1 /*
2  * Copyright (C) 2015-2020 Alibaba Group Holding Limited
3  */
4 #ifndef __SPEECH_3MIC_NS_H__
5 #define __SPEECH_3MIC_NS_H__
6 
7 #include <stdint.h>
8 
9 #ifdef __cplusplus
10 extern "C" {
11 #endif
12 
13 typedef struct {
14     int32_t     bypass;
15 	int32_t     blend_en;
16 	int32_t     authen_en;
17     float     	delay_tapsM;            // MIC L/R delay samples. 0: 适用于麦克距离为<2cm; 1: 适用于麦克距离为2cm左右; 2: 适用于麦克距离为4cm左右
18     int32_t     delay_tapsS;
19 	float       denoise_dB;
20     // float       coefH[2][5];            // {{a0,a1,a2,a3,a4},{b0,b1,b2,b3,b4}}
21     // float       coefL[2][5];            // {{a0,a1,a2,a3,a4},{b0,b1,b2,b3,b4}}
22 	int32_t     crossover_freq;
23     int32_t     freq_smooth_enable;     // 1: 频域滤波打开; 0: 频域滤波关闭; 默认打开
24     int32_t     wnr_enable;             // wind noise reduction enable
25 } Speech3MicNsConfig;
26 
27 struct Speech3MicNsState_;
28 
29 typedef struct Speech3MicNsState_ Speech3MicNsState;
30 
31 Speech3MicNsState *speech_3mic_ns_create(int32_t sample_rate, int32_t frame_size, const Speech3MicNsConfig *cfg);
32 
33 int32_t speech_3mic_ns_destroy(Speech3MicNsState *st);
34 
35 int32_t speech_3mic_ns_set_config(Speech3MicNsState *st, const Speech3MicNsConfig *cfg);
36 
37 int32_t speech_3mic_ns_process(Speech3MicNsState *st, short *pcm_buf, int32_t pcm_len, short *out_buf);
38 
39 #ifdef __cplusplus
40 }
41 #endif
42 
43 #endif
44