Mercurial > hg > qm-dsp
comparison dsp/transforms/FFT.cpp @ 255:9edaa3ce62e8
* Make MFCC able to accept already-FFT'd input, and simplify API a bit
* Add log power value to MFCC, restore windowing, and avoid some heap allocs
* In HMM, bail out of iteration if loglik hits NaN
| author | Chris Cannam <c.cannam@qmul.ac.uk> |
|---|---|
| date | Fri, 18 Jan 2008 13:24:12 +0000 |
| parents | 49844bc8a895 |
| children | 7fe29d8a7eaf |
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| 254:52c1a295d775 | 255:9edaa3ce62e8 |
|---|---|
| 22 FFT::~FFT() | 22 FFT::~FFT() |
| 23 { | 23 { |
| 24 | 24 |
| 25 } | 25 } |
| 26 | 26 |
| 27 void FFT::process(unsigned int p_nSamples, bool p_bInverseTransform, double *p_lpRealIn, double *p_lpImagIn, double *p_lpRealOut, double *p_lpImagOut) | 27 void FFT::process(unsigned int p_nSamples, bool p_bInverseTransform, |
| 28 const double *p_lpRealIn, const double *p_lpImagIn, | |
| 29 double *p_lpRealOut, double *p_lpImagOut) | |
| 28 { | 30 { |
| 29 | 31 |
| 30 if(!p_lpRealIn || !p_lpRealOut || !p_lpImagOut) return; | 32 if(!p_lpRealIn || !p_lpRealOut || !p_lpImagOut) return; |
| 31 | 33 |
| 32 | 34 |