Results 11 to 20 of about 37,062,975 (290)
Time-frequency analysis of tremors [PDF]
Brain, 1998 Time-frequency analysis methods were applied to surface EMG records of patients with tremor. Variation in tremor frequency over time and between muscles was measured in subjects with Parkinson's disease (n = 20), essential tremor (n = 8) and psychogenic tremor (n = 7).
P E, O'Suilleabhain, J Y, Matsumoto
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THE TIME AND FREQUENCY CONTROL SUBSYSTEM ONBOARD NAVSTAR/GPS
, 1984 International Telemetering Conference Proceedings / October 22-25, 1984 / Riviera Hotel, Las Vegas, NevadaThe commitment of the Global Positioning System (GPS) to use atomic clocks dates back more than ten years ago when the first major contractual ...
Hellwig, Helmut, Levine, Martin W.
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Time-Frequency Analysis of Systems with Changing Dynamic Properties [PDF]
, 2006 The Wigner-Ville Distribution, and related refinements, represent a class of advanced time-frequency analysis tools that are distinguished from Fourier and wavelet methods by an increase in resolution in the time frequency plane. Time-frequency analysis
Bradford, Samuel Case, V +1 more
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Response Identification in the Extremely Low Frequency Region of an Electret Condenser Microphone
Sensors, 2011 This study shows that a small electret condenser microphone connected to a notebook or a personal computer (PC) has a prominent response in the extremely low frequency region in a specific environment.
Shang-Yin Lee +2 more
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Borneo Lute ‘Sape’: The Frequency Spectrum and Time Frequency Analysis (TFA)
BioResources, 2023 Sound elements were studied for a six strings sape, a traditional instrument. The frequency was evaluated using a frequency spectrum and a time frequency plane. PicoScope oscilloscopes and Adobe Audition version 3 were used to record the acoustic spectra.
Sinin Hamdan +4 more
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A Time–Frequency Analysis Perspective on Feynman Path Integrals
, 2020 The purpose of this expository paper is to highlight the starring role of techniques from time–frequency analysis in some recent contributions concerning the mathematical theory of Feynman path integrals.
S. Ivan Trapasso, Trapasso S. I.
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Sensors, 2019 Conventional wavelet transform (WT) filters have less effect on de-noising and correction of a north-seeking gyroscope sensor exposed to vibration, since the optimal wavelet decomposed level for de-noising is difficult to determine. To solve this problem,
Ji Ma +4 more
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Time-frequency methods for non-stationary statistical signal processing
, 2008 Time-frequency (TF) methods can be used to analyze and process non-stationary random processes in an efficient and intuitive manner. This chapter presents some of the non-parametric methods in this area.
Matz, Gerald, Hlawatsch, Franz
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FPGA Based Real-Time Implementation of Online EMD With Fixed Point Architecture
IEEE Access, 2019 Empirical mode decomposition (EMD) is a data driven method for nonstationary data analysis which has proven to be extremely useful in diverse applications in biomedical engineering.
Sikender Gul +2 more
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A general theory on frequency and time–frequency analysis of irregularly sampled time series based on projection methods – Part 2: Extension to time–frequency analysis [PDF]
Nonlinear Processes in Geophysics, 2018 Geophysical time series are sometimes sampled irregularly along the time axis. The situation is particularly frequent in palaeoclimatology. Yet, there is so far no general framework for handling the continuous wavelet transform when the time sampling ...
G. Lenoir, M. Crucifix, M. Crucifix
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