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EVRC/butterworth filter

Started by Gerard Lyonnaz October 12, 2004
 Is there somewhere a free code of a EVRC coodec?
 Or at least a sample of the first 6th order Butterworth filter?

 Gerard

Gerard Lyonnaz wrote:

> Is there somewhere a free code of a EVRC coodec? > Or at least a sample of the first 6th order Butterworth filter? > > Gerard > >
The best place to look for an example implementation of most codecs these days is the reference code published with the specs. However, I don't think the EVRC specification or code if freely downloadable. If you have the specification, I would have thought you would also have the reference code. Excuse me for asking, but why do you need help with probably the most trivial problem in implementing a codec? Almost any IIR filter designer should produce a usable Butterworth implementation for you, although some produce a single stage and leave you to break it into bi-quads. Regards, Steve