How to turn on echo cancellation?

[goderfly]

I use the biresip on the tablet, the call comes from the dial pad of the intercom, from the side of the tablet I can not hear the echo, but the person who dial from the panel hears himself. How to suppress an echo using opensles or any other module? How to turn on echo cancellation in baresip?

[juha-h]

Added reference to #26.

[juha-h]

Echo cancellation has now been implemented for PCMU, PCMA, and G.722.1 codecs. Opus is not (currently) supported, due to its high frequency and 2 channels.

[assegaf]

hi juha, its it automatic enabled or need some config when using that codec,

[juha-h]

Currently echo cancellation is enabled for all codecs. Opus now uses only one channel at sample rate 16000.

[assegaf]

I am kinda using the libbaresip to convert whatsapp voice call to sip, kinda point us where to turn that off, we want pure no modification audio to make sure the quality not compromised ..

[juha-h]

You can disable echo cancellation by not loading webrtc_aecm.so module. Check also other audio related lines in config file.

[assegaf]

I thought we talking about spandsp thing, it is pure src/play ? no modification ?

we are not enabling webrtc_aecm module on compile ...

[assegaf]

there module
libbaresip-android/baresip/modules/echo
echo.c module.mk

is this ?

[assegaf]

You can disable echo cancellation by not loading webrtc_aecm.so module. Check also other audio related lines in config file.

but I will try that module too, maybe quality getting better ..., its seem overkill requirement to compile it ... very long,

[juha-h]

Din writes:

there module libbaresip-android/baresip/modules/echo echo.c module.mk is this ?

No, echo is echo module. You should ask this kind of questions on baresip list.

[assegaf]

Echo cancellation has now been implemented for PCMU, PCMA, and G.722.1 codecs. Opus is not (currently) supported, due to its high frequency and 2 channels.

my mistakes, I thought of it enabled by default, it seem its just an echo application (for baresip pc), not pre processing audio.