# arm_fir_instance_f32 Struct Reference

CMSIS-DSP: arm_fir_instance_f32 Struct Reference

| CMSIS-DSP Version 1.5.2 CMSIS DSP Software Library

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arm_fir_instance_f32 Struct Reference

Instance structure for the floating-point FIR filter. More...

## Data Fields

uint16_t | numTaps
float32_t * | pState
float32_t * | pCoeffs

## Description

Examples:
  arm_fir_example_f32.c, and arm_signal_converge_example_f32.c.

## Field Documentation

uint16_t arm_fir_instance_f32::numTaps

number of filter coefficients in the filter.

Referenced by arm_fir_f32(), and arm_fir_init_f32().

float32_t* arm_fir_instance_f32::pCoeffs

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

Referenced by arm_fir_f32(), and arm_fir_init_f32().

float32_t* arm_fir_instance_f32::pState

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

Referenced by arm_fir_f32(), and arm_fir_init_f32().