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Using Android's Built-in Acoustic Echo Cancellation

Does anyone know how to use the built-in acoustic echo cancellation on an Android device? It is located somewhere in silicon and is used for hands-free GSM / CDMA. We really would like to use it for a VoIP application instead of skating on our own.

Ben

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Finally, I was able to get echo cancellation to work on my Arm5 processor (WM8650) (Android 2.2). Below are the steps I have taken.

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