Is it possible to intercept voice data during call?

Question

I plan to develop Android application which will encrypt/decrypt voice data such that parties can communicate using secure channel. So the question is: how to intercept voice/au

Answer 1

Call recording is not yet possible on Android. See this feature request.

You can record your voice from microphone, but you can not record the sound of the other party. If you only want to record your voice use android.media.MediaRecorder.AudioSource.MIC