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I am adding a voice memo capability using AVAudioRecorder and I need to know the best settings for the recorder for recording voice. Unfortunately, I know nothing about audio to the extent I am not even sure what terms to google for. Currently, I am using the following which I copied from somewhere for testing purposes: recorderSettingsDict=[[NSDictionary alloc] initWithObjectsAndKeys:[NSNumber numberWithInt:kAudioFormatAppleIMA4],AVFormatIDKey, [NSNumber numberWithInt:44100.0],AVSampleRateKey, [NSNumber numberWithInt: 2],AVNumberOfChannelsKey, [NSNumber numberWithInt:16],AVLinearPCMBitDepthKey, [NSNumber numberWithBool:NO],AVLinearPCMIsBigEndianKey, [NSNumber numberWithBool:NO],AVLinearPCMIsFloatKey, nil]; or: defaultSettings = { AVFormatIDKey = 1768775988; AVLinearPCMBitDepthKey = 16; AVLinearPCMIsBigEndianKey = 0; AVLinearPCMIsFloatKey = 0; AVNumberOfChannelsKey = 2; AVSampleRateKey = 44100; }; This works but I don't know if it's optimal for voice in terms of quality, speed, file size etc. The AVAudioRecorder Class Reference list many settings constants but I have no clue which ones to use for voice. Baring that, if someone knows of a good "AudioFormats for Dummy's" resource I will take that as well. (Note:I've been through the Apple Docs and they assume a knowledge base in digital audio that I do not posses.)

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