[LAD] DSP: Band limiting wavetable oscillator

[Harry van Haaren]

On Sat, Jul 13, 2013 at 5:32 PM, Fons Adriaensen <fons at linuxaudio.org>
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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.linuxaudio.org/pipermail/linux-audio-dev/attachments/20130713/e7e6293f/attachment.html>