[Speex-dev] FFTW3 for libspeexdsp

Thorvald Natvig thorvald at natvig.com
Sun May 25 06:40:33 PDT 2008


Hi,

Attached is a patch which enables FFTW3 to be used by libspeexdsp. Using 
SSE, the FFT code is more than twice as fast, and it's 50% faster even 
without SSE. To enable the library, you'll need to call configure with 
'--with-gpl-fftw3'.

Based on the benchmarking we did, this also changes the default FFT to 
smallft for floating point implementations when not using FFTW3.

Best regards,
Thorvald

-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: speex-fftw3.diff
Url: http://lists.xiph.org/pipermail/speex-dev/attachments/20080525/8fbd63d9/attachment.txt 


More information about the Speex-dev mailing list