How do I disable in-call volume

I am using microphone with media object. When I press the volume button on Android, the in-call volume changes, I want the media voice to change, how do I do it ?

I think your app needs to play some audio. Try playing a silent few-seconds long "music" in a loop.

I think your app needs to play some audio. Try playing a silent few-seconds long "music" in a loop.

I tried and did not

there seems to be no way, or no one knows