[music-dsp] Block Diagram for 1/3 Octave Graphic Equaliser

shifty at sidehack.sat.gweep.net shifty at sidehack.sat.gweep.net
Thu Oct 25 14:28:27 EDT 2001


you are a sick man for generating that :)

we should also refer to rbj's ueber-famous filter/eq document
while we're on the subj.

http://www.harmony-central.com/Computer/Programming/Audio-EQ-Cookbook.txt

-N

> Here you go: a 32-band graphic equalizer block diagram.
> 
> Implement it using 32 bandpass filters with 1/3 octave bandwidth and
> careful attention to phase shift matching (each band could be a 4th
> order IIR, for example)
> 
>                |------------|
>                |            |
>             |->|  Band 1    |->|
>             |  |            |  |
>             |  |------------|  |
>             |                  |
>  INPUT ---->+  |------------|  +----> OUTPUT

 ...

>             |  |------------|  |
>             |  |            |  |
>             |->|  Band 32   |->|
>                |            |
>                |------------|

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