CMSIS-DSP
Version 1.10.0
CMSIS DSP Software Library
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Instance structure for the Q15 normalized LMS filter.
Data Fields | |
uint16_t | numTaps |
q15_t * | pState |
q15_t * | pCoeffs |
q15_t | mu |
uint8_t | postShift |
const q15_t * | recipTable |
q15_t | energy |
q15_t | x0 |
q15_t energy |
saves previous frame energy.
q15_t mu |
step size that controls filter coefficient updates.
uint16_t numTaps |
Number of coefficients in the filter.
q15_t* pCoeffs |
points to the coefficient array. The array is of length numTaps.
uint8_t postShift |
bit shift applied to coefficients.
q15_t* pState |
points to the state variable array. The array is of length numTaps+blockSize-1.
const q15_t* recipTable |
Points to the reciprocal initial value table.
q15_t x0 |
saves previous input sample.