FFT4

Fast Fourier Transform with four samples.

void FFT4(XMVECTOR* pReal, XMVECTOR* pImaginary, const size_t uCount=1);

Parameters

[in, out] Real components of the FFT. Must have as least uCount elements.

[in, out] Imaginary components of the FFT. Must have at least uCount elements.

[in] Number of FFT iterations.

All buffer parameters must be 16-byte aligned. Audio data must be 32-bit float mono.

This performs a split-radix FFT, radix 4 and 2.

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