spectrumdata info

[benHc]

Hi there!

I'm developping a VIS plugin for winamp 5.x
i'm trying to analyze the spectrum data
given by winamp to split the frequencies
into bass,medium and treble (or more)
I have a few question:
1) what range frequencies do represents the spectrumData?
60 hz to 16 000 hz? where can i get this info?
2) the spectrumData scale seems to be linear. i suppose it's more easy to work with a logarithmic scale. How do i convert the spectrumData to my own arrayData with a logarithmic scale?

Thanks you!