Edge AI Add-on API 2.3.0
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nrf_dsp_zcr.h
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1/*
2 * Copyright (c) 2026 Nordic Semiconductor ASA
3 *
4 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
5 */
15#ifndef _NRF_DSP_STAT_ZCR_FUNCTIONS_H_
16#define _NRF_DSP_STAT_ZCR_FUNCTIONS_H_
17
18#include <nrf_edgeai/dsp/nrf_dsp_types.h>
19
20#ifdef __cplusplus
21extern "C" {
22#endif
23
32flt32_t nrf_dsp_zcr_f32(const flt32_t *p_input, uint16_t num);
33
44flt32_t nrf_dsp_zcr_f32_s(const flt32_t *p_input, uint16_t num, size32_t stride);
45
55int16_t nrf_dsp_zcr_i8(const int8_t *p_input, uint16_t num);
56
68int16_t nrf_dsp_zcr_i8_s(const int8_t *p_input, uint16_t num, size32_t stride);
69
79int16_t nrf_dsp_zcr_i16(const int16_t *p_input, uint16_t num);
80
92int16_t nrf_dsp_zcr_i16_s(const int16_t *p_input, uint16_t num, size32_t stride);
93
103int16_t nrf_dsp_zcr_i32(const int32_t *p_input, uint16_t num);
104
116int16_t nrf_dsp_zcr_i32_s(const int32_t *p_input, uint16_t num, size32_t stride);
117
118#ifdef __cplusplus
119}
120#endif
121
122#endif /* _NRF_DSP_STAT_ZCR_FUNCTIONS_H_ */
123
nrf_dsp_zcr_f32_s
flt32_t nrf_dsp_zcr_f32_s(const flt32_t *p_input, uint16_t num, size32_t stride)
Counts Zero-crossing rate of a floating-point vector ​​using values ​​in increments of 'stride'.
nrf_dsp_zcr_i32_s
int16_t nrf_dsp_zcr_i32_s(const int32_t *p_input, uint16_t num, size32_t stride)
Counts Zero-crossing rate of a INT32 fixed-point vector ​​using values ​​in increments of 'stride'.
nrf_dsp_zcr_i8
int16_t nrf_dsp_zcr_i8(const int8_t *p_input, uint16_t num)
Counts Zero-crossing rate of a INT8 fixed-point vector.
nrf_dsp_zcr_i16
int16_t nrf_dsp_zcr_i16(const int16_t *p_input, uint16_t num)
Counts Zero-crossing rate of a INT16 fixed-point vector.
nrf_dsp_zcr_i16_s
int16_t nrf_dsp_zcr_i16_s(const int16_t *p_input, uint16_t num, size32_t stride)
Counts Zero-crossing rate of a INT16 fixed-point vector ​​using values ​​in increments of 'stride'.
nrf_dsp_zcr_i32
int16_t nrf_dsp_zcr_i32(const int32_t *p_input, uint16_t num)
Counts Zero-crossing rate of a INT32 fixed-point vector.
nrf_dsp_zcr_f32
flt32_t nrf_dsp_zcr_f32(const flt32_t *p_input, uint16_t num)
Counts Zero-crossing rate of a floating-point vector.
nrf_dsp_zcr_i8_s
int16_t nrf_dsp_zcr_i8_s(const int8_t *p_input, uint16_t num, size32_t stride)
Counts Zero-crossing rate of a INT8 fixed-point vector ​​using values ​​in increments of 'stride'.
nrf_dsp_types.h
size32_t
size_t size32_t
Architecture 32-bit size_t type definition.
Definition nrf_edgeai_ctypes.h:31
flt32_t
float flt32_t
32-bit floating-point type definition.
Definition nrf_edgeai_ctypes.h:21