Android Question speakerphone

[Igor_zenon]

Dear colleagues,

Help find out:

There is a possibility along with a library AudioStreamer to use the API function speakerphone, excluding the effect of the positive feedback, as is done in telephone with speakerphone?

 

[Erel]

Please use regular text when posting.

Are you referring to any specific Java API?

 

[Igor_zenon]

I am interested in protection from the echo signal(https://developer.android.com/reference/android/media/audiofx/AcousticEchoCanceler.html)

 

[Erel]

Interesting. You can add this effect with this code (depends on Reflection and JavaObject libraries):

Sub SetEchoCanceler
   Dim echo As JavaObject
   echo.InitializeStatic("android/media/audiofx/AcousticEchoCanceler".Replace("/", "."))
   If echo.RunMethod("isAvailable", Null) = True Then
     Dim r As Reflector
     r.Target = streamer
     Dim AudioRecord As JavaObject = r.GetField("audioRecord")
     echo.RunMethod("create", Array(AudioRecord.RunMethod("getAudioSessionId", Null)))
     Log("echo set")
   Else
     Log("Echo not available")
   End If
End Sub

Call it after you initialize the streamer.
Set the minSdkVersion to 16 (Android 4.1).

 

[Igor_zenon]

Thank you very much!!!