Resampling in FPGA with irrational or large rational ratios

Resampling with small integer ratios can be pretty staightforward, like a rate change of 3/2, upsample by 3 -> LPF -> decimate. However, it's not as simple when it's a ratio of large integers or some arbitrary new sample rate.

I found one document on resampling:

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Is this how others are implementing resampling for these cases? Multiplying the input samples with a windowed, weighted sinc at the new sample frequency?

Thanks for any insights, Brady

Reply to
bgaughan
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I believe that polyphase filters are the method of choice at the moment.

You might also post this on comp.dsp -- consistently high quality answers may be found there.

Greg

Reply to
Greg Berchin

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