CMSIS-DSP: arm_fir_interpolate_instance_q31 Struct Reference

| CMSIS-DSP Version 1.4.7 CMSIS DSP Software Library

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arm_fir_interpolate_instance_q31 Struct Reference

Instance structure for the Q31 FIR interpolator.

## Data Fields

uint8_t | L
uint16_t | phaseLength
q31_t * | pCoeffs
q31_t * | pState

## Field Documentation

uint8_t arm_fir_interpolate_instance_q31::L

upsample factor.

Referenced by arm_fir_interpolate_init_q31(), and arm_fir_interpolate_q31().

q31_t* arm_fir_interpolate_instance_q31::pCoeffs

points to the coefficient array. The array is of length L*phaseLength.

Referenced by arm_fir_interpolate_init_q31(), and arm_fir_interpolate_q31().

uint16_t arm_fir_interpolate_instance_q31::phaseLength

length of each polyphase filter component.

Referenced by arm_fir_interpolate_init_q31(), and arm_fir_interpolate_q31().

q31_t* arm_fir_interpolate_instance_q31::pState

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

Referenced by arm_fir_interpolate_init_q31(), and arm_fir_interpolate_q31().