Results 31 to 40 of about 72,624 (215)

Analysis and Modeling of Timbre Perception Features in Musical Sounds

Applied Sciences, 2020
A novel technique is proposed for the analysis and modeling of timbre perception features, including a new terminology system for evaluating timbre in musical instruments.
Wei Jiang, Jingyu Liu, Xiaoyi Zhang, Shuang Wang, Yujian Jiang   +4 more
doaj   +1 more source

ECRKQ: Machine Learning-Based Energy-Efficient Clustering and Cooperative Routing for Mobile Underwater Acoustic Sensor Networks

IEEE Access, 2021
The dynamic topology, narrow transmission bandwidth, and limited energy of sensor nodes in mobile underwater acoustic sensor networks (UASNs) pose challenges to design an efficient and robust network for underwater communications.
Jianying Zhu, Yougan Chen, Xiang Sun, Jianming Wu, Zhenwen Liu, Xiaomei Xu   +5 more
doaj   +1 more source

Node Energy Consumption Balanced Multi-Hop Transmission for Underwater Acoustic Sensor Networks Based on Clustering Algorithm

IEEE Access, 2020
With the advancement and implementation of marine strategies in various countries, it is of great significance to collect marine data by using underwater acoustic sensor networks (UWA-SNs).
Meihuang Wang, Yougan Chen, Xiang Sun, Fanggui Xiao, Xiaomei Xu   +4 more
doaj   +1 more source

MF-HER: Marine Mammal-Friendly Based High Spectral-Efficient Routing for Underwater Acoustic Sensor Networks

IEEE Access, 2020
In real ocean environments, artificial acoustic and natural acoustic systems are coexisted to share scarce spectrum resources. In this paper, we propose a marine mammals-friendly based high spectral-efficient routing (MF-HER) protocol to improve spectrum
Yougan Chen, Xinrui Zhang, Xiang Sun, Yi Tao, Xiaomei Xu   +4 more
doaj   +1 more source

Quality prevails over identity in the sexually selected vocalisations of an ageing mammal [PDF]

, 2010
BACKGROUND: Male sexually selected vocalisations generally contain both individuality and quality cues that are crucial in intra- as well as inter-sexual communication. As individuality is a fixed feature whereas male phenotypic quality changes with age,
Briefer, E, Vannoni, E, Briefer Elodie, Vannoni Elisabetta, McElligott, Alan G., McElligott, Alan G.; id_orcid, Vannoni, Elisabetta, Elisabetta Vannoni, Briefer, Elodie, McElligott Alan G, Elodie Briefer, Briefer, Elodie F., Alan G McElligott, McElligott, AG, McElligott, A G   +14 more
core   +1 more source

Scene-Driven Semantic Alignment for Generative Communication in Underwater Images

IET Signal Processing
Underwater images serve as one of the most intuitive media for human perception of underwater environments. However, the limited bandwidth and susceptibility to noise in underwater acoustic (UWA) channels pose significant challenges for traditional image
Yuetong Li, Zhenyu Jia, Yuyang Peng, Yi Zhu, Fei Yuan   +4 more
doaj   +1 more source

A Fish-Counting Method Using Fusion of Spatial Sensing and Temporal Information

Remote Sensing
In modern aquaculture, accurate and efficient fish counting is crucial for the optimization of resource management and the enhancement of production profitability.
Zhaozhi Wu, Xinze Zheng, Yi Zhu, Longhao Wu, Congcong Li, Qiang Tu, Fei Yuan   +6 more
doaj   +1 more source

Adaptive Underwater Acoustic Communications [PDF]

, 2010
Underwater wireless networks consist of mobile and static nodes, which usually communicate using the acoustic channel since radio transmissions attenuate rapidly and optical communication is only suitable for short distances. The underwater acoustic channel is plagued with issues of high transmission power requirements, rapidly changing channel ...
Anuj Sehgal, Jürgen Schönwälder
openaire   +1 more source

Energy-Efficient Distributed Compressed Sensing Data Aggregation for Cluster-Based Underwater Acoustic Sensor Networks

International Journal of Distributed Sensor Networks, 2016
Energy-efficient data aggregation is important for underwater acoustic sensor networks due to its energy constrained character. In this paper, we propose a kind of energy-efficient data aggregation scheme to reduce communication cost and to prolong ...
Deqing Wang, Ru Xu, Xiaoyi Hu, Wei Su
doaj   +1 more source

Multiuser chirp modulation for underwater acoustic channel based on VTRM

International Journal of Naval Architecture and Ocean Engineering, 2017
In this paper, an ascheme is proposed for multiuser underwater acoustic communication by using the multi-chirp rate signals. It differs from the well known TDMA (Time Division Multiple Access), FDMA (Frequency Division Multiple Access) or CDMA (Code ...
Fei Yuan, Qian Wei, En Cheng
doaj   +1 more source