arm_biquad_cas_df1_32x64_ins_q31 Struct Reference

Instance structure for the high precision Q31 Biquad cascade filter. More...

#include <arm_math.h>

Data Fields
uint8_t	numStages
q63_t *	pState
q31_t *	pCoeffs
uint8_t	postShift

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Detailed Description

Instance structure for the high precision Q31 Biquad cascade filter.

Examples:

arm_graphic_equalizer_example_q31.c.

Definition at line 3356 of file arm_math.h.

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Field Documentation

uint8_t arm_biquad_cas_df1_32x64_ins_q31::numStages

number of 2nd order stages in the filter. Overall order is 2*numStages.

Definition at line 3358 of file arm_math.h.

q63_t* arm_biquad_cas_df1_32x64_ins_q31::pState

points to the array of state coefficients. The array is of length 4*numStages.

Definition at line 3359 of file arm_math.h.

q31_t* arm_biquad_cas_df1_32x64_ins_q31::pCoeffs

points to the array of coefficients. The array is of length 5*numStages.

Definition at line 3360 of file arm_math.h.

uint8_t arm_biquad_cas_df1_32x64_ins_q31::postShift

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

Definition at line 3361 of file arm_math.h.

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The documentation for this struct was generated from the following file:

• arm_math.h