I've verified my calculations and duplicated the ggee code in a short perl script. My script and my Pd patch match, but are still off from ggee. I feel like a noob here, what's the difference?
The script/patch are being compared at 100hz, bw=1, sr=48000.
~Brandon
On Sun, May 17, 2009 at 9:45 PM, brandon zeeb zeeb.brandon@gmail.comwrote:
Hey,
I've implemented the same coefficients as the ggee [lowpass] external in Pd, and can't seem to figure out where my calculations are off. The calculations are in the [pd lowpass] sub patch.
Any ideas? ~Brandon
On Sun, May 17, 2009 at 2:43 PM, Frank Barknecht fbar@footils.org wrote:
Hallo, brandon zeeb hat gesagt: // brandon zeeb wrote:
Good call! I explored the GGEE objects in Pd-extended, which led me to their source code (A+ for readability), which led me to this: http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt
The filter objects in the rjdj-lib just do these calulations as pd-vanilla abstractions (no stability checks)
Ciao
Frank
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list