nick blackandOmar Amin
7c6fbaa4ee
PipeWire no longer honors the 'method' option for the echo-cancel module. Trying to use it will generate: aec.method is not supported anymore use library.name Remove it from all pipewire examples. It could be replaced by 'library.name=aec/libspa-aec-webrtc', but as that's currently the default (and only supported option), I've elided it. Co-authored-by: Omar Amin <65174210+omaramin-2000@users.noreply.github.com>
2.2 KiB
2.2 KiB
Enabling Acoustic Echo Cancellation
Acoustic Echo Cancellation (AEC) is a type of sound processing used to cancel out the noise coming out of your speaker and going into your mic. In LVA this functionality can be useful to allow LVA to listen to wake words even when audio is playing, particularly when a timer is playing. PulseAudio and PipeWire already provide built-in modules for AEC.
Enabling AEC
PulseAudio
pactl load-module module-echo-cancel source_name=aec_mic aec_method=webrtc
To make permanent, add to /etc/pulse/default.pa:
load-module module-echo-cancel source_name=aec_mic aec_method=webrtc
PipeWire
pw-cli load-module libpipewire-module-echo-cancel '{ source.props={ node.name=aec_mic } }'
To make permanent, add the following to the context.modules section of /etc/pipewire/pipewire.conf:
{ name = libpipewire-module-echo-cancel
args = {
source.props = { node.name = aec_mic }
}
}
Or if you are using a standard PipeWire installation without a custom pipewire.conf, create a new file inside pipewire.conf.d/:
context.modules = [
{ name = libpipewire-module-echo-cancel
args = {
source.props = { node.name = aec_mic }
}
}
]
Using the AEC Input
In the .env file:
AUDIO_INPUT_DEVICE="aec_mic"
Changing Source and Sink for AEC
PulseAudio
pactl load-module module-echo-cancel source_name=aec_mic aec_method=webrtc source_master=<mic-source> sink_master=<sink>
PipeWire
pw-cli load-module libpipewire-module-echo-cancel '{ source.props={ node.name=aec_mic node.description="Echo Cancelled Mic" } sink.props={ node.name=aec_sink } capture.props={ node.name=<your-mic-node-name> } playback.props={ node.name=<your-speaker-node-name> } }'
To make permanent, add to context.modules in /etc/pipewire/pipewire.conf or a file in pipewire.conf.d/:
{ name = libpipewire-module-echo-cancel
args = {
source.props = {
node.name = aec_mic
node.description = "Echo Cancelled Mic"
}
sink.props = {
node.name = aec_sink
}
capture.props = {
node.name = <your-mic-node-name>
}
playback.props = {
node.name = <your-speaker-node-name>
}
}
}