On Sat, Jul 13, 2013 at 5:32 PM, Fons Adriaensen <[email protected]> wrote: > This could be done very efficiently, in particular if you accept some > compromises for the lowpass filter, and even more if the waveforms can > be summed before downsampling.
Good idea, I wouldn't have thought of summing before downsampling. In terms of compromises for the lowpass filter, what is it you were thinking of? A bit of reading tells me that most analog devices use elliptic filters, with 4/8 poles or so for this purpose.. Seems a little overkill? I've no experience in this area... yet! -Harry
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