CODEWITHSUNDEEP
iphonesdkrecordingspectrogram
Anand
Anand

Reputation: 153

Voice recording spectrogram

I am creating a voice recording app wherein I have displayed a decibel meter. However, I would like to include a voice spectrogram on the lines of what is found in Dragon Dictate or Google Search applications.

Any suggestions on where I can start in this regard. I am a complete dummy when it comes to FFT or spectrogram analysis.

Look forward to any suggestions.

Upvotes: 2

Views: 944

Answers (1)

hotpaw2
hotpaw2

Reputation: 70673

Apple's aurioTouch sample app (in the iOS Dev Center at developer.apple.com) includes example source code for doing an FFT and displaying a spectrogram from microphone input. Even better is using the much faster FFT in the newer iOS Accelerate framework.

Upvotes: 1

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