CMSIS DSP Library from CMSIS 2.0. See http://www.onarm.com/cmsis/ for full details

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arm_biquad_casd_df1_inst_q15 Struct Reference

arm_biquad_casd_df1_inst_q15 Struct Reference

Instance structure for the Q15 Biquad cascade filter. More...

#include <arm_math.h>

Data Fields

int8_t numStages
 number of 2nd order stages in the filter.
q15_t * pState
 Points to the array of state coefficients.
q15_t * pCoeffs
 Points to the array of coefficients.
int8_t postShift
 Additional shift, in bits, applied to each output sample.

Detailed Description

Instance structure for the Q15 Biquad cascade filter.

Definition at line 1110 of file arm_math.h.


Field Documentation

int8_t numStages

number of 2nd order stages in the filter.

Overall order is 2*numStages.

Definition at line 1112 of file arm_math.h.

q15_t* pCoeffs

Points to the array of coefficients.

The array is of length 5*numStages.

Definition at line 1114 of file arm_math.h.

int8_t postShift

Additional shift, in bits, applied to each output sample.

Definition at line 1115 of file arm_math.h.

q15_t* pState

Points to the array of state coefficients.

The array is of length 4*numStages.

Definition at line 1113 of file arm_math.h.