arm_lms_norm_instance_q15 Struct Reference

Instance structure for the Q15 normalized LMS filter.

Data Fields

uint16_t numTaps
 
q15_tpState
 
q15_tpCoeffs
 
q15_t mu
 
uint8_t postShift
 
q15_trecipTable
 
q15_t energy
 
q15_t x0
 

Field Documentation

q15_t arm_lms_norm_instance_q15::energy

saves previous frame energy.

Referenced by arm_lms_norm_init_q15(), and arm_lms_norm_q15().

q15_t arm_lms_norm_instance_q15::mu

step size that controls filter coefficient updates.

Referenced by arm_lms_norm_init_q15(), and arm_lms_norm_q15().

uint16_t arm_lms_norm_instance_q15::numTaps

Number of coefficients in the filter.

Referenced by arm_lms_norm_init_q15(), and arm_lms_norm_q15().

q15_t* arm_lms_norm_instance_q15::pCoeffs

points to the coefficient array. The array is of length numTaps.

Referenced by arm_lms_norm_init_q15(), and arm_lms_norm_q15().

uint8_t arm_lms_norm_instance_q15::postShift

bit shift applied to coefficients.

Referenced by arm_lms_norm_init_q15(), and arm_lms_norm_q15().

q15_t* arm_lms_norm_instance_q15::pState

points to the state variable array. The array is of length numTaps+blockSize-1.

Referenced by arm_lms_norm_init_q15(), and arm_lms_norm_q15().

q15_t* arm_lms_norm_instance_q15::recipTable

Points to the reciprocal initial value table.

Referenced by arm_lms_norm_init_q15(), and arm_lms_norm_q15().

q15_t arm_lms_norm_instance_q15::x0

saves previous input sample.

Referenced by arm_lms_norm_init_q15(), and arm_lms_norm_q15().