【摘要】 利用TMS320VC54x系列DSP芯片功耗低、运算速度快等特点实现了一种谱熵语音检测方法,该方法分别计算输入信号高频段谱熵H1与低频段谱熵H2,如果H1/H2<1,则输入信号为语音信号,如果H1/H2≈1,则输入信号为噪音信号。实验表明:该方法实现简单,实时性好,语音检测正确率高,具有较好的应用价值,可广泛应用于各种指挥调度系统中多种通信系统之间的语音检测。更多还原

【Abstract】 Be making use of DSP’s low power consumption and fast calculation, a method for voice detection based on TMS320VC54x and spectral entropy is realized. The method calculates respectively the high frequency band’s spectral entropy (H1) and the low frequency band’s spectral entropy (H2) of input signal. If H1/H2<1, the input is voice signal, if H1/H2≈1, the input is noise signal. The experiment result indicates that this method is simple in hardware realization and real-time, and correct in voice detection, and also has good application value. The method can be widely applied in voice detection of some communication systems in the command and dispatch system.更多还原