Now waveform coding synthesis technology is one of the most important speech synthesis method, it can produce natural and articulate speech.

波形拼接合成是当今语音合成的重要方法，能够产生高清晰度及高自然度的合成语音。

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First of all, this thesis introduces the features of Direct Digital Frequency Synthesis (DDS) technique and gives a new structure of the Arbitrary Waveform Generators (AWG) base on DDS technology.

首先，本文对数字频率直接合成(DDS)技术的特点进行介绍，提出一种基于DDS技术的任意波形发生器(AWG)的改进结构。

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