When this system needs to playback, data is gotten from RAM, and it transforms into the analog signal through the D/A switch. Moreover through the power amplifier, the voice signal can be recovered.
在需要回放时，再由单片机控制提取RAM中的数据，通过D/A转换器将数字信号转换为模拟信号，通过功率放大器将语音信号还原后回放出来。
BUX series power amplifier is a section high-performance power amplifier, in order to satisfy the requirements of high voice.
BUX系列功放是一款高性能的功率放大器，为满足对声音要求极高的系统所设计的。
And for people who use their voices a lot, like singers or professional speakers, get voice training and use an amplifier.
对于那些经常用嗓的人，如歌手，职业演讲者，要使用扩音器。
A way of controlling the voice volume in a wide range with program-control amplifier, the hardware circuit and constructing method of software are given.
采用程控放大器对音量进行宽范围控制，提供了具体硬件电路并指出了软件构成方法。
A way of controlling the voice volume in a wide range with program-control amplifier, the hardware circuit and constructing method of software are given.
采用程控放大器对音量进行宽范围控制，提供了具体硬件电路并指出了软件构成方法。
应用推荐