为实现本文的目的，我们假定用户的声卡中没有硬件midi波表合成器，并因此而使用了软件合成器。

For the purposes of this article, we assume the user does not have a hardware MIDI wave-table synthesizer in the sound card, and, therefore, a software synthesizer was used.

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然后屏幕阅读器利用专门的文本到语音转化硬件、软件语音合成器、盲文显示，或其他组合提出信息。

The screen reader then renders that information using specialized text-to-speech hardware, software speech synthesizers, Braille displays, or some combination thereof.

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主要介绍该合成器的构成及关键部件电路，并阐述了单片机控制系统的硬件结构及软件设计方法。

In this paper mainly describes the synthesizer and its key circuit, also the hardware structure of single chip microcomputer controlling system and design method of software.

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