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A client of mine wants to continually record audio and when he clicks submit he wants to submit the last 10 seconds only. So he wants a continual recording and only keeping the last x seconds.
I would think this requires something like a circular buffer, but (as a somewhat newbie for iOS) it looks like AVAudioRecorder can only write to a file.
Are there any options for me to implement this?
Can anyone give a pointer?
I would use the Audio Queue Services. This will allow you isolate certain parts of the buffer. Here is the guide to it: http://developer.apple.com/library/ios/#documentation/MusicAudio/Conceptual/AudioQueueProgrammingGuide/AQRecord/RecordingAudio.html#//apple_ref/doc/uid/TP40005343-CH4-SW1