On 2010-08-03 , at 22:21 , Glen Pike wrote:
>You should maybe look using "twiddle" factors and creating these in the
> init too - so you are not doing cosine / sin math in the butterfly loops?
Thanks for the suggestion. I've tried both ways, and it's actually a tiny bit
faster to compute th
Hi,
You should maybe look using "twiddle" factors and creating these in
the init too - so you are not doing cosine / sin math in the butterfly
loops?
There are some FFT algorithm optimisations about which init these
and just do multiplication / addition in the main loop - you might h
Just a thought - try moving the variable declarations out of the loops:
http://www.rozengain.com/blog/2007/05/01/some-actionscript-30-optimizations/
http://osflash.org/as3_speed_optimizations
http://gamedevjuice.wordpress.com/2008/02/15/seven-tips-about-performance-optimi
On 2010-08-03 , at 06:07 , Patrick Matte wrote:
> Maybe check this http://blog.inspirit.ru/?p=405
Hey Patrick, thanks for the link (to Eugene Zatepyakin's "Fast Fourier
Transform for Flash"). It looks like an interesting implementation, but it uses
Alchemy. I've been reading up more on Alchemy,
Maybe check this http://blog.inspirit.ru/?p=405
> From: Gerry Beauregard
> Reply-To: Flash Coders List
> Date: Mon, 2 Aug 2010 09:59:05 +0800
> To: Flash Coders List
> Subject: [Flashcoders] A fast FFT in Flash?
>
>
> Does anyone know of a really good, fast F
Does anyone know of a really good, fast FFT implementation in AS3?
I write a lot of audio signal processing code in AS3, and some of it uses FFTs
(Fast Fourier Transforms) which can be pretty CPU intensive. I have my own AS3
FFT which is pretty good (about 15x faster than the one in as3mathlib
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