Instance structure for the Q31 normalized LMS filter. More...

#include <arm_math.h>

Data Fields
uint16_t	numTaps
	number of coefficients in the filter.
q31_t *	pState
	points to the state variable array.
q31_t *	pCoeffs
	points to the coefficient array.
q31_t	mu
	step size that controls filter coefficient updates.
uint8_t	postShift
	bit shift applied to coefficients.
q31_t *	recipTable
	points to the reciprocal initial value table.
q31_t	energy
	saves previous frame energy.
q31_t	x0
	saves previous input sample.

Detailed Description

Instance structure for the Q31 normalized LMS filter.

Definition at line 4169 of file arm_math.h.

Field Documentation

saves previous frame energy.

Definition at line 4177 of file arm_math.h.

q31_t mu

step size that controls filter coefficient updates.

Definition at line 4174 of file arm_math.h.

uint16_t numTaps

number of coefficients in the filter.

Definition at line 4171 of file arm_math.h.

points to the coefficient array.

The array is of length numTaps.

Definition at line 4173 of file arm_math.h.

bit shift applied to coefficients.

Definition at line 4175 of file arm_math.h.

q31_t* pState

points to the state variable array.

The array is of length numTaps+blockSize-1.

Definition at line 4172 of file arm_math.h.

points to the reciprocal initial value table.

Definition at line 4176 of file arm_math.h.

q31_t x0

saves previous input sample.

Definition at line 4178 of file arm_math.h.