Method createInterpolatedFrame

src/internal/src/FFTFrame.cpp:31–47

}

std::unique_ptr<FFTFrame> FFTFrame::createInterpolatedFrame(const FFTFrame & frame1, const FFTFrame & frame2, double x)
{
    std::unique_ptr<FFTFrame> newFrame(new FFTFrame(frame1.fftSize()));

    newFrame->interpolateFrequencyComponents(frame1, frame2, x);

    // In the time-domain, the 2nd half of the response must be zero, to avoid circular convolution aliasing...
    int fftSize = newFrame->fftSize();
    AudioFloatArray buffer(fftSize);
    newFrame->computeInverseFFT(buffer.data());
    buffer.zeroRange(fftSize / 2, fftSize);

    // Put back into frequency domain.
    newFrame->computeForwardFFT(buffer.data());

    return newFrame;
}

void FFTFrame::interpolateFrequencyComponents(const FFTFrame & frame1, const FFTFrame & frame2, double interp)
{