CMSIS-DSP: arm_fir_sparse_instance_q15 Struct Reference

| CMSIS-DSP Version 1.5.2 CMSIS DSP Software Library

- Main Page
- Usage and Description
- Reference

- Data Structures
- Data Fields

All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
Data Fields
arm_fir_sparse_instance_q15 Struct Reference

Instance structure for the Q15 sparse FIR filter.

## Data Fields
uint16_t | numTaps
uint16_t | stateIndex
q15_t * | pState
q15_t * | pCoeffs
uint16_t | maxDelay
int32_t * | pTapDelay

## Field Documentation

uint16_t arm_fir_sparse_instance_q15::maxDelay

maximum offset specified by the pTapDelay array.

Referenced by arm_fir_sparse_init_q15(), and arm_fir_sparse_q15().

uint16_t arm_fir_sparse_instance_q15::numTaps

number of coefficients in the filter.

Referenced by arm_fir_sparse_init_q15(), and arm_fir_sparse_q15().

q15_t* arm_fir_sparse_instance_q15::pCoeffs

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

Referenced by arm_fir_sparse_init_q15(), and arm_fir_sparse_q15().

q15_t* arm_fir_sparse_instance_q15::pState

points to the state buffer array. The array is of length maxDelay+blockSize-1.

Referenced by arm_fir_sparse_init_q15(), and arm_fir_sparse_q15().

int32_t* arm_fir_sparse_instance_q15::pTapDelay

points to the array of delay values. The array is of length numTaps.

Referenced by arm_fir_sparse_init_q15(), and arm_fir_sparse_q15().

uint16_t arm_fir_sparse_instance_q15::stateIndex

state buffer index. Points to the oldest sample in the state buffer.

Referenced by arm_fir_sparse_init_q15(), and arm_fir_sparse_q15().