tone circuits for pedals

[osborne]

ive designed a pedal of my own called the "tone-ail" (haha)
its a very simple circuit- it switches between 2 tone settings.
ive gone through many ideas on the 2 tone circuits, i think it would
be cool to have sort of a 5 band eq:
bass, mid bass, middle, mid high, treble.
i designed a 3 band eq, but for a challenge, i wanted to make 5 bands.
well, i gave up after working on if forever. im no expert, so maybe
one of you can help me out.


-ken

[aron]

Try this article out.

http://geofex.com/Article_Folders/EQs/paramet.htm

[Paul Perry (Frostwave)]

There is the National Semi (and other) 5 band eq chips, which should make it easy.

[osborne]

can you give me a link where i can buy one of those?

[Paul Perry (Frostwave)]

Either I dreamed the Nat Semi one, or it is deleted :oops:
But, here is a European one, Rohm BA3812L
http://www.radioland.net.ua/electronic-circuit-id-19.html
priced around 2 UK pound (though the price SHOULD be about 70c US)

Nat Semi has a digitally controlled EQ chip, LMC835 if people want to use a PIC (how stupid is that?!)