Results 261 to 270 of about 5,052,408 (312)
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Bidirectional equalization for underwater acoustic communication
Journal of the Acoustical Society of America, 2012The bidirectional decision feedback equalizer (BiDFE) that combines the outputs of a conventional decision feedback equalizer (DFE) and backward DFE can improve the performance of the conventional DFE by up to 1–2 dB based on simulations. In this letter, the BiDFE concept is extended to multichannel time reversal communications involving a DFE as a ...
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Acoustic Communication in Noise
2005Publisher Summary Environmental noise can affect acoustic communication through limiting the broadcast area, or active space, of a signal by decreasing signal-to-noise ratios at the position of the receiver. At the same time, noise is ubiquitous in all habitats and is, therefore, likely to disturb animals, as well as humans, under many circumstances.
Brumm, H., Slabbekoorn, H.
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The Journal of the Acoustical Society of America, 2004
Those aspects of acoustics which concern the relations of acoustics to the information and communication technologies are now frequently called ‘‘communication acoustics.’’ After a short review of the history of this field, relevant results from recent research at the Institute of Communication Acoustics at the Ruhr-University of Bochum, Germany, will ...
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Those aspects of acoustics which concern the relations of acoustics to the information and communication technologies are now frequently called ‘‘communication acoustics.’’ After a short review of the history of this field, relevant results from recent research at the Institute of Communication Acoustics at the Ruhr-University of Bochum, Germany, will ...
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The importance of acoustic reflex for communication
American Journal of Otolaryngology, 2011The purpose of the study was to compare the speech recognition capacity between listeners with and without acoustic reflex using different types of noises and intensities.We studied 18 women allocated to 2 groups: acoustic reflex present (20 ears) and absent (16 ears).
Kelly Cristina Lira, de Andrade +5 more
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The acoustic climate of plant communities
Oecologia, 1976During summer season and winter season of 1971 and 1972, the acoustic properties, defined as the acoustic climate, of 8 semi-natural plant communities in the Netherlands were investigated. It appeared that each plant community has its own acoustic climate as a consequence of the specific species composition and the specific acoustic properties of the ...
H F, Linskens +6 more
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Habitat acoustics and primate communication
American Journal of Primatology, 1986AbstractThe acoustic characteristics of three tropical habitats were investigated to determine how they might constrain the structure of primate signals. Ambient noise was measured, along with signal attenuation and aspects of signal degradation (reverberation, amplitude fluctuations, and pulse train modulation depth). These measures allowed estimation
Peter M, Waser, Charles H, Brown
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OFDMA for underwater acoustic communications
2011 49th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2011We investigate the possibility of using orthogonal frequency division multiple access (OFDMA) for design of efficient underwater acoustic (UWA) networks. The major challenge for the OFDMA-based UWA communication systems is the Doppler-induced frequency scaling, which may cause severe intercarrier interference (ICI), and depending on the particular user
Kai Tu +3 more
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2005
Communication Acoustics deals with the fundamentals of those areas of acoustics which are related to modern communication technologies. Due to the advent of digital signal processing and recording in acoustics, these areas have enjoyed an enormous upswing during the last 4 decades.
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Communication Acoustics deals with the fundamentals of those areas of acoustics which are related to modern communication technologies. Due to the advent of digital signal processing and recording in acoustics, these areas have enjoyed an enormous upswing during the last 4 decades.
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Semio-acoustics: a domain of communication acoustics
The Journal of the Acoustical Society of America, 2008For user-oriented design of modern information and communication systems we investiate the perception of acoustic signals as sign carriers: How do listeners process acoustic/auditory events when they treat them as information carriers and which meaning do they associate with them?
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2018
This chapter, takes a broad look at insect acoustic communication, by including near-field and far-field sound, as well as substrate vibration, as signals. These mechanical disturbances differ greatly in their physical properties—they propagate in their natural environments over distances that can span from a few millimetres up to several hundred ...
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This chapter, takes a broad look at insect acoustic communication, by including near-field and far-field sound, as well as substrate vibration, as signals. These mechanical disturbances differ greatly in their physical properties—they propagate in their natural environments over distances that can span from a few millimetres up to several hundred ...
openaire +1 more source