = "Framework Speakers";
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# These are pre-made decibel to linear value conversions, since Nix doesn't have pow().
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# Use the formula `10 ** (db / 20)` to calculate.
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db = {
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"-18.1" = 0.1244514611771385;
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"-5.48" = 0.5321082592667942;
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"-4.76" = 0.5780960474057181;
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"8.1" = 2.5409727055493048;
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"-36" = 1.5848931924611134e-2;
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};
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json = pkgs.formats.json { };
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# The filter chain, heavily inspired by the asahi-audio project: https://github.com/AsahiLinux/asahi-audio
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filter-chain = json.generate "filter-chain.json" {
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"node.description" = prettyName;
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"media.name" = prettyName;
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"filter.graph" = {
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nodes = [
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# Psychoacoustic bass extension,
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# it creates harmonics of the missing bass to fool our ears into hearing it.
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{
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type = "lv2";
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plugin = "https://chadmed.au/bankstown";
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name = "bassex";
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control = {
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bypass = 0;
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amt = 1.2;
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sat_second = 1.3;
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sat_third = 2.5;
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blend = 1.0;
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ceil = 200.0;
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floor = 20.0;
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};
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}
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# Loudness compensation,
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# it ensures that the sound profile stays consistent across different volumes.
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{
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type = "lv2";
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plugin = "http://lsp-plug.in/plugins/lv2/loud_comp_stereo";
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name = "el";
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control = {
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enabled = 1;
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input = 1.0;
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fft = 4;
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};
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}
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# 8-band equalizer,
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# it tries to lessen frequencies where the laptop might resonate,
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# and tries to make the frequency curve more pleasing;
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# this is the "Lappy McTopface" profile (https://github.com/ceiphr/ee-framework-presets)
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# further tuned for the Framework Laptop 13 AMD 7040 series
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# and might need some tuning on other models.
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{
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type = "lv2";
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plugin = "http://lsp-plug.in/plugins/lv2/para_equalizer_x8_lr";
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name = "fw13eq";
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control = {
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mode = 0;
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react = 0.2;
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zoom = db."-36";
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fl_0 = 101.0;
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fml_0 = 0;
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ftl_0 = 5;
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gl_0 = db."-18.1";
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huel_0 = 0.0;
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ql_0 = 4.36;
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sl_0 = 0;
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wl_0 = 4.0;
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fl_1 = 451.0;
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fml_1 = 0;
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ftl_1 = 1;
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gl_1 = db."-5.48";
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huel_1 = 3.125e-2;
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ql_1 = 2.46;
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sl_1 = 0;
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wl_1 = 4.0;
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fl_2 = 918.0;
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fml_2 = 0;
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ftl_2 = 1;
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gl_2 = db."-4.76";
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huel_2 = 6.25e-2;
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ql_2 = 2.44;
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sl_2 = 0;
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wl_2 = 4.0;
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fl_3 = 9700.0;
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fml_3 = 0;
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ftl_3 = 1;
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gl_3 = db."8.1";
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huel_3 = 9.375e-2;
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ql_3 = 2.0;
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sl_3 = 0;
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wl_3 = 4.0;
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fr_0 = 101.0;
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fmr_0 = 0;
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ftr_0 = 5;
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gr_0 = db."-18.1";
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huer_0 = 0.0;
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qr_0 = 4.36;
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sr_0 = 0;
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wr_0 = 4.0;
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fr_1 = 451.0;
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fmr_1 = 0;
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ftr_1 = 1;
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gr_1 = db."-5.48";
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huer_1 = 3.125e-2;
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qr_1 = 2.46;
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sr_1 = 0;
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wr_1 = 4.0;
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fr_2 = 918.0;
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fmr_2 = 0;
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ftr_2 = 1;
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gr_2 = db."-4.76";
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huer_2 = 6.25e-2;
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qr_2 = 2.44;
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sr_2 = 0;
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wr_2 = 4.0;
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fr_3 = 9700.0;
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fmr_3 = 0;
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ftr_3 = 1;
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gr_3 = db."8.1";
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huer_3 = 9.375e-2;
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qr_3 = 2.0;
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sr_3 = 0;
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wr_3 = 4.0;
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};
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}
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# Compressors. The settings were taken from the asahi-audio project.
