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I know that some devices headphone ports (maybe all of them? any reference here would be good) have 3 channels, for stereo sound and microphone. So I was wondering if it's possible to detect something like this pedal on these devices.

If it's possible, using the audio recorder would be enough? I'm studying possibilities for an app here, and this sounds promising if possible.

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For close voters: While the OP's motivation is for app development, the answer to this question could be of use to general Android users considering certain peripherals. – Al Everett Nov 27 '12 at 16:07
Well, if this is in the wrong forum I have a totally wrong idea what this is for. I assumed this was better here than in stackoverflow. – gameower Nov 27 '12 at 16:35
Check the FAQ. Android development questions are off-topic here; they belong on Stack Overflow. However, as I've said, I don't think this question is necessarily off-topic. – Al Everett Nov 27 '12 at 17:11

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