This is the code that I cobbled together from your post, https://askubuntu.com/questions/60837 and https://aweirdimagination.net/2020/07/19/virtual-microphone-using-gstreamer-and-pulseaudio/
pactl load-module module-combine-sink \
sink_name=Web_Speech_Sink slaves=$(pacmd list-sinks | grep -A1 "* index" | grep -oP "<\K[^ >]+") \
sink_properties=device.description="Web_Speech_Stream" \
format=s16le \
channels=1 \
rate=22050
pactl move-sink-input $(pacmd list-sink-inputs|tac|perl -E'undef$/;$_=<>;/speech-dispatcher-espeak-ng.*?index: (\d+)\n/s;say $1') Web_Speech_Sink
pactl load-module module-remap-source \ master=Web_Speech_Sink.monitor \ source_name=Web_Speech_Monitor \ source_properties=device.description=Web_Speech_Output
sink_name=Web_Speech_Sink slaves=$(pacmd list-sinks | grep -A1 "* index" | grep -oP "<\K[^ >]+") \
sink_properties=device.description="Web_Speech_Stream" \
format=s16le \
channels=1 \
rate=22050
pactl move-sink-input $(pacmd list-sink-inputs|tac|perl -E'undef$/;$_=<>;/speech-dispatcher-espeak-ng.*?index: (\d+)\n/s;say $1') Web_Speech_Sink
pactl load-module module-remap-source \ master=Web_Speech_Sink.monitor \ source_name=Web_Speech_Monitor \ source_properties=device.description=Web_Speech_Output
Using this approach I am able to capture output from only speech-dispatcher-espeak-ng module using
navigator.mediaDevices.getUserMedia({audio: true})
.then(async stream => {
const [track] = stream.getAudioTracks();
const devices = await navigator.mediaDevices.enumerateDevices();
const device = devices.find(({label}) => label === 'Web_Speech_Output');
track.stop();
console.log(devices, device);
return navigator.mediaDevices.getUserMedia({audio: {deviceId: {exact: device.deviceId}}});
})
.then(stream => {
const recorder = new MediaRecorder(stream);
recorder._ondataavailable_ = e => console.log(URL.createObjectURL(e.data));
const synth = speechSynthesis;
const u = new SpeechSynthesisUtterance('test, test, then test again');
u._onstart_ = e => {
recorder.start();
console.log(e);
}
u._onend_ = e => {
recorder.stop();
recorder.stream.getTracks().forEach(track => track.stop());
console.log(e);
}
synth.speak(u);
});
.then(async stream => {
const [track] = stream.getAudioTracks();
const devices = await navigator.mediaDevices.enumerateDevices();
const device = devices.find(({label}) => label === 'Web_Speech_Output');
track.stop();
console.log(devices, device);
return navigator.mediaDevices.getUserMedia({audio: {deviceId: {exact: device.deviceId}}});
})
.then(stream => {
const recorder = new MediaRecorder(stream);
recorder._ondataavailable_ = e => console.log(URL.createObjectURL(e.data));
const synth = speechSynthesis;
const u = new SpeechSynthesisUtterance('test, test, then test again');
u._onstart_ = e => {
recorder.start();
console.log(e);
}
u._onend_ = e => {
recorder.stop();
recorder.stream.getTracks().forEach(track => track.stop());
console.log(e);
}
synth.speak(u);
});
Can the pactl and pacmd code be reduced?
On Tue, Dec 22, 2020 at 2:53 AM Arun Raghavan <arun@xxxxxxxxxxxxxxxx> wrote:
On Mon, 21 Dec 2020, at 9:52 AM, guest271314 wrote:
> A virtual microphone can be created using module-remap-source
> https://aweirdimagination.net/2020/07/19/virtual-microphone-using-gstreamer-and-pulseaudio/
>
> pactl load-module module-remap-source \ master=virtmic.monitor
> source_name=virtmic \
> source_properties=device.description=Virtual_Microphone
>
> AFAICT a sink-input cannot be set as the source for the virtual microphone.
>
> A sink-input can be recorded using parec or parecord --monitor-stream option
>
> parecord -v -r --monitor-stream=26 --file-format=wav output.wav
>
> How to set a sink-input as source for the virtual microphone so that
> the output of the sink-input is still played back to speakers or
> headphones and simultaneously is the source of the virtual microphone?
You could use module-combine-sink to play that sink input to a null-sink and the real sink, and then use the null-sink's monitor as your source.
-- Arun
_______________________________________________
pulseaudio-discuss mailing list
pulseaudio-discuss@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
_______________________________________________ pulseaudio-discuss mailing list pulseaudio-discuss@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
