基于数字信号处理实现VOX技术

摘要

介绍一种用数字方式实现VOX功能的方法.根据语音信号的特征及短时分析技术,利用语音信号能量和过零率相结合检测方法,可有效进行有声/无声判断.根据所述检测原理和实现方法,进行了不同信噪比条件下的仿真分析.经过实际应用测试,该系统易于实现,实时性好.%This paper introduces a method to realizate VOX digitally. Based on voice signal character and short-time speech signal analysis and using the energy and pass-zero probability to detect voice in noise. According to the referred detecting theory and implementations, simulation has been done at various SNR. After real testing,the system which is good for estimating the speech/silence can run real-time and realize easily