Academic literature on the topic 'Time-frequency'

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Journal articles on the topic "Time-frequency"

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Richman, M. S., T. W. Parks, and R. G. Shenoy. "Discrete-time, discrete-frequency, time-frequency analysis." IEEE Transactions on Signal Processing 46, no. 6 (1998): 1517–27. http://dx.doi.org/10.1109/78.678465.

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Ke Zhang, Ke Zhang, Decai Zou Ke Zhang, Pei Wang Decai Zou, and Wenfang Jing Pei Wang. "A New Device for Two-Way Time-Frequency Real-Time Synchronization." 網際網路技術學刊 24, no. 3 (2023): 817–24. http://dx.doi.org/10.53106/160792642023052403024.

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<p>The netted wireless sensor nodes or coherent accumulation processing in multistatic radar imaging requires high accuracy time synchronization. Although GNSS timing can also be used as a time synchronization method to serve the applications above, its timing accuracy will be limited. In this context, we present the hardware implementation for Two-Way Time-Frequency Real-Time Synchronization (TWTFRTS) with an automatic adaptive jitter elimination algorithm based on Kalman and PID, which is implemented in a real-time, low-cost, portable Xilinx ZYNQ device. A short (2 km) baseline TWTFRTS
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Filipsky, Yu K., А. R. Аgadzhanyan, and I. V. Svyryd. "Application of time-frequency spectral analysis methods." Odes’kyi Politechnichnyi Universytet. Pratsi, no. 1 (March 31, 2015): 141–45. http://dx.doi.org/10.15276/opu.1.45.2015.23.

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Hlawatsch, F., and W. Kozek. "Time-frequency projection filters and time-frequency signal expansions." IEEE Transactions on Signal Processing 42, no. 12 (1994): 3321–34. http://dx.doi.org/10.1109/78.340770.

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Stanković, Ljubiša, Miloš Daković, and Thayananthan Thayaparan. "A real-time time-frequency based instantaneous frequency estimator." Signal Processing 93, no. 5 (2013): 1392–97. http://dx.doi.org/10.1016/j.sigpro.2012.11.005.

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Qodirova, Zilola. "USAGE OF TIME EXPRESSIONS." Multidisciplinary Journal of Science and Technology 4, no. 10 (2024): 316–19. https://doi.org/10.5281/zenodo.14002290.

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Time expressions are phrases or idioms that convey specific meanings related to the concept of time. They can enhance communication by adding depth and context to discussions about schedules, deadlines, or the passage of time. Here are some notable time expressions, along with their meanings and usage.
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COHEN, LEON. "Time-Frequency Spatial-Spatial Frequency Representations." Annals of the New York Academy of Sciences 808, no. 1 Nonlinear Sig (1997): 97–115. http://dx.doi.org/10.1111/j.1749-6632.1997.tb51655.x.

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Hall, Matt. "Time-frequency decomposition." Leading Edge 37, no. 6 (2018): 468–70. http://dx.doi.org/10.1190/tle37060468.1.

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Popescu, Theodor D. "Time-frequency analysis." Control Engineering Practice 5, no. 2 (1997): 292–94. http://dx.doi.org/10.1016/s0967-0661(97)90028-9.

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Belouchrani, A., and M. G. Amin. "Time-frequency MUSIC." IEEE Signal Processing Letters 6, no. 5 (1999): 109–10. http://dx.doi.org/10.1109/97.755429.

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Dissertations / Theses on the topic "Time-frequency"

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Coates, Mark J. "Time frequency modelling." Thesis, University of Cambridge, 1999. https://www.repository.cam.ac.uk/handle/1810/272036.

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Elayouty, Amira Sherif Mohamed. "Time and frequency domain statistical methods for high-frequency time series." Thesis, University of Glasgow, 2017. http://theses.gla.ac.uk/8061/.

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Advances in sensor technology enable environmental monitoring programmes to record and store measurements at high-temporal resolution over long time periods. These large volumes of high-frequency data promote an increasingly comprehensive picture of many environmental processes that would not have been accessible in the past with monthly, fortnightly or even daily sampling. However, benefiting from these increasing amounts of high-frequency data presents various challenges in terms of data processing and statistical modeling using standard methods and software tools. These challenges are attri
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Mai, Cuong. "Frequency Estimation Using Time-Frequency Based Methods." ScholarWorks@UNO, 2007. http://scholarworks.uno.edu/td/571.

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Any periodic signal can be decomposed into a sum of oscillating functions. Traditionally, cosine and sine segments have been used to represent a single period of the periodic signal (Fourier Series). In more general cases, each of these functions can be represented by a set of spectral parameters such as its amplitude, frequency, phase, and the variability of its instantaneous spectral components. The accuracy of these parameters depends on several processing variables such as resolution, noise level, and bias of the algorithm used. This thesis presents some background of existing freque
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Lie, Victor Daniel. "Relational time-frequency analysis." Diss., Restricted to subscribing institutions, 2009. http://proquest.umi.com/pqdweb?did=1997611171&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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Ahrabian, Alireza. "Multivariate time-frequency analysis." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/28958.

