Filter Design

[Paul Perry]

At 06:32 PM 26/01/99 -0000, allan.houston wrote:
>For my Synth(its a Uni. project), my lecturer has suggested these filters:
>
>MF10
>MF5
>LMF100
>LMF100C1
>LTC1068C
>
I was just looking at the MF10 the other day (I have a bunch).
In the specs, I see clock bleedthrough specified. Looks small,
but may drive you mad. 

Yes, you want every filter config known to science, and you want
several units to put in series, in parallel, whatever.
And, you want a variable speed voltage controlled clock to sweep
them. And, rat cunning modulation schemes for this.

And, you want to work out how to make it self oscillate.
(hint: op amp with back to back diodes in feedback loop).

paul perry melbourne australia

Seriously, since the clock is 100 times the freq, the clock freq is
likely to be smack in the audio band, and you might really hear it
during sweeps.