[sdiy] Digital filtering (Oversampling and downsampling)

[Ben Lincoln]

On Mon, August 3, 2009 12:23 pm, Ingo Debus wrote:

> No, no, we're not not taking every 8th sample as-is, this would make
> the whole oversampling thing pointless (why generate all the samples
> if they are chucked away anyway?). We're taking every 8th sample of
> the filter's output. The filter's input is still fed with all the
> samples. In reality, we're only calculating every 8th filter output
> sample, but all filter input samples are used.

Ah, OK, that makes a lot more sense. Thanks! No more posts to SDIY for me
before noon due to lower reading comprehension.

- Ben