good audio filters

[Magnus Danielson]

From: Heiko van der Linden <h.j.vanderlinden at el.utwente.nl>
Subject: good audio filters
Date: Wed, 29 Sep 1999 11:48:09 +0100

> 
> Hi there,
> a couple of friends of mine wondered if I could built an audio filter for
> them. I was wondering if anyone on the list knows schems for good filters
> and I was also wondering what would be the best filters to build. 
> Should I use low-pass, high-pass, band pass. Do the filters have to be
> 24dB/Oct. or are 12 dB/Oct. filters good enough.
> If anyone has some good suggestions. Please mail me.

You can allways peak at the ASM-1 schematics over at

http://home.swipnet.se/cfmd/synths/friends/stopp/

The other guys (like tomg) have a lot of other fine schematics. Enjoy!

As for which filter to build, as being the "best" is a matter of taste.
Normal filters are lowpass, then there is this 12dB/oct contra 24dB/oct issue.
Then there is this issue about what form of filtercore you would like to have
and, and, ...

There are thus virtually zillions of ways of doing this. And there are also
a lot of diffrent ways to get into trouble. Like hard-to-get components etc.

Cheers,
Nagnus