[sdiy] Audio Anti Aliasing Filter

Jay Schwichtenberg jays at aracnet.com
Thu Dec 20 18:10:37 CET 2012


Check out the app notes and datasheets for audio DACs (TI/BB, Analog, AKM,
Wolfson, Cirrus). You'll find a lot of info there. A number will have the
math for the filters so you can tweak them.

This is a good one to start with:

Have fun!
Jay S.

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Scott Gravenhorst
Sent: Thursday, December 20, 2012 7:09 AM
To: synth-diy at dropmix.xs4all.nl
Subject: [sdiy] Audio Anti Aliasing Filter

What are people here using for audio anti-aliasing filters?  

I'm looking for something simple.  In my own mind, I'm thinking state
variable lowpass with unity Q and cutoff of some 20 kHz for sample rates of
44.1 kHz and above.  

Are there better or simpler?

-- ScottG
-- Scott Gravenhorst
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