[Speex-dev] FFTW3 for libspeexdsp

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


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 

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

Best regards,

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