time/frequency resolution
Frequency Estimation Using Time-Frequency Based Methods
... the time-frequency plane similar to the one shown in Figure 4, as well as shearing it along the time and frequency ...the time-frequency cells presents new opportunities of ...
102
Research and Comparison of Time-frequency Techniques for Nonstationary Signals
... in frequency domain. The time-frequency techniques may give a comprehensive description of signals in time-frequency ...five time-frequency analysis methods, i.e., the ...
5
Exploiting spectro-temporal locality in deep learning based acoustic event detection
... high resolution spectrograms have shown a significant advantage over existing predefined features ...the time-frequency domain. These can be exposed by adjusting the time-frequency ...
12
An Analysis of the Effects of Digital Phase Errors on the Performance of a FMCW Doppler Radar
... points are collected as rows of a matrix every sweep repetition interval until a total of 𝑀 rows are obtained, over a period of time that corresponds to the reciprocal of the desired Doppler frequency ...
101
Multi-Band Frequency Window for Time-Frequency Fault Diagnosis of Induction Machines
... Nevertheless, frequency domain analysis requires stable working conditions, which is not the case for wind generators, motors driving varying loads, ...the time-frequency domain -such as a ...
18
Efficient Detection of Multi-Narrowband Using the Warped Discrete Fourier Transform
... uniform frequency spectrum, a process called ...uniform frequency resolution across the entire baseband, the WDFT’s frequency resolution is both non-uniform and ...optimizing ...
8
On uncertainty principle of the local polynomial Fourier transform
... the frequency resolution of the signal, Figure 5 compares signal concentration obtained from the STFT, LPFT and WVD at a particular time ...instant. Resolution usually means whether we can ...
13
Discrete Wavelet Transform Based Feature Extraction and Denoising of Speech Signal
... different time-frequency resolutions in ...high frequency resolution at lower frequencies in order to resolve pitch and forman ...computation time and ...
8
Multi Resolution Fourier Analysis Part I: Fundamentals
... the time interval T, determines the frequency ...of time windowing effects [11,12] and others that provide minimum-error band-limited approximation of non band-limited signals [13], performance ...
8
A Time-Frequency Approach to Feature Extraction for a Brain-Computer Interface with a Comparative Analysis of Performance Measures
... irregular frequency com- ponents introduced by noise and help compensate for miss- ing ...the frequency resolution will be poor, and if the window is too wide, the time localiza- tion will not ...
11
Enhanced Frequency Resolution in Data Analysis
... respectively. Noise amplitude is unity. We use 8 samples of 300 points each. The picture is quite clear (large red dots indicate the positions of the signal poles): only one reconstructed pole appears to fall on the ...
10
The origin of noise in semi langrangian integrations
... They encountered very strong high frequency oscillations in their vertical diffusion scheme when they used large time steps with high vertical resolution near the surface in a semi-Lagra[r] ...
28
An Analytical Approach for Fourier series with Application
... Finally, the you must pick a sample time which ensures that all the frequencies in your time signal are resolved in the resulting bandwidth of the frequency coefficients. How do you do this since ...
10
Finding Significant Correlates of Conscious Activity in Rhythmic EEG
... 2. TIME-FREQUENCY ENERGY DENSITY OF SIGNALS Among the parameters used in nowadays BCI systems (like those designed in the Graz University of Technology [3]), event-related desynchronization and ...
6
Efficient Lifting Based Wavelet Transform in Image Processing for Watermarking Application
... In case of images keep the intensity (mean of the samples) constant throughout different levels. The third step (update phase) updates the even samples using the newly calculated odd samples such that the desired ...
5
Numerical treatment of seismic accelerograms and of inelastic seismic structural responses using harmonic wavelets
... a time- dependent spectrum at time t can be defined as the Fourier transform of an instantaneous correlation function R(τ, t), which corresponds to the standard correlation function R(τ) with time ...
27
Formation and Maintenance of Nocturnal Low-Level Stratus over the Southern West African Monsoon Region during AMMA 2006
... NLLJ is weaker in clear nights than in cloudy nights, and the height of the maximum is closer to the ground (Figs. 11b and 11f). This is in agreement with an observation- based discussion of a clear night by Schrage and ...
20
A Study of T = 1, T = 3/2, and T = 2 States in Some Light Nuclei Using (He^3,n) Reactions
... Among the factors which contribute to the resolution are beam energy resolution, beam burst length, electronic resolution, the total neutron flight time, the flight time of neutrons thro[r] ...
213
Three Dimensional Radar Coincidence Imaging
... the time-independent transmitting signals. However, the complete time-independence denoted as (1) is almost impossible for either simulation data or actual radar ...incompletely time-independent ...
16
Design Technique of Phase-Locked Loop Frequency Synthesizer in CMOS Technology: A Review
... A frequency synthesizer (FS) is a feedback system that generates one or many frequencies from one or a few frequency ...its frequency tuning range, frequency resolution, and ...
5