Re: [LAD] DSP: Band limiting wavetable oscillator

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To: Fons Adriaensen <fons@...>
Cc: Linux Audio Developers <linux-audio-dev@...>
Date: Saturday, July 13, 2013 - 4:56 pm

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On Sat, Jul 13, 2013 at 5:32 PM, Fons Adriaensen
wrote:

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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On Sat, Jul 13, 2013 at 5:32 PM, Fons Adriaensen=
<fons@linuxaudio.org> wro=
te:> This could be done very efficiently, in particular if you accep=
t some

ve thought of summing before downsampling.In terms of comprom=
ises 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 litt=
le overkill? I've no experience in this area... yet!
-Harry

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Messages in current thread:
[LAD] DSP: Band limiting wavetable oscillator, Harry van Haaren, (Sat Jul 13, 4:04 pm)
Re: [LAD] DSP: Band limiting wavetable oscillator, Fons Adriaensen, (Sat Jul 13, 4:32 pm)
Re: [LAD] DSP: Band limiting wavetable oscillator, Harry van Haaren, (Sat Jul 13, 4:56 pm)