Acoustic Echo Cancellation on Android

[Firas Al Kafri]

Hello,

We are trying to enable the already implemented echo cancellation technology.

Scenario:

Two android devices are successfully connected and voice is perfectly fine on both devices. 

Device-1 activates Speakerphone:

AudioManager audioManager = ((AudioManager) getSystemService(AUDIO_SERVICE));
audioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);
audioManager.setSpeakerphoneOn(false);

Device-2 Hears themselves when they talk

[Henrik Andreasson]

I fail to understand how this question is related to WebRTC. Care to elaborate?

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[Abhishek Kumar Gupta]

Hi Firas Al Kafri,

Have you found the solution for the issue. I am also facing the same issue.

Any help or guidance will be well appreciated.

[Phil]

Hi Abhishek,

This will help you.

WebRtcAudioUtils.setWebRtcBasedAcousticEchoCanceler(true);
WebRtcAudioUtils.setWebRtcBasedNoiseSuppressor(true);

[Abhishek Kumar Gupta]

Hi Phil,

With your suggestion, issue got resolved in most of the devices. But still I am facing the same issue in few devices like Motorola One Power (Android 10), Redmi Note 5 Pro (Android 7.1.2).

Any help or advice will be well appreciated. 

On Friday, 27 November 2015 12:23:29 UTC+5:30, Firas Al Kafri wrote:

[Abhishek Kumar Gupta]

Some phones can't do hardware echo cancellation, even though they advertise it's available. Redmi Note 5 is definitely one of them, take a look at https://github.com/signalapp/Signal-Android/blob/master/app/src/main/java/org/thoughtcrime/securesms/ApplicationContext.java, search for HARDWARE_AEC_BLACKLIST. So, to enable WebRTC AEC, use below methods of JavaAudioDeviceModule.class

setUseHardwareAcousticEchoCanceler(false)       
setUseHardwareNoiseSuppressor(false) 

(For reference, please have a look into createJavaAudioDevice() of PeerConnectionClient.java - Checkout official android example on googlesource.com