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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。
Using TMS320VC54x series of DSP chips, low power consumption and fast operation speed, a spectrum entropy detection method is proposed. This method calculates the spectral entropy H1 of the high frequency band and the spectral entropy H2 of the low frequency band respectively. If H1 / H2 <1, The input signal is a speech signal. If H1 / H2≈1, the input signal is a noise signal. Experiments show that this method is simple, real-time, speech detection accuracy is high, and has good application value, which can be widely used in speech detection among various communication systems in a variety of command and dispatch systems.