[sdiy] Audio Anti Aliasing Filter

[Jay Schwichtenberg]

Scott,

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:
http://www.cirrus.com/en/pubs/appNote/AN048Rev2.pdf

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
-- FPGA MIDI Synth Info: jovianpyx.dyndns.org:8080/public/FPGA_synth/
-- FatMan Mods Etc.: jovianpyx.dyndns.org:8080/public/fatman/
-- Some Random Electronics Bits:
jovianpyx.dyndns.org:8080/public/electronics/
-- When the going gets tough, the tough use the command line.

_______________________________________________
Synth-diy mailing list
Synth-diy at dropmix.xs4all.nl
http://dropmix.xs4all.nl/mailman/listinfo/synth-diy