为了改善广义旁瓣抵消(GSC)语音增强方法的性能,提出了一种带有泄漏约束的判决反馈旁瓣抵消(LCDF-GSC)方法.采用DF-GSC方法以解决GSC对波达方向敏感的问题,在代价函数中引入泄漏因子,以此改善语音失真的问题,而这种问题是由于噪声参考信号中含有语音成份造成的.试验结果表明,尽管经过LCDF-GSC处理后的语音信号信噪比要略低于DF-GSC,IS测度表明这时前者的语音信号失真度要小于后者.MOS分也表明LCDF-GSC方法要优于DF-GSC和单通道Weiner滤波算法. In order to improve the performance of generalized sidelobe cancellation (GSC) speech enhancement method, a decision feedback sidelobe cancellation (LCDF-GSC) method with leakage constraint is proposed. The DF-GSC method is used to solve the problem that GSC is sensitive to the direction of arrival Problem, the introduction of the cost function in the leakage factor, in order to improve the problem of speech distortion, and this problem is due to the noise component of the reference signal contains speech caused by the test results show that although after the LCDF-GSC processed signal noise Which is slightly lower than that of DF-GSC. The IS measurement shows that the former has less distortion than the latter, and the MOS scores also show that LCDF-GSC is superior to DF-GSC and single-channel Weiner filtering.