How to explain an analog state variable filter ..

[Marc Nostromo [M-.-n]]

Very nice indeed.

Pretty funny because I was just thinking about implementing a state variable
filter this morning. Truth is I'm looking for a generic/not too expensive
filter whose source code is easy to find (mostly for quick tests and
benchmarking). And that I wouldn't spend 4 days coding :)

Would that be a good pick ? any other suggestion ?

http://www.musicdsp.org/archive.php?classid=3#142

 Cheers,
/M

2011/10/12 Tony Hardie-Bick <tony at entity.net>

> On 12/10/11 21:40, ibisum wrote:
>
>> .. properly:
>>
>> http://worrydream.com/#!/**Tangle <http://worrydream.com/#!/Tangle>
>>
>> {scroll down}
>>
>> Brilliant.
>>
>
> Indeed brilliant! What a fantastic concept for a web page.
>
> The filter itself doesn't show analogue behaviour, because you need (at
> least) limiters or some kind of non-linearity in the circuit for that, but
> it does show the behaviour of the frequency and resonance coefficients in a
> very helpful way.
>
> (Plus I guess no-one really knows how to graph what happens when an analog
> resonant filter overloads, including me, so best keep it simple... :) )
>
> Tony (HB)
>
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