how to reduce echo/noise in PJSIP android application when turn on speaker

Question

I have a PJSIP library used in my android based csipsimple application. Everything is working fine except one issue. When i turn on speaker there are lots of echo/noise in the call and it impossible to have conversation. What could be an issue and how to deals with this?

can you describe briefly with code you are using to reduce the noise. — Vipin Singh, Jan 08 '16 at 14:57
I am using PJSIP library with JNI and JAVA code in android application. — Dhananjay Kashyap, Jan 12 '16 at 06:41

score 3 · Accepted Answer · answered Jan 12 '16 at 07:38

3

A simple google search returns the XDA thread which says the possible cause and the solution.

I quote the answer given by gtj0

In CSipSimple, go to Settings, press the Menu button and set Expert Mode. Then in Settings, Media...set

Echo cancellation on

Echo mode to WebRTC

Noise reduction on

Clock rate to 16khz

Scroll to the bottom and select Audio troubleshooting then set

Use WebRTC implementation on

Restart stream when change routing on

Audio implementation to OpenSL-ES

You can also try different settings for Audio mode for SIP calls. IN_CALL seems to work for me.

Hope this helps.

answered Jan 12 '16 at 07:38

Nithish

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Let me go through it, and check. – Dhananjay Kashyap Jan 12 '16 at 08:53
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@DhananjayKashyap : Sure. Go through it and update your findings here. – Nithish Jan 12 '16 at 09:38
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Its working great for me as of now. I am looking for more best options. – Dhananjay Kashyap Jan 12 '16 at 14:16

how to reduce echo/noise in PJSIP android application when turn on speaker

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