[PD] [bp~] really equal to [vcf~]?

[IOhannes m zmölnig]

On 07/24/2014 10:14 PM, Alexandre Torres Porres wrote:
>> vcf~ isn't a 2-pole real filter but a 1-pole complex one
> 
> kinda relative to this, since biquad~ can be emulated with 2 complex poles
> + 2 complex zeros

it can not only be emulated, it can be implemented with a complex
2-pole/2-zero filter.

> , is it more accurate to say biquad is a
> 2-complex_pole-2-complex_zero-filter???
> 

no.
it's accurate to say that [biquad~] is a real-valued 2-pole/2-zero filter.

real values are a subset of complex values (with the imaginary part set
to 0).

> In its description it says it is a 2-pole-2-zero-filter...

which is true.

gfmasdr
IOhannes


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