this repo has no description
add back smoothing and remove dead code
+6
-71
+6
-71
src/ext/fft.c
+6
-71
src/ext/fft.c
···
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float val = 2.0f * sqrtf(out[i].r * out[i].r + out[i].i * out[i].i);
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_samples[i] = val * fAmplification;
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}
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float fFFTSmoothingFactor = 0.9;
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for ( int i = 0; i < FFT_SIZE; i++ )
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{
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_samples[i] = _samples[i] * fFFTSmoothingFactor + (1 - fFFTSmoothingFactor) * _samples[i];
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}
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} else {
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for (int i = 0; i < FFT_SIZE; i++)
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{
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return true;
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}
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// bool FFT_GetFFT( float * _samples )
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// {
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// kiss_fft_cpx out[ FFT_SIZE + 1 ];
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// kiss_fftr( fftcfg, sampleBuf, out );
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// bool bPeakNormalization = true;
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// if (bPeakNormalization) {
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// float peakValue = fPeakMinValue;
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// for ( int i = 0; i < FFT_SIZE; i++ )
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// {
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// float val = 2.0f * sqrtf(out[i].r * out[i].r + out[i].i * out[i].i);
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// if (val > peakValue) peakValue = val;
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// _samples[ i ] = val * fAmplification;
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// }
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// if (peakValue > fPeakSmoothValue) {
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// fPeakSmoothValue = peakValue;
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// }
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// if (peakValue < fPeakSmoothValue) {
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// fPeakSmoothValue = fPeakSmoothValue * fPeakSmoothing + peakValue * (1 - fPeakSmoothing);
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// }
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// fAmplification = 1.0f / fPeakSmoothValue;
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// } else {
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// for (int i = 0; i < FFT_SIZE; i++)
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// {
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// static const float scaling = 1.0f / (float)FFT_SIZE;
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// _samples[i] = 2.0f * sqrtf(out[i].r * out[i].r + out[i].i * out[i].i) * scaling * fAmplification;
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// }
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// }
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// return true;
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// }
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// bool FFT_GetFFT( float * _samples )
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// {
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// kiss_fft_cpx out[ FFT_SIZE + 1 ];
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// kiss_fftr( fftcfg, sampleBuf, out );
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// // TODO: make it an option?
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// bool bPeakNormalization = true;
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// if (bPeakNormalization) {
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// float peakValue = fPeakMinValue;
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// for ( int i = 0; i < FFT_SIZE; i++ )
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// {
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// float val = 2.0f * sqrtf(out[i].r * out[i].r + out[i].i * out[i].i);
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// if (val > peakValue) peakValue = val;
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// _samples[ i ] = val * fAmplification;
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// }
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// if (peakValue > fPeakSmoothValue) {
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// fPeakSmoothValue = peakValue;
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// }
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// if (peakValue < fPeakSmoothValue) {
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// fPeakSmoothValue = fPeakSmoothValue * fPeakSmoothing + peakValue * (1 - fPeakSmoothing);
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// }
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// fAmplification = 1.0f / fPeakSmoothValue;
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// } else {
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// for (int i = 0; i < FFT_SIZE; i++)
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// {
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// static const float scaling = 1.0f / (float)FFT_SIZE;
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// _samples[i] = 2.0f * sqrtf(out[i].r * out[i].r + out[i].i * out[i].i) * scaling * fAmplification;
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// }
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// }
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// float fFFTSmoothingFactor = 0.9;
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// for ( int i = 0; i < FFT_SIZE; i++ )
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// {
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// _samples[i] = _samples[i] * fFFTSmoothingFactor + (1 - fFFTSmoothingFactor) * _samples[i];
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// }
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// return true;
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// }
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double tic_api_fft(tic_mem* memory, s32 freq)
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{