| Hi Art,
Sorry for the late answer, still catching up on the list...
On Fri, 2006-02-24 at 22:15 -0500, Art Hunkins wrote:
> I know very little about how reverb works, and request info. I'm working
> with reverbsc, wish to change (lower) sr (to facilitate realtime
> performance), and need to know if reverbsc will give a different result. So:
>
> 1) Does reverb (esp. reverbsc) generate any *frequencies* not present at
> input?
>
> (My assumption is no.)
It doesn't generate any frequencies not present, since it basically
repeats what's coming in (maybe adding just a little colouring)
> 2) Assuming that the sample rate is compensated for correctly (israte) in a
> parallel way, that kfco is within the recommended range (it is the low-pass
> filter cutoff point), will there be any change in output for the two sr's as
> long as the highest input frequency remains somewhat above kfco?
> (My assumption is that there will be no difference except for the normal
> superiority/cleanness of the higher sr.)
I would think there would not be a significant difference (apart from
the cleanliness) if the low pass filter is very steep and set low
enough. (as long as the highest input frequency remains somewhat BELOW
kfco), but remember the LPF would have to be set somewhere around 8k-9k
to be effective, and that can dull the sound considerably, so you can
make sure the sound is similar for both sample rates, but the sound
would be lacking high frequency content.
Cheers,
Andrés
|