Re: Fast Pythagorus routine for audio calculations?
Re: Fast Pythagorus routine for audio calculations?
- Subject: Re: Fast Pythagorus routine for audio calculations?
- From: Steve <email@hidden>
- Date: Tue, 25 Mar 2003 14:32:42 +0000
It is for DSP, so float-level accuracy is important.
Steve
On Tuesday, March 25, 2003, at 02:10 pm, email@hidden
wrote:
I'm calculating spectrum amplitudes from the result of a complex FFT.
( sqrt(re^2 + im^2) )
Does anyone know of any optimized code or libs for doing this across
large, 8192+, arrays?
Are there any such utility routines in CoreAudio?
The code you're searching for has a big dependency with the accuracy
you need for your spectrum amplitudes estimation :
- if it is for graphic purpose you can roughly approximate it
- it it is for dsp purpose, you'll have to evaluate the error
propagation next in your dsp process
What is it for ?
Raf
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