Audio Equalizer

Hi

I want build a multiband ( 10 band) 2-channel audio equalizer with FIR or IIR filters. Can you suggest any sample project or ready library for that purpose ?

Regards,
Akin Ocal Start a New Thread

Akin --

Go to freescale.com and search for two Application Notes, AN2110 (stereo
10 band EQ with code for 563xx ICs). There is an earlier version
covering the same application, but limited to 56xxx earlier chips and I
don't have the APP Number handy/

Best

Chris Moore
a...@hotmail.com wrote:
>
> Hi
>
> I want build a multiband ( 10 band) 2-channel audio equalizer with FIR
> or IIR filters. Can you suggest any sample project or ready library
> for that purpose ?
>
> Regards,
> Akin Ocal
>
>
> No virus found in this incoming message.
> Checked by AVG.
> Version: 7.5.524 / Virus Database: 269.23.8/1415 - Release Date: 5/5/2008 6:01 AM
>

--
-----------------------------------
Seven Woods Audio, Inc. Christopher Moore
Concepts, Products, Circuits for Audio Analog/Digital
m...@SevenWoodsAudio.com
http://www.SevenWoodsAudio.com Start a New Thread

Just be aware that the graphic EQ in the freescale app note may not give reciprocal boost/cut filter responses. I implemented their grapic EQ from their original app note APR2/D "Digital Stereo 10-Band Graphic Equalizer" about 12 years ago and it worked but the boost vs. cut transfer functions are not reciprocal and therefore have different filter shapes (non-reciprocal filters). See my post about 2 months ago regarding how to derive reciprocal EQ transfer functions.

Regards,
Gene Start a New Thread