How to get the frequency-time diagram of sound like on SoundCloud?

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usgleb2013-11-13 14:47:37

Audio

usgleb, 2013-11-13 14:47:37

How to get the frequency-time diagram of sound like on SoundCloud?

Hello,
please tell me where to dig on the topic. Preferably, of course, an option for iOS. But, in principle, I will be glad to any solution in C / C ++.
Thank you!

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Alexander Borisovich, 2013-11-13
@usgleb

http://www.codeproject.com/Articles/14873/Simple-Audio-Out-Oscilloscope-and-Spectrum-Analyze

Done via FFT (Fast Fourier Transform)

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