An improved method of endpoints detection based on energy-frequency-value

It is very important to detect the speech endpoints accurately in speech recognition. This paper presents an improved method of endpoints detection based on the product of energy and frequency. The method uses energy-frequency-value as threshold to detect endpoints of speech signal, and induces the upper limit of length threshold and the lower limit of length threshold of speech signal, so that the improved method can detect speech endpoints by adapting the threshold to the strength of background noise automatically. The simulation results show that the method is more accurate and more anti-noise than the traditional one based on energy and frequency