forKey:AVLinearPCMIsFloatKey] ĭo I have bad config here or is there a different way to reduce noise in the recorded audio? There are some voice recorder apps out there that are noise free as far as I can tell.
These settings are used if we are using kAudioFormatLinearPCM format We can use 2 (if using additional h/w) or 1 (iPhone only has one microphone) We can use kAudioFormatAppleIMA4 (4:1 compression) or kAudioFormatLinearPCM for nocompression Garageband simply requires you turn the noise gate on for the track that contains your recording and then set the threshold of the noise gate.
This is my configuration: AVAudioSession *audioSession = I’ve figured out how to use the noise gate to filter out ambient noise when not playing, but when hearing my recording there’s still a hiss/white noise, etc. I got some recording code working, but the recorded audio (from the iPod touch internal microphone) is very noisy.
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