摘要
嵌入式声控拨号系统中的端点检测算法的改进,采用信号与平均幅度值的差值AVG(E)和代替信号幅度平方和,作为短时信号能量,以消除零漂移并计算简化。同时对端点检测判决阈值进行自适应更新,增加对最小值的判断,并克服开始阶段的纯零幅度信号。
The end point detection algorithm improvement in embedded voice dialer system adopts sum of signal and AVG （E） to replace signal amplitude square sum as the short-time signal energy. Therefore the zero-shifting is eliminated and the calculation is simplified. At the same time, the self-adjusting update is carried out for the judge threshold value of end point detection. Add judging for the minimum and overcome the pure zero amplitude signal in the start phase.
出处
《兵工自动化》
2007年第2期54-55,共2页
Ordnance Industry Automation
关键词
端点检测
零漂移
语音命令
End point detection
Zero drift
Sound command
