Re: [Audacity-nyquist] Higher-order filters cannot use a signal for the cutoff frequency

[Roger D. <rb...@cs...>]

Hi David,
    It looks like the higher-order filter functions cannot be modulated 
with signals. I can put this on my list of things to extend in the 
future. The reason for using higher-order filters instead of a cascade 
of lower-order filters is that you can make filters better-behaved, e.g. 
a flatter frequency response in the pass-band, by optimizing the filter 
coefficients. For now, I guess you are stuck with the cascade approach.

    -Roger