Hi Fons,
For a 20Hz signal I'm getting -3 degrees error at 96kHz but -37 degrees
at 192kHz. Not done any sweeps yet, just spot measurements. If this is
different from yours, it's probably something I've done in porting the code
over to a VST....
Dave
On Jan 15 2011, f...@kokkinizita.net wrote:
On Sat, Jan 15, 2011 at 06:19:33PM +0000, d...@york.ac.uk wrote:
problem with Fon's code is that the filter poles are pre-optimised
for a limited range of sample rates (44.1/88.2 and 48/96) and I'd
like more even more choice.
192 kHz ???
It shows a little bit more phase
difference variance at the higher frequencies than the CSound
implementation but unless I am missing something it is only a four
pole per leg implementation, as opposed to CSounds (and Geoffrey's)
6 poles per leg.
Yes, 2 second order sections in series.
In both cases, however, the low end (under a
hundred Hz) becomes problematic at the higher sampling rates,
Are you sure ?
I measure +/- 4 degrees error in the range 20Hz .. 20kHz, even
at 96 kHz. Below 20Hz it gets worse of course.
Ciao,
_______________________________________________
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound
