Abstract: The paper puts forward a simple and practical joint detection techniques, combines double-thresholds method based on energy and zero-crossing rate with subband energy method based on wavelet transform skillfully for voice signal endpoints detection, makes the best of double-thresholds method’s simple algorithm, good real-time, high accuracy rate and wavelet-zone energy’s good discrimination function from white Gaussian noise. Simulation result shows that the new algorithm can improve the endpoints detection accuracy rate of the detection system in the noise environment.

Key words: double-thresholds method, endpoints detection, subband energy, joint detection, signal to noise ratio