Java Question Echo Cancellation libraries

[KZero]

Hi,

I'm not sure if I should post this on Additional libraries or the questions section

Echo cancellation is a big hassle on Android and the built in AEC not working on most devices

I wrapped this two libraries
WebRTC Echo Cancellation
Speex Echo Cancellation

both libraries wrapped successfully but I couldn't figure out how to make them work probably to remove the echo so there is no example attached

it will be really helpful if anyone could make this work as there is no other AEC solution for B4A available yet.

 

[Addo]

Found some refrence on elemnating the echo here

Android Audio and Video Echo and Noise Reduction (Android Audio Acquisition and Echo Cancellation)

Audio and video is very nauseous for beginners when they first come into contact with this piece ~I make this piece myself and start from scratch. I also browse countless data and blogs on the Internet and try many ways. The general method on the ...

www.fatalerrors.org

But i have to set back and try, though i didn't realize the usage of the library

 

[Addo]

The webrtc echo cancelation library aren't ready enough to be used with audio streamer

It should be used in recording buffer event to filter the audio bytes from echoing.

But the wrapper you have made is taking shorts not bytes.. As well it will be a heavy task to convert bytes to shorts and shorts to bytes. I think the library should be adjusted to be compatible with audio frames as bytes that been captured in recording buffer event.

 

[Addo]

its seems when i use audio source 7 "VOICE_COMMUNICATION" the echo reduced when i test it on api 11 and above

audiostream.Initialize2(7, "audiostream", cSAMPLE_RATE, True, cBitsPerSample, audiostream.VOLUME_MUSIC)

as the documentation refer in android developers website

MediaRecorder.AudioSource | Android Developers

developer.android.com

i am not sure if you will have the same results