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arm_biquad_casd_df1_inst_q31 Struct Reference
Instance structure for the Q31 Biquad cascade filter. More...
#include <arm_math.h>
Data Fields | |
| uint32_t | numStages |
| number of 2nd order stages in the filter. | |
| q31_t * | pState |
| Points to the array of state coefficients. | |
| q31_t * | pCoeffs |
| Points to the array of coefficients. | |
| uint8_t | postShift |
| Additional shift, in bits, applied to each output sample. | |
Detailed Description
Instance structure for the Q31 Biquad cascade filter.
Definition at line 1212 of file arm_math.h.
Field Documentation
| uint32_t numStages |
number of 2nd order stages in the filter.
Overall order is 2*numStages.
Definition at line 1214 of file arm_math.h.
| q31_t* pCoeffs |
Points to the array of coefficients.
The array is of length 5*numStages.
Definition at line 1216 of file arm_math.h.
| uint8_t postShift |
Additional shift, in bits, applied to each output sample.
Definition at line 1217 of file arm_math.h.
| q31_t* pState |
Points to the array of state coefficients.
The array is of length 4*numStages.
Definition at line 1215 of file arm_math.h.
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