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- time frequency filtering 时间频率滤波
- It includes topics such as spatial frequency filtering, holography. 它包括空间频率滤光、全息摄影。
- In seismic data processing, the timedependent frequency filter method introduced here uses about the same calculating time as the recurrence filter method, but gives better results. 对二维滤波讨论了正负速度区别解决了时域滤波产生坑席现象的问题，计算方法比时域滤波统一，简单，计算时间省。
- It is possible that the computer is of low grade, and the time frequency is too low, please change for a new computer. 有可能是主机档次太低,时钟频率过低,请更换主机。
- This paper proposes a new method based on time frequency analysis to detect spikes automatically. 本研究提出了一种基于时频分析的癫痫脑电棘波检测方法。
- Method of insertion loss measurement for radio frequency filters. 射频滤波器插入损耗的测量方法。
- Secondly, to the nonstationarity of diesel engine noise, this paper focuses on the extraction of time frequency feature using wavelet scalogram. 其次针对噪声信号的非平稳性，研究基于小波尺度谱噪声分量的时频特征分析。
- The invention discloses a high frequency filter for filtering a frequency component from a high frequency signal includes a capacitor and a branch line. 本发明公开了一种高通滤波器，用于从高频信号中对频率分量进行滤波，该高通滤波器包括电容器和支路。
- M. Akay, "Time Frequency and Wavelets in Biomedical Signal Processing," Endorsed by IEEE Engineering in Medicine and Biology Society, pp.211-420, 1998. 翁国正，“应用小波系数临界法于消除助听器背景噪音之技术”，国立成功大学电机工程学系硕士论文，民国九十二年。
- Taking Time Frequency Distribution (TFD) of the radar signal as an image, the method uses image processing algorithm for extracting its singular value. 该方法把雷达信号的时频分布作为一幅图像进行处理，利用图像处理算法提取其奇异值特征。
- As planetary healers, we must become aware of the galactic time frequency and learn how to use the natural harmonics of time to our advantage. 身为行星的治疗者，我们必须意识星际时间频率，学习如何使用自然和谐的时间，成为我们的优势。
- Delivering breathtaking scope for creativity, consummate clarity and a world first in terms of its Effect Frequency Filter, the ingenious new DJM-700 is dramatically different. 发表惊人的创意空间,完善和清晰的世界第一来说,其效果频滤波器,巧妙新粉喷桩-700是大大不同。
- It shows that since 1999 the seismic activity mainly belongs to the tectonic event based on a seismic spectral and time frequency analysis. 火山地震的频谱分析和时频分析结果表明，自1999年以来发生的火山地震主要为构造型火山地震。
- Using a method of the spatial frequency filtering by combining the directional filtering with the very low frequency filtering, the desirable optical signals cau be taken out of a considerably complex image. 采用方向性滤波与极低频滤波相结合的方法;可以从较复杂的图象中提取所需用的信号.
- The PZT matching layer redistributes the frequency spectrum of an original broadband ultrasonic probe, and acts as a frequency filter without reducing the wave amplitude. 此层锆钛酸铅匹配层可将原本超音波探头之宽频率分布过滤成某些特定频率之峰值，且没有降低该频率峰值相对于原始探头强度之强度。
- The time frequency analysis remedies the defect that short Fourier translation (SFT) has the same time resolution and frequency resolution to different frequency ranges. 该方法克服了SFT（短时Fourier变换）分析对高、低频段具有相同的时间分辨率和频率分辨率的缺点，弥补了小波变换只能粗糙地模拟基底膜带通滤波器特性的不足。
- Using computer simulation, the results show that fluctuating wind synthesis with time frequency nonstationarity can reflect normal characteristic of fluctuating wind. 通过计算机仿真分析，结果表明小波重构合成的脉动风具有良好的时频非平稳性，能够反映脉动风特性；
- Combined with the basic principle and method of the radar multitarget resolving,the application of time frequency analysis is discussed for nonrigid multitarget resolving. 从雷达多目标分辨的基本原理和方法出发,探讨了时频分析在雷达非刚性多目标分辨中的应用问题。
- Fruit juices ferment if they are kept a long time. 果汁若是放置很久，就会发酵。
- Time is sometimes called the fourth dimension. 时间有时被称为第四度空间。
