The direct digital frequency synthesis(DDS) is a kind of new frequency synthesis method. It has high frequency resolution, fast frequency switching speed, etc.

直接数字频率合成（DDS）是一种新的频率合成方法，具有频率分辨率高、切换速度快等优点。

The frequency resolution and the character of real-time are also discussed.

同时对其频率分辨率和实时性进行了讨论。

Direct Digital Synthesizer(DDS) has the advantages of high frequency resolution, rapid frequency change rate and low phase noise.

直接数字频率合成器DDS具有极高的分辨率、频率转换速度快、相位噪声低等优点。

Direct digital frequency synthesis (DDS) is the most recent technique for frequency synthesis. It has the advantage of fine frequency resolution and fast switching speed.

直接数字式频率合成（DDS）是最新的频率合成方法，它具有分辩力高、转换速度快等优点。

The adjusted factor affects the time-frequency resolution in the simulation of several synthetic signal models.

通过对几种合成信号模型仿真，阐述了时窗调节因子对时频分辨率的影响。

Zoom complex envelope is formed by zoom technique applied to complex envelope in order to increase the frequency resolution.

细化复包络谱是将细化技术应用到复包络谱上，可以提高频率分辨力。