In the past, I converted mp3s to .wav format using a free tool (one of dozens) found on the internet. The tool I used was for Windows, but I just did a search and found http://www.mpg123.de/, which can apparently do this using mpg123 -w <filename>.wav <filename>.mp3

Wav files contain PCM data in an uncompressed (RIFF) format which makes them easy to read and manipulate. PDL has a module PDL::Audio that can read .wav files directly: $pdl = raudio "file.wav";

One thing worth mentioning is that mp3 and ogg formats are "lossy", so the fidelity of the sound it manipulated. Human ears may not detect it, but FFT certainly will.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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In reply to Re: Music and FFT by BrowserUk
in thread Music and FFT by llancet

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