func Synthesis(f0 []float64, spectrogram, aperiodicity [][]float64,
framePeriod float64, fs, length int) []float64 {
FFTSize := C.size_t(C.GetFFTSizeForCheapTrick(C.int(fs)))
spectrogramUsedInC := make2DCArrayAlternative(spectrogram)
aperiodicityUsedInC := make2DCArrayAlternative(aperiodicity)
synthesized := make([]float64, length)
C.Synthesis((*C.double)(&f0[0]),
C.int(len(f0)),
(**C.double)(&spectrogramUsedInC[0]),
(**C.double)(&aperiodicityUsedInC[0]),
C.int(FFTSize),
C.double(framePeriod),
C.int(fs),
C.int(len(synthesized)),
(*C.double)(&synthesized[0]))
return synthesized
}
func CheapTrick(x []float64, fs int, timeAxis, f0 []float64) [][]float64 {
FFTSize := C.size_t(C.GetFFTSizeForCheapTrick(C.int(fs)))
numFreqBins := C.size_t(FFTSize/2 + 1)
spectrogram := make([][]float64, len(f0))
for i := range spectrogram {
spectrogram[i] = make([]float64, numFreqBins)
}
spectrogramUsedInC := make2DCArrayAlternative(spectrogram)
C.CheapTrick((*C.double)(&x[0]),
C.int(len(x)),
C.int(fs),
(*C.double)(&timeAxis[0]),
(*C.double)(&f0[0]),
C.int(len(f0)),
(**C.double)(&spectrogramUsedInC[0]))
return spectrogram
}
func D4C(x []float64, fs int, timeAxis, f0 []float64) [][]float64 {
FFTSize := C.size_t(C.GetFFTSizeForCheapTrick(C.int(fs)))
numBins := C.size_t(FFTSize/2 + 1)
aperiodicity := make([][]float64, len(f0))
for i := range aperiodicity {
aperiodicity[i] = make([]float64, numBins)
}
aperiodicityUsedInC := make2DCArrayAlternative(aperiodicity)
C.D4C((*C.double)(&x[0]),
C.int(len(x)),
C.int(fs),
(*C.double)(&timeAxis[0]),
(*C.double)(&f0[0]),
C.int(len(f0)),
C.int(FFTSize),
(**C.double)(&aperiodicityUsedInC[0]))
return aperiodicity
}
func GetFFTSizeForCheapTrick(fs int) int {
return int(C.GetFFTSizeForCheapTrick(C.int(fs)))
}