Window functions

Window functions generation. More...

Enumerations
enum	WindowTypedef { WINDOW_HANN , WINDOW_HAMMING , WINDOW_BLACKMAN }
	Window function types. More...

Functions
int32_t	Window_Init (float32_t *pDst, uint32_t len, WindowTypedef type)
	Generate a window function.
void	cosine_sum_window_create (float32_t *pDst, uint32_t len, float64_t a0, float64_t a1, float64_t a2)
	Helper function to create cosine-sum windows.

Detailed Description

Window functions generation.

A lot of different window have been developed and tested in DSP, but common choice is between Hanning, Hamming, Blackman and Flat-Top (even if many others are available).

• https://github.com/ARM-software/CMSIS_5/issues/217

Enumeration Type Documentation

WindowTypedef

enum WindowTypedef

Window function types.

Enumerator
WINDOW_HANN	Hann (Hanning) window
WINDOW_HAMMING	Hamming window
WINDOW_BLACKMAN	Blackman window

Function Documentation

Window_Init()

int32_t Window_Init	(	float32_t *	pDst,
		uint32_t	len,
		WindowTypedef	type
	)

Generate a window function.

Parameters

*pDst	points to the output buffer.
len	window length.
type	window type.

Returns

0 if successful or -1 if there is an error.