Quectel UAC sound port for pulseaudio data

Project help balenaSound
1

Hello,

I have a Quectel modem that I use to send pre-recorded audio using the audio over USB functionality UAC. My implementation works fine on a standard raspbian image with a docker container.
I used pulseaudio to send PCM data and followed this guide - Container sound: ALSA or Pulseaudio · mviereck/x11docker Wiki · GitHub

I create a shared socket in the temp file which I use as an environment variable to send audio data, from the docker container to the local default sound card.

I am looking for guidance on a Balena implementation for the same. I have tried balena sound but no luck so far and it does not recognize the UAC port of Quectel modem.

Any help in this regard will be much appreciated.

2

Hello, can you share the Dockerfile and/or docker-compose that worked on Raspian with Docker? That might be a good starting point for getting a similar implementation working on balena. You mentioned balenaSound, but have you looked specifically at the audio block? GitHub - balena-labs-projects/audio: Audio building block for balenaOS, based on pulseaudio. - that is useful for routing audio.