Disable noise cancellation for microphone in Android (1.5)?

audio audio-recording microphone android-1.5-cupcake
Dan picture Dan · Oct 19, 2010 · Viewed 11.4k times · Source

Is it possible to disable noise cancellation for the microphone in Android (specifically 1.5) via code?

I want to create a dumb MicrophoneApp that records all the background noises, but I believe that noise cancellation for the microphone is getting in the way. I know you can do it if you root your phone and edit settings (ie this article), but I want to make it without root the phone.

Answer

Douglas Jones picture Douglas Jones · Oct 26, 2012

Noise filters in audio recording sources on Android vary greatly from device to device. It isn't until Ice Cream Sandwich that any sort of definition was put into the device compatibility document defining a method for not having filtering. That method id to use the MediaRecorder.AudioSource.VOICE_RECOGNITION audio source. Before that it's just choose a setting and hope for the best. I've found that some devices work better with MIC and some with VOICE_RECOGNITION prior to 4.0. HTC seems to have started the use fo VOICE_RECOGNITION as a no-filter zone pre-ICS.

Since there is no loop-back audio interface you can't even detect it but you can surface different audio paths to the user to choose from.

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