| CMSIS-DSP Verison 1.4.1 CMSIS DSP Software Library

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arm_iir_lattice_instance_q31 Struct Reference

Instance structure for the Q31 IIR lattice filter.

## Data Fields
uint16_t | numStages
q31_t * | pState
q31_t * | pkCoeffs
q31_t * | pvCoeffs

## Field Documentation

uint16_t arm_iir_lattice_instance_q31::numStages

number of stages in the filter.

Referenced by arm_iir_lattice_init_q31(), and arm_iir_lattice_q31().

q31_t* arm_iir_lattice_instance_q31::pkCoeffs

points to the reflection coefficient array. The array is of length numStages.

Referenced by arm_iir_lattice_init_q31(), and arm_iir_lattice_q31().

q31_t* arm_iir_lattice_instance_q31::pState

points to the state variable array. The array is of length numStages+blockSize.

Referenced by arm_iir_lattice_init_q31(), and arm_iir_lattice_q31().

q31_t* arm_iir_lattice_instance_q31::pvCoeffs

points to the ladder coefficient array. The array is of length numStages+1.

Referenced by arm_iir_lattice_init_q31(), and arm_iir_lattice_q31().