您要查找的是不是：
- But as for the non-stationary signal, this tool is not useful because it is a fully time domain or fully frequency domain transform, it cannot provide the frequency information at any local time segment. 但对非平稳信号来说，这种工具就显得力不从心。 因为它是一种全频域、全时域的变换，它将信号从时域变换到了频域，在频域的定位性是完全准确的(即频域分辨率最高)，但其在时域却无任何分辨能力，不能提供任何局部时间段上的频率信息。
- frequency domain transform 频域变换
- It gives how to analyse the dynamic network Usmg the Laplace transform af-ter doing the transform from time-domain to complex frequency domain. 给出在完成电路时域模型到复频域模型变换后，如何用拉普拉斯变换求解动态网络。
- Wavelet transform (WT) has been widely used in many data-processing fields in that it can analyze the data both in time and in the frequency domain. 小波变换方法由于具有同时在时间域与频率域分析的特点，在信号的分析处理方面得到广泛的应用；
- The algorism for frequency domain use FFT to realize. 频域算法采用了快速傅立叶变换实现；
- The frequency domain, the holograph and related concepts have all been used. 频率域、全息及有关的概念都已采用。
- Meanwhile, data of complete time domain waveform is needed in order to calculate accurate S-parameters of frequency domain via fast Fourier transform (FFT). 而要通过快速傅立叶变换(FFT)获得准确的频域参数，又必须得到完整的时域波形数据。
- For example, the cepstrum converts a signal to the frequency domain through Fourier transform, takes the logarithm, then applies another Fourier transform. 为了保证被采样的模拟信号是带限的，通常在采样之前要对它进行适当的带通或低通滤波。
- Using the transform relation connecting time domain and frequency domain and the constitutive relation,the differential equations of double negative material(DNM) is obtained. 由双负介质的本构关系出发,利用时频转换关系,推导出了描述双负介质中电磁场与电磁流的微分方程组。
- Finally, it is easy to move form the Laplace domain into frequency domain. 最后，从拉氏域转换到频率域也很容易。
- A comparison of IIL with OAI in theory and frequency domain is given. 从成像原理和频域范围的角度对IIL和OAI进行了理论研究、计算模拟和对比分析。
- From which z's domain to the domain transform their own preparation, instead of MATLAB system BUTTERWORTH system function (for graduate design students more useful! 这是一个基于MATLAB编写的BUTTERWORTH滤波器的程序.;其中从s域到z域的变换是自己编写的;代替了MATLAB中的系统BUTTERWORTH的系统函数(对于毕业设计的学生;比较有用!!
- By utilizing the character of dissymmetrical fractional fourier transform and combine the algorithm advantage of space domain and frequency domain, it presents a blind image watermarking algorithm. 摘要结合空间域和变换域算法特点，利用不对称分数傅立叶变换的特性，提出了一种图象盲水印算法。
- Step 5: According to the sound spectrum, inversion of time-domain graphics. (With distortion) Step six: to carry out inverse Fourier transform frequency domain IFFT and painted graphics. 步骤五：根据该声音的频谱，反演时域图形 。（有失真） 步骤六：进行付立叶逆变换IFFT并画频域图形 。
- First,from the constitutive relation and the transform relation connecting time domain and frequency domain,the differential equations of double negative material(DNM) are obtained. 由双负介质的本构关系出发,利用时频转换关系,推导出了描述双负介质中场与流的微分方程组。
- Silhouette lines are extracted automatically from image,by acquiring points of extremum of first directional derivative perpendicular to silhouette line with Fourier Transform in frequency domain. 本文提出通过傅里叶变换,在频率域通过求垂直于物体轮廓线的一阶方向导数,并检测其极值点(极大极小)来确定物体轮廓。
- An effective depth to time domain transforming method is presented to improve normal sample method. 提出了一种有效的对常规采样方法改进的深时转换方法。
- A Wiener weighting adaptive time delay estimation algorithm based on frequency domain is presented. 提出了一种基于频域自适应滤波的维纳加权时延估计算法。
- To indicate the effect of gyro moment on the mount system, including frequency domain response and time domain response, the new system was analyzed. 对新的动力总成悬置系统动力学模型进行计算分析，研究了陀螺矩阵对频域、时域响应的影响。
- Frequency domain:total frequency components(TF),low frequency components(LF),high frequency components(HF). 频域分析:总频谱成分(TF),低频成分(LF),高频成分(HF)。
