Acoustic Communication
Digital Underwater Acoustic Communication Simulator
... underwater acoustic communication mainly in echo "echo ranging" communication in which the sound was emitted either at extremely low frequencies or high frequencies, the sonar principle that ...
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Development of vocalization, auditory sensitivity and acoustic communication in the Lusitanian toadfish Halobatrachus didactylus
... of acoustic communication has so far only been investigated in one fish ...that acoustic communication in the Lusitanian toadfish might be absent in early developmental stages and seems to ...
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Acoustic communication in insect disease vectors
... sexual communication, sexual selection and modes of specia- ...vectors, acoustic com- munication studies may also provide practical ...of acoustic communication can con- tribute to vector ...
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Assessing acoustic communication active space in the Lusitanian toadfish
... in acoustic communication as it has implications for the function and evolution of acoustic ...the communication range of the Lusitanian toadfish ’s (Halobatrachus didactylus) advertisement ...
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Acoustic communication and vocalization microhabitat in Ameerega braccata (Steindachner, 1864) (Anura, Dendrobatidae) from Midwestern Brazil
... The production of sound in animals is generally used to advertise conspecifics (Duellman and Trueb, 1994; Lingnau and Bastos, 2003). In anurans, acoustic communication plays an essential role in ...
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Underwater acoustic communication system : performance evaluation of digital modulation techniques
... a communication channel. As in other communication channels, the underwater channel has some properties/features which influence the development of Acoustic COMmunication (ACOM) ...The ...
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Acoustic communication in the Red-vented Bulbul Pycnonotus cafer
... This paper deals with acoustic communication in the Red-vented Bulbul Pycnonotus cafer. This species emits a high variety of vocal signals that can be classified on the basis of their acoustical features ...
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Acoustic communication in the Lusitanian toadfish, Halobatrachus didactylus: Evidence for an unusual large vocal repertoire
... The Lusitanian toadfish Halobatrachus didactylus (Bloch & Schneider) (Batrachoididae) is a well-known sound producer that has an unusual large acoustic repertoire for fish. This repertoire consists so far of five ...
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Acoustic communication in two species of the Hypsiboas albopunctatus group (Anura: Hylidae) in sympatry and allopatry
... the acoustic parameters of two frogs of the Hypsiboas albopunctatus species group ...of communication in anurans, and is one of the best ways to discriminate among ...
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Underwater acoustic communication using a time-reversal mirror approach
... acoustical communication systems coherent modulation seems to be the most viable option for obtaining high data rates in the ocean, where the available bandwidth is inherently restricted as a result of ...
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Environmental-friendly underwater acoustic communication and networks
... take advantage of channel diversity introduce noise / array gain. S.M[r] ...
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An Empirical Study of Underwater Acoustic Sensor Network and Terrestrial Wireless Network
... Underwater Acoustic Sensor Network (UASN): A collection of sensor nodes which communicates among them through the emerging underwater acoustic communication technology is known as ...UASN. ...
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Underwater Acoustic simulations with a time variable acoustic propagation model
... the communication signals, which is an extremely difficult task due to the propagation model computation time consumption and to the resulting extremely large amount of ...underwater acoustic ...
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UAN: underwater acoustic network
... for acoustic waves in which regards long range propagation but poses a number of challenges in terms of available bandwidth, Doppler spread and channel ...where acoustic propagation becomes predominantly ...
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UNDERWATER ACOUSTIC CHANNEL MODELING PROPOSAL FOR SHALLOW WATER COMMUNICATION LINK OPTIMIZATION
... The main goal of this paper is to model part of the problem, studying the waveguide energy transmission behavior using modal propagation under certain boundary conditions to analyze qualitatively energy flux along of the ...
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Wideband and wide beam polyvinylidene difluoride (PVDF) acoustic transducer for broadband underwater communications
... Acoustic communication systems have been widely used in underwater environments, since acoustic waves have low attenuation at low frequencies (up to tens of kHz), reaching large ...distances. ...
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Communication in troubled waters: Responses of fish communication systems to changing environments
... of acoustic signals (Table ...fish communication depends on the duration and frequency of noise exposure (acute or chronic), degree of overlap of the sound frequency spectrum, and distance to the noise ...
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Braz. j. . vol.81 número5
... Introduction: Acoustic reflectance is an important tool in the assessment of middle ear afflic- tions, and the method is considered advantageous in relation to ...contralateral acoustic stimulation and its ...
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Rev. Bras. . vol.72 número1 en a09v72n1
... acoustic reflex threshold reduction does not depend on the frequency of the facilitating stimulus. They were able to observe threshold reductions at various frequencies (500 Hz, 1, 2, 4 and 6 kHz), suggesting that ...
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Liquid rocket combustion chamber acoustic characterization
... of acoustic modes with the combustion and/or luid dynamic processes inside the combustion ...an acoustic mode, combustion instability can be ...applying acoustic techniques, must be taken to ...
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