sampling rate on ADSP-21364

Started by alex...@scopein.ch September 8, 2006

I've implemented filtering on the ADSP-21364 with a sampling rate of 48kHz. I use both analog and SPDIF interfaces.

And in each case, if I enter, for example, coefficients of a low-pass filter with a cutoff frequency of 500Hz, the signal is filtered by a low-pass filter with a cutoff frequency of 1000Hz.

So everything seems to be as the processor would read and write samples at 48kHz but is working at 96kHz!

Have you the same problem? And if yes, do you see a manner to solve it?

Alexis F.
Maybe the incoming data is stereo with left and right channels interleaved,
and you forgot to de-interleave it? Then your filter would be getting 96,000
samples per second.

Steve Conner