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CMSIS-DSP
Version 1.5.2
CMSIS DSP Software Library
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Instance structure for the Q31 normalized LMS filter.
Data Fields | |
| uint16_t | numTaps |
| q31_t * | pState |
| q31_t * | pCoeffs |
| q31_t | mu |
| uint8_t | postShift |
| q31_t * | recipTable |
| q31_t | energy |
| q31_t | x0 |
| q31_t arm_lms_norm_instance_q31::energy |
saves previous frame energy.
Referenced by arm_lms_norm_init_q31(), and arm_lms_norm_q31().
| q31_t arm_lms_norm_instance_q31::mu |
step size that controls filter coefficient updates.
Referenced by arm_lms_norm_init_q31(), and arm_lms_norm_q31().
| uint16_t arm_lms_norm_instance_q31::numTaps |
number of coefficients in the filter.
Referenced by arm_lms_norm_init_q31(), and arm_lms_norm_q31().
| q31_t* arm_lms_norm_instance_q31::pCoeffs |
points to the coefficient array. The array is of length numTaps.
Referenced by arm_lms_norm_init_q31(), and arm_lms_norm_q31().
| uint8_t arm_lms_norm_instance_q31::postShift |
bit shift applied to coefficients.
Referenced by arm_lms_norm_init_q31(), and arm_lms_norm_q31().
| q31_t* arm_lms_norm_instance_q31::pState |
points to the state variable array. The array is of length numTaps+blockSize-1.
Referenced by arm_lms_norm_init_q31(), and arm_lms_norm_q31().
| q31_t* arm_lms_norm_instance_q31::recipTable |
points to the reciprocal initial value table.
Referenced by arm_lms_norm_init_q31(), and arm_lms_norm_q31().
| q31_t arm_lms_norm_instance_q31::x0 |
saves previous input sample.
Referenced by arm_lms_norm_init_q31(), and arm_lms_norm_q31().