Instance structure for the Q15 normalized LMS filter. More...

#include <arm_math.h>

Data Fields
uint16_t	numTaps
	Number of coefficients in the filter.
q15_t *	pState
	points to the state variable array.
q15_t *	pCoeffs
	points to the coefficient array.
q15_t	mu
	step size that controls filter coefficient updates.
uint8_t	postShift
	bit shift applied to coefficients.
q15_t *	recipTable
	Points to the reciprocal initial value table.
q15_t	energy
	saves previous frame energy.
q15_t	x0
	saves previous input sample.

Detailed Description

Instance structure for the Q15 normalized LMS filter.

Definition at line 4373 of file arm_math.h.

Field Documentation

saves previous frame energy.

Definition at line 4381 of file arm_math.h.

q15_t mu

step size that controls filter coefficient updates.

Definition at line 4378 of file arm_math.h.

uint16_t numTaps

Number of coefficients in the filter.

Definition at line 4375 of file arm_math.h.

points to the coefficient array.

The array is of length numTaps.

Definition at line 4377 of file arm_math.h.

bit shift applied to coefficients.

Definition at line 4379 of file arm_math.h.

q15_t* pState

points to the state variable array.

The array is of length numTaps+blockSize-1.

Definition at line 4376 of file arm_math.h.

Points to the reciprocal initial value table.

Definition at line 4380 of file arm_math.h.

q15_t x0

saves previous input sample.

Definition at line 4382 of file arm_math.h.