Re: Simple Second Order Lowpass Filter Formula
| Date | 2017-02-17 18:38 |
| From | Russell Pinkston |
| Subject | Re: Simple Second Order Lowpass Filter Formula |
The Csound reson and butterworth filters are all 2nd order, so you can check them out in the sources. But if you’re looking for simple C code, not tied to Csound, I’ve found this book useful: “C Language Algorithms for Digital Signal Processing” by Paul Embree: https://www.amazon.com/Language-Algorithms-Digital-Signal-Processing/dp/0131334069 He also has some more recent books advertised on the same page, which look interesting, but I haven’t read them. From: A discussion list for users of Csound [mailto:CSOUND@LISTSERV.HEANET.IE] On Behalf Of Emmett Palaima
Hi, I'm doing some audio programming in C, and I'm looking for a simple 2nd order lowpass filter design I can implement. Not looking for anything too fancy, just need something like the Tone opcode but with a steeper cutoff. I was looking in the Audio Programming book but it only covers 1st order IIR filters.
Any suggestions?
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| Date | 2017-02-17 19:17 |
| From | Emmett Palaima |
| Subject | Re: Simple Second Order Lowpass Filter Formula |
I will definitely check that one out. $0.95 on Amazon, quite a good deal. On Fri, Feb 17, 2017 at 1:38 PM, Russell Pinkston <rpinkston@austin.utexas.edu> wrote:
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