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Recent advances in time-frequency theory have led to the development of high resolution time-frequency algorithms, such as the empirical mode decomposition (EMD) and the synchrosqueezing transform (SST). These algorithms provide enhanced localization in representing time varying oscillatory components over conventional linear and quadratic time-frequency algorithms. However, with the emergence of low cost multichannel sensor technology, multivariate extensions of time-frequency algorithms are needed in order to exploit the inter-channel dependencies that may arise for multivariate data. Applic
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Terwilleger, Erin. "Multidimensional time-frequency analysis /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3052223.

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Abdoush, Yazan <1989&gt. "Time-Frequency Signal Analysis and Adaptive Instantaneous Frequency Estimation." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amsdottorato.unibo.it/9079/1/Thesis.pdf.

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Most of the human-made and physical signals have nonstationary spectra that evolve rapidly with time. To study and characterize such signals, the classic time-domain and frequency-domain representations are inadequate, since they do not provide joint time and frequency information; meaning that, they are signal representations in which the time and frequency variables are mutually exclusive. Time-frequency (TF) signal analysis (TFSA) concerns the processing of signals with time-varying spectral content. It allows for the construction of a signal representation in which the time and frequency v
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Maeser, Anna Marie. "Time-frequency dual and quantization." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-1/maesera/annamaeser.pdf.

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Sylvestre, Benoit. "Time-scale modification of speech : a time-frequency approach." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60496.

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Time-scale modification (TSM) is a process whereby signals are compressed or expanded in time in a manner which preserves their original frequency characteristics. This work explores TSM algorithms for sampled speech. A known approach (2) which is based on the short-time Fourier transform (STFT) is first reviewed, then modified to provide high-quality TSM of speech signals at a lower computational cost. The proposed algorithm resembles the sinusoidal speech model (SSM) based approach (9), yet incorporates new phase compensatory measures to prevent excessive structural deterioration of the time
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Khumsat, Phanumas. "Transition frequency integration : technique for high frequency continuous-time filters." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398200.

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Books on the topic "Time-frequency"

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Xiu, Liming, ed. From Frequency to Time-Average-Frequency. John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119102175.

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Tolimieri, Richard. Time-frequency representations. Birkhauser Boston, 1997.

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Hlawatsch, Franz, and Franois Auger, eds. Time-Frequency Analysis. ISTE, 2008. http://dx.doi.org/10.1002/9780470611203.

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Tolimieri, Richard, and Myoung An. Time-Frequency Representations. Birkhäuser Boston, 1996. http://dx.doi.org/10.1007/978-1-4612-4152-2.

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Tolimieri, Richard. Time-Frequency Representations. Birkhäuser Boston, 1996.

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Cohen, Leon. Time-frequency analysis. Prentice Hall PTR, 1995.

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James, Jespersen, and Hanson D. W, eds. Time and frequency. Institute of Electrical and Electronics Engineers, 1991.

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Flandrin, Patrick. Time-frequency/time scale analysis. Academic Press, 1999.

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Riley, Michael D. Speech Time-Frequency Representations. Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1079-2.

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D, Riley Michael. Speech time-frequency representations. Kluwer Academic, 1988.

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Book chapters on the topic "Time-frequency"

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Hlawatsch, Franz. "Time-Frequency Filters and Time-Frequency Expansions." In The Kluwer International Series in Engineering and Computer Science. Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-2815-6_5.

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Tolimieri, Richard, and Myoung An. "Review of algebra." In Time-Frequency Representations. Birkhäuser Boston, 1998. http://dx.doi.org/10.1007/978-1-4612-4152-2_1.

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Tolimieri, Richard, and Myoung An. "Cross-ambiguity function." In Time-Frequency Representations. Birkhäuser Boston, 1998. http://dx.doi.org/10.1007/978-1-4612-4152-2_10.

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Tolimieri, Richard, and Myoung An. "Ambiguity surfaces." In Time-Frequency Representations. Birkhäuser Boston, 1998. http://dx.doi.org/10.1007/978-1-4612-4152-2_11.

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Tolimieri, Richard, and Myoung An. "Orthonormal W-H systems." In Time-Frequency Representations. Birkhäuser Boston, 1998. http://dx.doi.org/10.1007/978-1-4612-4152-2_12.

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Tolimieri, Richard, and Myoung An. "Duality." In Time-Frequency Representations. Birkhäuser Boston, 1998. http://dx.doi.org/10.1007/978-1-4612-4152-2_13.

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Tolimieri, Richard, and Myoung An. "Frames." In Time-Frequency Representations. Birkhäuser Boston, 1998. http://dx.doi.org/10.1007/978-1-4612-4152-2_14.

