在本文中,主要讲了在语音识别和语音合成之前我们所要做的主要工作，包括去噪,预加重,端点检测,特征参数提取等技术.-In this article, the main speaker in the speech recognition and speech synthesis to be done before we have major work, including de-noising, pre-emphasis, endpoint detection, feature extraction

语音的预加重和去加重，进行语音的前期处理，减少噪声。-Voice of the pre-emphasis and de-emphasis, voice of the pre-processing to reduce noise.

预加重和去加重是语音处理必不可少的环节，得到纯净语音-Pre-emphasis and de-emphasis is essential for speech processing areas, are pure voice

在调频系统中人们普遍采用了一种叫做预加重和去加重措施，其中心思想是利用信号特性和噪声特性的差别来有效地对信号进行处理。-FM system in widespread use a technique called pre-emphasis and de-emphasis of measures, the central idea is to use the difference between the signal and noise characteristics to efficiently