[music-dsp] RIAA inverse curve
music-dsp at umminger.com
Sat Feb 8 22:19:00 EST 2003
RIAA equalization can be done very well with a single biquad, the
which can be found in the music-dsp source code archive. I posted these in
I forget whether the was the RIAA curve or the inverse but since they are
related by swapping numerator and denominator in the transfer function, you
can easily get both from the posted coefficients.
These were not computed from the bilinear transform and they suffer no
If you are concerned about precision problems at low frequencies, the
solution is to use alternative filter structures for implementing biquads.
Zolzer's book has a nice overview of some of these.
Delivered using the Free Personal Edition of Mailtraq (www.mailtraq.com)
More information about the music-dsp