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Tolimieri, Richard, and Myoung An. "Implementation." In Time-Frequency Representations. Birkhäuser Boston, 1998. http://dx.doi.org/10.1007/978-1-4612-4152-2_15.

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Tolimieri, Richard, and Myoung An. "Algebra of multirate structures." In Time-Frequency Representations. Birkhäuser Boston, 1998. http://dx.doi.org/10.1007/978-1-4612-4152-2_16.

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Tolimieri, Richard, and Myoung An. "Multirate structures." In Time-Frequency Representations. Birkhäuser Boston, 1998. http://dx.doi.org/10.1007/978-1-4612-4152-2_17.

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Conference papers on the topic "Time-frequency"

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Sun, Guoqing, Zhaohui Wang, Jiameng Dong, Song Yu, Xing Chen, and Bin Luo. "Time Interval Measurement Based on Fine-Time Synthesis Module." In 2024 European Frequency and Time Forum (EFTF). IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722466.

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Kinali, Attila, and Sophie Wenning. "Noise in Frequency Dividers." In 2024 European Frequency and Time Forum (EFTF). IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722525.

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Fu, Yang, Xiaoming Zhang, Xinyi Chen, et al. "Data Processing Optimization and System Characterization of Frequency Comb-Based Time and Frequency Transfer." In 2024 European Frequency and Time Forum (EFTF). IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722484.

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El-Hadbi, Assia, Oussama Elissati, and Laurent Fesquet. "Precise Time-of-Flight Measurements Using a Novel High-Resolution Time-to-Digital Converter Architecture." In 2024 European Frequency and Time Forum (EFTF). IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722727.

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Miani, Theo, Lokesh Gurung, Guillermo Sobreviela-Falces, et al. "Frequency Noise Optimization in Micromachined Resonant Sensors." In 2024 European Frequency and Time Forum (EFTF). IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722230.

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Boughdachi, Sana, Christoph Stihler, and Andreas Brodschelm. "Linewidth Engineering of an Er:Fiber Frequency Comb." In 2024 European Frequency and Time Forum (EFTF). IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722439.

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Bisong, Wang, Peter Yun, and Hao Qiang. "Laser Frequency Offset Locking with Dual-modulation." In 2024 European Frequency and Time Forum (EFTF). IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722365.

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Śliwczyński, Łukasz, Przemyslaw Krehlik, Łukasz Buczek, et al. "Experimental Investigation of Interoperability in Optical Frequency Transfer." In 2024 European Frequency and Time Forum (EFTF). IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722370.

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Yang, Qiaohui, Zhenyu Hu, Tianyu Liu, et al. "Compact Optical Frequency Standard with MEMS Vapor Cells." In 2024 European Frequency and Time Forum (EFTF). IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722316.

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Alon, M., N. Akerman, E. Shafir, and R. Ozeri. "Frequency Dissemination with Less than 2 × 10–18 Fractional-Frequency Instability Over 120 km of a Commercial Fiber Infrastructure." In 2024 European Frequency and Time Forum (EFTF). IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722430.

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Reports on the topic "Time-frequency"

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Potts, Petrina C. NIST time and frequency bulletin. National Institute of Standards and Technology, 2014. http://dx.doi.org/10.6028/nist.ir.7980-01.

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Potts, Petrina C. NIST Time and Frequency Bulletin. National Institute of Standards and Technology, 2014. http://dx.doi.org/10.6028/nist.ir.7980-02.

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Potts, Petrina C. NIST Time and Frequency Bulletin. National Institute of Standards and Technology, 2014. http://dx.doi.org/10.6028/nist.ir.7980-03.

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Potts, Petrina C. NIST Time and Frequency Bulletin. National Institute of Standards and Technology, 2014. http://dx.doi.org/10.6028/nist.ir.7980-04.

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Potts, Petrina C. NIST time and frequency bulletin. National Institute of Standards and Technology, 2014. http://dx.doi.org/10.6028/nist.ir.7980-05.

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Potts, Petrina C. NIST time and frequency bulletin. National Institute of Standards and Technology, 2014. http://dx.doi.org/10.6028/nist.ir.7980-06.

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Potts, Petrina C. NIST time and frequency bulletin. National Institute of Standards and Technology, 2014. http://dx.doi.org/10.6028/nist.ir.7980-07.

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Potts, Petrina C. NIST time and frequency bulletin. National Institute of Standards and Technology, 2014. http://dx.doi.org/10.6028/nist.ir.7980-08.

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Potts, Petrina C. NIST time and frequency bulletin. National Institute of Standards and Technology, 2014. http://dx.doi.org/10.6028/nist.ir.7980-09.

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Potts, Petrina C. NIST time and frequency bulletin. National Institute of Standards and Technology, 2014. http://dx.doi.org/10.6028/nist.ir.7980-10.

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