Results 11 to 20 of about 101,768 (266)

A Preliminary Investigation on Frequency Dependant Cues for Human Emotions

open access: yesAcoustics, 2022
The recent advances in Human-Computer Interaction and Artificial Intelligence have significantly increased the importance of identifying human emotions from different sensory cues.
Manish Kumar   +2 more
doaj   +1 more source

An Underwater Acoustic Target Recognition Method Based on Combined Feature With Automatic Coding and Reconstruction

open access: yesIEEE Access, 2021
Underwater acoustic target recognition is one of the main functions of the SONAR systems. In this paper, a target recognition method based on combined features with automatic coding and reconstruction is proposed to classify ship radiated noise signals ...
Xinwei Luo, Yulin Feng, Minghong Zhang
doaj   +1 more source

A Non-Contact Vital Signs Detection in a Multi-Channel 77GHz LFMCW Radar System

open access: yesIEEE Access, 2021
The technology of vital signs detection has been proven of great use, whereas it is still limited by several challenges. One of the major challenges is the random body movements (RBMs), which significantly degrade the accuracy of the measurement. In this
Qisong Wu   +4 more
doaj   +1 more source

Enhanced Near-Field Interference Suppression Scheme for the Non-Cooperative Underwater Acoustic Pulse Detection of the Towed Linear Array

open access: yesJournal of Marine Science and Engineering, 2022
Near-field interference suppression for a towed linear array (TLA) is investigated in this paper. The existing eigencomponent association (ECA) scheme and multiple signal classification interference suppression (MUSIC-IS) scheme require the prior ...
Kun Wei, Shiliang Fang, Jun Tao
doaj   +1 more source

Hybrid SVM-CNN Classification Technique for Human–Vehicle Targets in an Automotive LFMCW Radar

open access: yesSensors, 2020
Human–vehicle classification is an essential component to avoiding accidents in autonomous driving. The classification technique based on the automotive radar sensor has been paid more attention by related researchers, owing to its robustness to low ...
Qisong Wu   +3 more
doaj   +1 more source

Time Domain Spherical Harmonic Processing with Open Spherical Microphones Recording

open access: yesApplied Sciences, 2021
Spherical harmonic analysis has been a widely used approach for spatial audio processing in recent years. Among all applications that benefit from spatial processing, spatial Active Noise Control (ANC) remains unique with its requirement for open ...
Huiyuan Sun   +2 more
doaj   +1 more source

Variable Scale Relative Entropy Detection for Non-Cooperative Underwater Acoustic Pulse Signals

open access: yesIEEE Access, 2020
This work investigates the detection of non-cooperative underwater acoustic pulse signals at low signal-to-noise ratio (SNR). A variable scale relative entropy (VSRE) pulse signal detection scheme is proposed. Different from conventional relative entropy
Kun Wei, Shiliang Fang, Jun Tao
doaj   +1 more source

Acoustic signalling in Orthoptera [PDF]

open access: yes, 2021
Acoustic communication is one of the most well-known behavioural traits of the Orthoptera. Orthopteran insects and the sounds they produce are both extremely diverse, and species-specific sounds are an extremely important tool in orthopteran taxonomy and systematics. For most species, acoustic signalling is the most important means of communication. It
Hall, Marion, Robinson, David
openaire   +1 more source

Parameter Estimation for Multi-Scale Multi-Lag Underwater Acoustic Channels Based on Modified Particle Swarm Optimization Algorithm

open access: yesIEEE Access, 2017
The wideband underwater acoustic multipath channel can be modeled as a multi-scale multi-lag (MSML) channel because signals from different paths might experience different Doppler scales. This brings great challenge to channel parameter estimation.
Xing Zhang   +3 more
doaj   +1 more source

Dynamic Optimization Method for Broadband ADCP Waveform with Environment Constraints

open access: yesSensors, 2021
Broadband acoustic Doppler current profiler (ADCP) is widely used in agricultural water resource explorations, such as river discharge monitoring and flood warning.
Yongshou Yang, Shiliang Fang
doaj   +1 more source

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