关键词: 时间延迟, 噪声特性, 分数低阶协方差, 声门脉冲, 线性预测

Abstract: This paper proposes a new method of time-delay estimation under the complicated room acoustic environment including most of impulse noise.Based on the characteristic of speech，the time-delay can be estimated by computing the fractional low-order covariance after the extraction of the glottal pulse information.The results show that the method takes on the high performance with the strong anti-reverberant and anti-noise，and is suitable for the speech source location in room.

Key words: time-delay, noise characteristic, Fractional Low-Order Covariance（FLOC）, glottal pulses, Linear Prediction（LPC）