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{
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type = "lv2";
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plugin = "http://lsp-plug.in/plugins/lv2/mb_compressor_stereo";
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name = "woofer_bp";
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control = {
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mode = 0;
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ce_0 = 1;
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sla_0 = 5.0;
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cr_0 = 1.75;
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al_0 = 0.725;
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at_0 = 1.0;
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rt_0 = 100;
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kn_0 = 0.125;
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cbe_1 = 1;
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sf_1 = 200.0;
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ce_1 = 0;
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cbe_2 = 0;
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ce_2 = 0;
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cbe_3 = 0;
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ce_3 = 0;
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cbe_4 = 0;
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ce_4 = 0;
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cbe_5 = 0;
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ce_5 = 0;
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cbe_6 = 0;
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ce_6 = 0;
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};
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}
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{
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type = "lv2";
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plugin = "http://lsp-plug.in/plugins/lv2/compressor_stereo";
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name = "woofer_lim";
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control = {
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sla = 5.0;
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al = 1.0;
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at = 1.0;
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rt = 100.0;
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cr = 15.0;
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kn = 0.5;
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};
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}
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];
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# Now, we're chaining together the modules instantiated above.
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links = [
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{
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output = "bassex:out_l";
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input = "el:in_l";
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}
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{
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output = "bassex:out_r";
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input = "el:in_r";
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}
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{
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output = "el:out_l";
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input = "fw13eq:in_l";
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}
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{
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output = "el:out_r";
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input = "fw13eq:in_r";
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}
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{
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output = "fw13eq:out_l";
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input = "woofer_bp:in_l";
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}
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{
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output = "fw13eq:out_r";
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input = "woofer_bp:in_r";
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}
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{
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output = "woofer_bp:out_l";
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input = "woofer_lim:in_l";
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}
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{
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output = "woofer_bp:out_r";
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input = "woofer_lim:in_r";
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}
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];
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inputs = [
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"bassex:in_l"
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"bassex:in_r"
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];
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outputs = [
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"woofer_lim:out_l"
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"woofer_lim:out_r"
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];
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# This makes pipewire's volume control actually control the loudness comp module
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"capture.volumes" = [
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{
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control = "el:volume";
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min = -47.5;
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max = 0.0;
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scale = "cubic";
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}
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];
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};
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"capture.props" = {
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"node.name" = "audio_effect.laptop-convolver";
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"media.class" = "Audio/Sink";
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"audio.channels" = "2";
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"audio.position" = [
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"FL"
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"FR"
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];
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"audio.allowed-rates" = [
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44100
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48000
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88200
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96000
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176400
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192000
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];
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"device.api" = "dsp";
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"node.virtual" = "false";
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# Lower seems to mean "more preferred",
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# bluetooth devices seem to be ~1000, speakers seem to be ~2000
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# since this is between the two, bluetooth devices take over when they connect,
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# and hand over to this instead of the speakers when they disconnect.
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"priority.session" = 1500;
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"priority.driver" = 1500;
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"state.default-volume" = 0.343;
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"device.icon-name" = "audio-card-analog-pci";
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};
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"playback.props" = {
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"node.name" = "audio_effect.laptop-convolver";
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"target.object" = outputName;
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"node.passive" = "true";
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"audio.channels" = "2";
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"audio.allowed-rates" = [
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44100
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48000
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88200
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96000
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176400
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192000
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];
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"audio.position" = [
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"FL"
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"FR"
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];
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"device.icon-name" = "audio-card-analog-pci";
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};
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};
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configPackage =
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(pkgs.writeTextDir "share/wireplumber/wireplumber.conf.d/99-laptop.conf" ''
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monitor.alsa.rules = [
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{
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matches = [{ node.name = "${outputName}" }]
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actions = {
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update-props = {
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audio.allowed-rates = [44100, 48000, 88200, 96000, 176400, 192000]
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}
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}
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}
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]
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node.software-dsp.rules = [
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{
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matches = [{ node.name = "${outputName}" }]
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actions = {
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create-filter = {
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filter-path = "${filter-chain}"
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hide-parent = ${lib.boolToString cfg.hideRawDevice}
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}
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}
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}
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]
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wireplumber.profiles = {
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main = { node.software-dsp = "required" }
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}
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'')
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// {
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passthru.requiredLv2Packages = with pkgs; [
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lsp-plugins
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bankstown-lv2
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];
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};
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in {
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services.pipewire.wireplumber.configPackages = [ configPackage ];
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# Pipewire is needed for this.
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services.pipewire.enable = lib.mkDefault true;
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});
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}
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