FFT

Fast Fourier Transform with an arbitrary number of samples.

Syntax

void FFT(  
         XMVECTOR* __restrict pReal,  
         XMVECTOR* __restrict pImaginary,  
         const XMVECTOR* __restrict pUnityTable,  
         const size_t uLength,  
         const size_t uCount= 1  
)  

Parameters

pReal   _Inout_updates_((uLength * uCount) / 4)
Type: XMVECTOR* __restrict Real components of the FFT. Must have at least (uLength × uCount) ÷ 4 elements. pImaginary   _Inout_updates_((uLength * uCount) / 4)
Type: XMVECTOR* __restrict Imaginary components of the FFT. Must have at least (uLength × uCount) ÷ 4 elements. pUnityTable   _In_reads_(uLength * uCount)
Type: XMVECTOR* __restrict Unity table to be used by the FFT. Must have at least uLength × uCount XMVECTORs. For more information, see FFTInitializeUnityTable. uLength   _In_
Type: size_t FFT length in samples. uLength must be a power of two and greater than 16. uCount   _In_
Type: size_t Number of FFT iterations.

Return value

Type: void None.

Remarks

For FFTs with a number of samples that are less than or equal to 16, use FFT16, FFT8, or FFT4. All buffer parameters must be 16-byte aligned. Audio data must be FLOAT32 mono.

Requirements

Header: xdsp.h Supported platforms: XBOX One family consoles and XBOX Series consoles

Chat API reference

Developer kit only API reference

Graphics API reference

Input API reference

Lighting API reference

Networking API reference

XBOX PC remote iteration API reference

System API reference

Tools API reference

Windows device portal REST API reference

XBOX services API reference

MicrosoftGame.config reference

Additional pages

Reference

Syntax

Parameters

Return value

Remarks

Requirements

See also

​Syntax

​Parameters

​Return value

​Remarks

​Requirements

​See also

Syntax

Parameters

Return value

Remarks

Requirements

See also