I was wondering... does anyone know how music players' visualization features work? What aspects of the music does it process? Thanks in advance
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Posted 28 June 2008 - 05:35 AM
Posted 28 June 2008 - 11:02 PM
Posted 29 June 2008 - 08:26 AM
I'm not very familiar with the algorithms that are used specifically.
But you might want to investigate FFT (Fast Fourier Transform). Fourier transform algorithms in general are able to convert any signal in the time domain representation into a frequency domain representation. This means that using it on an audio stream, it would be possible to generate amplitude information for certain frequencies or frequency bands. Like a spectrum analyser, or analogous to a setup with filters for several frequency bands.
Using this information in digital form, it would be possible to trigger visual effects, e.g. alternating colour scheme's depending on the frequencies and amplitudes used by the music, or more complex things.
But, like I mentioned, I'm not familiar with this particular subject, but at least, FFT would enable you to generate frequency dependant visual effects, but it's either overkill or ideal. You choose
Posted 14 August 2008 - 05:37 PM
Edited by mike09, 14 August 2008 - 05:38 PM.
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