Signal and it's Fourier transform can reflect the info of time domain and frequence domain independently.
信号及其傅里叶变换可以分别反映信号在时频两域内的信息。
Feature extraction is the key of the content based watermarking algorithm. Feature can be extracted either in the space domain or in the frequence domain.
特征提取是基于内容的数字水印技术的关键，它可以在空域和变换域两个空间进行。
A new approach is developed to the evaluation of linear quadratic optimal control problem (LQ) in frequence domain, and its practical procedure is pre - sented.
本文研究在频域中线性系统二次性能最优控制问题(LQ问题)的计算方法，并给出具体步骤。
The formulations of the response are developed from the those of the frequence-domain by the Fourier transform.
用傅里叶变换由频率域公式导出了时间域的响应公式。
On the research of convolutive mixtures, deal them with algorithm either in time-domain or frequence-domain.
在卷积信号的分离算法研究中，用到了频域和时域算法，并对算法性能进行了对比。
On the research of convolutive mixtures, deal them with algorithm either in time-domain or frequence-domain.
在卷积信号的分离算法研究中，用到了频域和时域算法，并对算法性能进行了对比。
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