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Biquad bandpass filter for iPhone

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Biquad bandpass filter for iPhone

Subject: Biquad bandpass filter for iPhone
From: Mark's Studio <email@hidden>
Date: Thu, 30 Oct 2008 12:22:08 +0100

I am trying to port an application to the iPhone, the original application is using Altivec for the biquad bandpass filter, the original code was based on Cookbook formulae for audio EQ biquad filter coefficients by Robert Bristow-Johnson

so i converted the vector code to scaler, but i can't get it to work (only tried the iPhone Simulator)

i found a different biquad in the AUPinkNoise example, but it has no bandpass, anyone knows how to setup the bandpass parameters with a bandwidth parameter ?.

Thanks
Peter Mark

Mark's Recording Studio A/S
Lundeskovsvej 3
2900 Hellerup
Denmark
Tel: +45 35366078
Fax: +45 35366038
Mobile: +45 20416018
www.marks-studio.dk
email@hidden

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