filter waveform question

[Ingo Debus]

Magnus Danielson wrote:
> >>>>> "ID" == Ingo Debus <debus at cityweb.de> writes:
[...]
>  ID> The order of a low pass filter is equal to the number of parameters
>  ID> which can be varied independently. A first order filter has only one
[...]
> The order is strictly connected to the number of poles, not the dB/oct
> number not the number of parameters. The number of parameters is
> actually greater than the number of poles, it is up to about the
> double. The reason for this is that you can have zero's that also can
> be varied.

Sorry, I've mixed things up. I wrote "low pass filter" but I actually
meant "filter with no zeros". Of course a low pass filter can have zeros
too.

Ingo