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das2C
das core C utilities (v3)
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das2C
das core C utilities (v3)
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A power spectral density estimator (periodogram) More...
#include <das2/dft.h>
Public Member Functions | |
| DAS_API Das2Psd * | new_Psd (DftPlan *pPlan, bool bCenter, const char *sWindow) |
| Create a new Power Spectral Density Calculator. More... | |
| DAS_API void | del_Das2Psd (Das2Psd *pThis) |
| Free a Power Spectral Density calculator. More... | |
| DAS_API DasErrCode | Psd_calculate (Das2Psd *pThis, const double *pReal, const double *pImg) |
| Calculate a Power Spectral Density (periodogram) More... | |
| DAS_API DasErrCode | Psd_calculate_f (Das2Psd *pThis, const float *pReal, const float *pImg) |
| The floating point array input analog of Psd_calaculate() More... | |
| DAS_API double | Psd_powerRatio (const Das2Psd *pThis, double *pInput, double *pOutput) |
| Provide a comparison of the input power and the output power. More... | |
| DAS_API const double * | Psd_get (const Das2Psd *pThis, size_t *pLen) |
| Get the amplitude magnitude vector from a calculation. More... | |
A power spectral density estimator (periodogram)
This is a wrapper around the FFTW (Fastest Fourier Transform in the West) library to handle memory management, normalization and windowing.
1.9.1