Mandelis, "Features of the frequency-and time- domain photoacoustic modalities," Int. J. Thermophys., vol. 34, nos. 8-9, pp. 1398-1404, 2013.B. Lashkari and A. Mandelis, "Features of the frequency- and time-domain photoacoustic modalities," Int. J. Thermophys. 34, 1398-1404 (2013...
摘要: We proposed a deep model that captures the spatiotemporal dependence of time series.We transform the time series classification task into an image classification task.Our method can classify time series from both time and frequency-domain perspectives....
frequency domain. In fact, there are four properties that make sine waves very useful for describing any other waveform. These properties are as follows: 1. Any waveform in the time domain can be completely and uniquely described by combinations of sine wave. ...
processing, instead of viewing a time series as a one-dimensional signal, time–frequency analysis studies a signal in both time and frequency domains simultaneously by some function whose domain is the two-dimensional real plane to extract transient features from the signal by a time–frequency ...
For this type of signals, neither the time-domain features nor the frequency-domain ones can provide enough information for an effective diagnosis due to their lack of information in each other domain. The time–frequency distribution (TFD) combines the information in time and in frequency. It ...
Make time and frequency domain analysis for the test data, and compare with the results of vibration mode and numerical simulation analysis. 其对测试数据进行时域和频域分析,并与振动模态分析及数值模拟分析结果比较。 bbs.fobshanghai.com 2. In the end, this dissertation analyzes and compares the grou...
These calls can be divided into three types according to their time domain characteristics and frequency domain characteristics: click, whistle and pulsed calls [1], [2]. Among the three signals, the whistle signal not only has a large number, but also has rich and various time–frequency ...
Modern data-driven methods are typically formulated as a time series forecasting task and fail to retain high accuracy. Meantime, as the primary modeling method for time series forecasting, frequency-domain analysis is underutilized in the flight trajectory prediction task. In this work, an ...
The study in the age of the 4th industrial revolution examines the time and frequency domain connectedness and spill-over among Fintech, green bonds, and cryptocurrencies. Using daily data from November 2018 to June 2020, we use both DY (Diebold & Yilmaz, 2012) and BK (Baruník et al., ...
Acoustic on-off and amplitude-tunable switch. By switching on/off the source S2, the wave generated by S1 can/cannot propagate through the device. This is visible in numerical simulations in both the (a) time and (b) frequency domain. The FFT performed over different time windows (highlighte...