[sdiy] converting white noise to pink noise

Dave Manley dlmanley at sonic.net
Tue Mar 4 07:47:38 CET 2008


John Blacet wrote:
> --Pink noise is most useful in audio analysers--for electronic music it is
> not really a big deal.
>
> Any 1 to 4 pole LP or BP filter connected to a noise source is going to
> produce far more interesting results.
>
> I have seen a 3dB filter design however. It may have been in the Audio
> Handbook produced by National Semi years (and years) ago.
>   
I put a scan of the pink noise generator from the 1976 Audio Handbook here:

http://www.sonic.net/~dlmanley/PinkNatSemiAudioHandbook1976.jpg

The -3dB/octave response is claimed to be +/- 1/4dB from 10Hz to 40kHz.

-Dave



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