AVAudio detects note / step / etc. iPhone xcode objective-c

I am making an application on iphone, and I need a way to determine the melody of sounds coming through the microphone. (Ie A #, G, C โ™ญ etc.), I assumed that I would use AVAudio, but I really do not know, and I can not find anything in the documentation.

Any help?

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3 answers

Musical notes are nothing but certain frequencies of sound. You will need a way to analyze all frequencies in your input signal, and then find a way to isolate individual notes.

Fast Fourier Transform (FFT). , . , oScope iPhone.

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API- iOS . DSP. , .

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Apple aurioTouch iOS .

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@e.James , , , Pitch Detection. CCRMA, , . google Pitch, . FFT Audio Samples, FFT (. this this) MoMu toolkit. MoMu , , .

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