Results 11 to 20 of about 1,081,536 (284)

The face is central to primate multicomponent signals [PDF]

open access: yesInternational Journal of Primatology, 2022
AbstractA wealth of experimental and observational evidence suggests that faces have become increasingly important in the communication system of primates over evolutionary time and that both the static and moveable aspects of faces convey considerable information. Therefore, whenever there is a visual component to any multicomponent signal the face is
Bridget M. Waller   +4 more
openaire   +5 more sources

Decomposition of Multicomponent Micro-Doppler Signals Based on HHT-AMD

open access: yesApplied Sciences, 2018
Micro-Doppler signals analysis has been emerging as an important topic in target identification, and relative research has been focusing on features extraction and separation of the radar signals.
Wenchao Li, Gangyao Kuang, Boli Xiong
doaj   +2 more sources

A Novel Thresholding Technique for the Denoising of Multicomponent Signals [PDF]

open access: yes2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2018
This paper addresses the issues of the denoising and retrieval of the components of multicomponent signals from their short-time Fourier transform (STFT). After having recalled the hard-thresholding technique, in the STFT context, we develop a new thresholding technique by exploiting some limitations of the former.
Duong-Hung Pham, Sylvain Meignen
openaire   +3 more sources

Efficient Analysis of Time-Varying Multicomponent Signals with Modified LPTFT [PDF]

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
This paper presents efficient algorithms for the analysis of nonstationary multicomponent signals based on modified local polynomial time-frequency transform.
Wei Yongmei, Bi Guoan
doaj   +2 more sources

The face is central to primate multicomponent signals

open access: yes, 2023
A wealth of experimental and observational evidence suggests that faces have become increasingly important in the communication system of primates over evolutionary time and that both the static and moveable aspects of faces convey considerable ...
Eithne Kavanagh (8847737)   +4 more
core   +5 more sources

Signals of Popularity

open access: yes, 2023
In this project we focus on the interplay between volume of sales and number of reviews and explore what happens when these signals are perceived as congruent versus ...
Signals of Popularity
core   +1 more source

A Signal Complexity-Based Approach for AM–FM Signal Modes Counting

open access: yesMathematics, 2020
Frequency modulated signals appear in many applied disciplines, including geology, communication, biology and acoustics. They are naturally multicomponent, i.e., they consist of multiple waveforms, with specific time-dependent frequency (instantaneous ...
Vittoria Bruni   +2 more
doaj   +1 more source

Local maximum synchrosqueezes form scaling-basis chirplet transform

open access: yesPLoS ONE, 2022
In recent years, time-frequency analysis (TFA) methods have received widespread attention and undergone rapid development. However, traditional TFA methods cannot achieve the desired effect when dealing with nonstationary signals.
Yating Hou   +3 more
doaj   +2 more sources

Alpha Transmitter Signals Observed by the Van Allen Probes: Ducted Versus Nonducted Propagation

open access: yesGeophysical Research Letters, 2022
The interaction of very low frequency transmitter signals with radiation belt electrons depends ultimately on their wave normal angles. In the equatorial interaction region, these can be either low (ducted propagation) or comparatively large (nonducted ...
F. Němec   +3 more
doaj   +1 more source

Analyse des signaux multicomposante à modulation de fréquence linéaire par la transformation de Teager-Huang-Hough [PDF]

open access: yes, 2014
A novel detection approach of linear FM (LFM) signals, with single or multiple components, in the time-frequency plane of Teager-Huang (TH) transform is presented.
BOUDRAA, Abdelouahab   +4 more
core   +1 more source

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