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android - AudioSource.VOICE_COMMUNICATION doesn't …
https://stackoverflow.com/questions/27019105/audiosource-voice-communication-doesnt-work-on-all-devices-which-are-support-vo
The Android Version is 4.4.2. The receiving device only get audio data with a buzzing. If i use AudioSource.MIC which is used on the fallback for devices which are not support AudioSource.VOICE_COMMUNICATION it works, but without the EchoCancelation which are needed and which should supported by this device.
How to record voice call using AudioSource.VOICE_CALL ...
https://stackify.dev/379842-how-to-record-voice-call-using-audiosource-voice-call
Use VOICE_COMMUNICATION as AudioSource as it is microphone audio source tuned for voice communications such as VoIP. I am also working with call recording app but it failed in Android 7.1.1 If you are not trying call record on Android 7.1.1 below code will work.
MediaRecorder.AudioSource - Android SDK | Android …
https://stuff.mit.edu/afs/sipb/project/android/docs/reference/android/media/MediaRecorder.AudioSource.html
Microphone audio source tuned for voice communications such as VoIP. It will for instance take advantage of echo cancellation or automatic gain control if available. It otherwise behaves like DEFAULT if no voice processing is applied. Constant Value: 7 (0x00000007)
Sharing audio input | Android Developers
https://developer.android.com/guide/topics/media/sharing-audio-input
To capture the voice call's uplink (TX), downlink (RX), or both, the app must specify the audio sources MediaRecorder.AudioSource.VOICE_UPLINK or MediaRecorder.AudioSource.VOICE_DOWNLINK, and/or the device AudioDeviceInfo.TYPE_TELEPHONY. Android 11 behavior. Android 11 (API level 30) observes …
Recorded Audio using MediaRecorder.AudioSource.VOICE ...
https://www.reddit.com/r/androiddev/comments/f9opb1/recorded_audio_using/
Use of MediaRecorder.AudioSource.VOICE_COMMUNICATION instead of MediaRecorder.AudioSource.MIC) is very helpful in recording pre-processed clean audios. But, recently I found some issues in which the recorded files are empty are being reported on a few devices which were recently updated to Android 10.
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