Real-Time Endpoint Detection Algorithm Combining Time-Frequency Domain

Time-domain endpoint detection algorithm is simple and can be implemented easily, but has a poor performance under the background of noise environment. Frequency-domain endpoint detection algorithm is robust in noise proof, but has a higher computational complexity and longer running period. According to the features of above algorithms, This paper proposed an endpoint detection algorithm which combines time domain with frequency domain, which takes a real-time multi-stage detection on speech from telephone channel using the frequency spectrum entropy and the Short-term Energy Zero Value as the decision-making parameters. The simulation results show that this method could detect the starting and ending points of speech signal exactly, and meets the need of real-time processing.