Can NoAudioSource acts like a Dummy Audio Source while the app is in background

[mrtndat]

Hi,
I have a question about Audio Source.
When the app is in background, I don't want it to continues capturing video/audio data, so I stop camera preview and switch to NoAudioSource, but when the app is in the background for some minutes, the stream is closed by server because it does not receive any data sent from client.
I am thinking of switching to File Audio source which push a muted audio file or pushing a black frame data but it sound like hacky.
Can the RE support a Dummy Audio Source which keep pushing an empty audio data?

Thanks