减谱法在语音增强中的应用

语音信号在传输过程中不可避免地会受到周围环境的影响。如何在语音受到干扰的条件下，在接收端保证语音可懂度和清晰度是目前语音通信面临的一个重要问题。首先介绍了影响语音通信的常见的几种噪声，通过对几种语音增强方法的介绍和对比，并结合语音干扰效果评估方法，对减谱法语音增强方法进行详细分析，并结合实际的标准语音库中的语音文件，对结果加以验证，实现了在干扰信号比较大的情况下，提高了语音的可懂度和清晰试。进而得出了较为有效的语音增强效果。可作为提高音质试验、训练中的参考依据。

Application of Spectrum Subtraction for the Speech Enhancement

Speech signal is inevitably jammed by surrounding environment noises in course of transmis- sion. How to ensure the understandableness and dearness of Speech in receive terminal is an important problem in speech communications. This paper introduces several common noises affecting speech communications, then several methods of speech enhancement are introduced. Using the method of speech communication jamming effectiveness evaluation, the paper analysed the use of spectrum subtraction to the speech enhancement, effect iveness of spectrum subtraction method is validated by the method of speech file in standard creasing timbre and for training.