语音处理技术是一门新兴的技术，它不仅包括语音的录制和播放，还涉及语音的压缩编码和解码，语音的识别等各种处理技术。以往做这方面的设计，一般有两个途径：一种方案是单片机扩展设计，另一种就是借助于专门的语音处理芯片。普通的单片机往往不能实现这么复杂的过程和算法，即使勉强实现也要加很多的外围器件。专门的语音处理芯片也比较多，如ISD 系列、PM50 系列等，但是专门的语音处理芯片功能比较单一，想在语音之外的其他方面应用基本是不可能的。-Voice processing technology is an emerging technology, which includes not only the voice record and playback, but also the compression of voice encoding and decoding, voice recognition and other processing techniques. The past, so this design, in general there are two ways: expansion of a program is single-chip design, while another is through the use of specialized voice processing chips. Single-chip is often not an ordinary course of such a complex and algorithms, even if we manage to increase the achievement of many of the peripheral device. Specialized voice processing chips have more, such as the ISD Series, PM50 series, but the specific functions of voice processing chips compare a single, would like to voice other than the basic application is impossible.