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// |
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// JL_vad.h |
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// Test |
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// |
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// Created by DFung on 2018/2/28. |
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// Copyright © 2018年 DFung. All rights reserved. |
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// |
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#ifndef JL_vad_h |
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#define JL_vad_h |
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#define CONT_AD_ADFRMSIZE 16 |
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#define DEFAULT_RADIX 12 |
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#define SMOOTH_WINDOW 4 |
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#define MIN_FIXLOG -2829416 |
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#define KWSNUM 1 //¥˝ ∂±¥ ∏ˆ ˝ |
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//typedef long long __int64; |
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typedef int int32; |
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typedef short int16; |
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typedef signed char int8; |
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typedef unsigned int uint32; |
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typedef unsigned short uint16; |
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typedef unsigned char uint8; |
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typedef long long int64; |
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typedef int32 fixed32; |
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typedef float float32; |
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struct noise_stats_s { |
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/* Smoothed power */ |
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int power[40]; |
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int max_power[40]; |
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/* Noise estimate */ |
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int noise[40]; |
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int max_noise[40]; |
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/* Signal floor estimate */ |
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int floor[40]; |
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int max_floor[40]; |
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/* Peak for temporal masking */ |
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int peak[40]; |
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int max_peak[40]; |
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int signal[40]; |
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int gain[40]; |
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char remove_noi; |
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/* Initialize it next time */ |
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uint8 undefined; |
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/* Number of items to process */ |
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uint32 num_filters; |
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/* Sum of slow peaks for VAD */ |
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int64 slow_peak_sum; |
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int64 max_slow_peak_sum; |
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/* Precomputed constants */ |
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int lambda_power; |
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int comp_lambda_power; |
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int lambda_a; |
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int comp_lambda_a; |
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int lambda_b; |
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int comp_lambda_b; |
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int lambda_t; |
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int mu_t; |
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int max_gain; |
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int inv_max_gain; |
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int smooth_scaling[2 * 4 + 3]; |
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}; |
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typedef struct noise_stats_s noise_stats_t; |
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struct htk_fe_s |
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{ |
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unsigned short pow_hist[98]; |
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noise_stats_t *noise_stats; |
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int fe_prior; |
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uint32 int_frame; |
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char int_flag; |
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unsigned char sum_cnt; |
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uint8 voice_state; |
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uint8 in_speech; |
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int16 pre_speech_frames; |
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int16 post_speech_frames; |
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int16 inout_spch[410]; |
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int fe_tmp_spch[250]; |
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int fe_fft_buf[512]; |
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int fe_mfspec[40]; |
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int cmn_sum[13]; |
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int mfcc_fifo[9][13]; |
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int *cmn_mfcc_fifo[9]; |
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//int fe_prior; |
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char speech_fifo[16]; |
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char init_speech_n; |
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char vad_cnt; |
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int buf_cep[21][13]; |
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int buf_pow[21]; |
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uint8 speech_indexw; |
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uint8 speech_indexr; |
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uint8 speech_cnt; |
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int16 sp_threshold; |
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int16 nsp_threshold; |
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}; |
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typedef struct htk_fe_s htk_fe_t; |
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/* |
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* How to use? See follow... |
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* |
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* 1、开启录音前： |
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* /--- 开启Vad ---/ |
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* int need_buf_size = vad_get_need_buf_size(); |
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* vad_hdl = malloc(need_buf_size); |
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* vad_init(vad_hdl, 10, 51); |
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* |
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* 2、结束录音后： |
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* /--- 关闭Vad ---/ |
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* free(vad_hdl); |
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* |
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* 3、录音数据回调： |
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* buf：录音数据 ，需要320Bytes！ |
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* ret：0->静音状态 1->正在说话 2->结束说话 |
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* int ret = vad_main(vad_hdl, (int*)buf); |
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*/ |
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int vad_get_need_buf_size(void); |
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int vad_init(void *p, short sp_threshold, short nsp_threshold); |
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int vad_main(void *p,int *inout_spch); |
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fixed32 fe_log_add(fixed32 x, fixed32 y); |
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fixed32 fe_log_sub(fixed32 x, fixed32 y); |
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int32 fixlog2(uint32 x); |
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int fixlog(uint32 x); |
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#endif /* JL_vad_h */
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