Results 1 - 10 of 2,331

Aerial acoustic communications

by Cristina Videira Lopes, Pedro M. Q. Aguiar - in IEEE Workshop on the Applications of Signal Processing to Audio and Acoustics , 2001
"... This paper describes experiments in using audible sound as a means for wireless device communications. The direct application of standard modulation techniques to sound, without further improvements, results in sounds that are immediately perceived as digital communications and that are fairly aggre ..."
Abstract - Cited by 16 (7 self) - Add to MetaCart
. Our goal is to lay out the basis of sound design for aerial acoustic communications so that the presence of such communications, though noticeable, is not intrusive and can even be considered as part of musical compositions and sound tracks. 1.

UUV COVERT ACOUSTIC COMMUNICATIONS

by Paul Van Walree A, Thorsten Ludwig B, Connie Solberg C, Sangfelt D, Arto Laine E, Giacomo Bertolotto F, Anders Ishøy G
"... Abstract: The research project UUV Covert Acoustic Communications aims at furtive communication between unmanned underwater vehicles and a distant mother platform. Suitable modems were developed, which were tested in Norwegian coastal waters during a demonstration trial in September 2008. One modem ..."
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Abstract: The research project UUV Covert Acoustic Communications aims at furtive communication between unmanned underwater vehicles and a distant mother platform. Suitable modems were developed, which were tested in Norwegian coastal waters during a demonstration trial in September 2008. One modem

ACOUSTIC COMMUNICATIONS IN SHALLOW WATERS

by Sławomir Jastrzębski
"... The shallow water channel is an environment which is of particular interest to many research workers. An underwater acoustic channel is characterized as a multipath channel. Severe signal degradation can occur in such a channel due to multipath effects and the refractive properties of the channel, w ..."
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, which may include multiple interactions with the sea bottom and sea surface. Time-varying multipath propagation is one of the major factors that limit acoustic communication performance in shallow water. In this paper the results of an analysis of broadband shallow water acoustic signal was shown

Acoustic Communication in Wireless Sensor Networks

by Jingbin Zhang, Zhanxiang Huang, Xinyu Liu
"... Abstract: Acoustic communication has been widely used in undersea wireless networks. In this paper, we explore the use of acoustic communication in terrestrial wireless sensor networks. This work does not aim to replace the radio communication which is widely used in wireless sensor networks. Rather ..."
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Abstract: Acoustic communication has been widely used in undersea wireless networks. In this paper, we explore the use of acoustic communication in terrestrial wireless sensor networks. This work does not aim to replace the radio communication which is widely used in wireless sensor networks

Recent Developments in Covert Acoustical Communications

by Michael Hanspach, Michael Goetz
"... Abstract: The topic of covert acoustical communication in air has produced public attention, lately. In 2013, we presented the fact that infected drones (e.g. laptops) might form covert acoustical mesh networks in air, only utilizing the built-in speakers and microphones. In this article, we aim to ..."
Abstract - Cited by 1 (0 self) - Add to MetaCart
Abstract: The topic of covert acoustical communication in air has produced public attention, lately. In 2013, we presented the fact that infected drones (e.g. laptops) might form covert acoustical mesh networks in air, only utilizing the built-in speakers and microphones. In this article, we aim

Acoustic Communication for Medical Nanorobots

by Tad Hogg, Robert A. Freitas - Elsevier Nano Communication Networks
"... Communication among microscopic robots (nanorobots) can coordinate their activities for biomedical tasks. The feasibility of in vivo ultrasonic communication is evaluated for micron-size robots broadcasting into various types of tissues. Frequencies between 10 MHz and 300 MHz give the best tradeoff ..."
Abstract - Cited by 8 (0 self) - Add to MetaCart
between efficient acoustic generation and attenuation for communication over distances of about 100 microns. Based on these results, we find power available from ambient oxygen and glucose in the bloodstream can readily support communication rates of about 104bits/s between micron-sized robots. We discuss

Adaptive Underwater Acoustic Communications

by Anuj Sehgal, Jürgen Schönwälder
"... Abstract. 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 t ..."
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Abstract. 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

Acoustic Communication: The Precedence Effect

by Jens Blauert, Jonas Braasch
"... The acoustic modality is of paramount importance for human inter-individual communication. Conse-quently, the human auditory system is highly differentiated and able to perform sophisticated tasks such as the identification, recognition and segregation of concurrent sound sources in acoustically adv ..."
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The acoustic modality is of paramount importance for human inter-individual communication. Conse-quently, the human auditory system is highly differentiated and able to perform sophisticated tasks such as the identification, recognition and segregation of concurrent sound sources in acoustically

OFDM for Underwater Acoustic Communications

by Zhaohui Wang, G. B. Giannakis, Christian Raimund Berger, See Profile, Jie Huang, See Profile, Zhaohui Wang, Shengli Zhou, Georgios B. Giannakis, Christian R. Berger, Jie Huang , 2014
"... All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately. ..."
Abstract - Cited by 3 (0 self) - Add to MetaCart
All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.

Acoustic communication in the Lusitanian

by Toadfish Halobatrachus Didactylus
"... evidence for an unusual large vocal repertoire m.c.p. amorim1, j.m. sim ~oes1 and p.j. fonseca2 ..."
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evidence for an unusual large vocal repertoire m.c.p. amorim1, j.m. sim ~oes1 and p.j. fonseca2
Results 1 - 10 of 2,331