语音信号增强系统设计与仿真

摘要

Speech signal enhancement is an important branch in signal processing. Aiming at the situation that speech communication has to be processed in the present of background noise and interference, the system of speech signal interference suppression is designed according to adaptive filter algorithm . At first, LMS algorithm have been derived , and the performance of adaptive filter is simulated and analyzed in the noise and interference situation. The simulation indicates that the performance of interference and noise suppression is good, speech signal has been enhanced evidently, and the design has provided theoretical foundation for hardware implementation.%在信号处理中语音增强是一个重要分支,针对语音信号不得不在噪声和干扰环境下通信的现状,采用自适应滤波算法设计了语音信号噪声和干扰抑制系统,首先对LMS算法进行了推导,并且对噪声和干扰环境下的自适应滤波器性能进行了仿真分析,仿真结果表明:该设计抑制干扰和噪声的性能较好,对语音信号的增强明显,为该系统在硬件上实现提供了理论基础.