关键词: 有声/无声检测, 语音增强, 四阶统计量

Abstract: Speech/non-speech detection is a key factor for speech enhancement and recognition.This paper proposes a robust speech/non-speech detection method based on the forth order statistics.Taking advantage of the super-Gaussian property of the speech’s amplitude spectrum，the proposed method calculates the forth order statistics to measure the non-Gaussianity of the amplitude spectrum of each speech frame.Combining with the energy，a simple threshold classifier is used to distinguish whether the speech frame is speech or non-speech.Computer simulations show that the proposed method is effective.

Key words: speech/non-speech detection, speech enhancement, the forth order statistics