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Showing 1 to 4 of 4 for “"Ultrasonic communication"”.
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Encoding of Ultrasonic Communication Signals in Rat Auditory Cortex
All social animals require a means of communication, and for many species that need is filled by the use of vocalizations. While far less intricate than human speech, many animals employ systems of vocalizations in order to attract mates, convey information about the environment, or to express an …
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Design of energy-efficient ultrasonic communication systems on steel pipes
Ultrasonic communication provides an alternative to radio-frequency (RF) by transmitting guided ultrasonic signals along installed or buried metallic pipes. Buried pipe corrosion monitoring and intermittent infrastructure data collection are potential application areas, for which reliable wireless …
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Increasing the capacity of an ultrasonic communication systems using variable structure control
Narrow bandwidth transducers used in existing ultrasonic (US) data communication systems are known to be devices with a high Q resonant response and low coupling to both the electrical drive and acoustic interfaces. These features limit the speed of phase change when phase modulation (PM) is used. …
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Ultrasonic Communication and the Hormonal Modulation of Aggressive Behavior in the Female Hamster
… here show that hamsters of both sexes emit ultrasonic calls of 16-64 kHz and roughly 50 dB SPL. Ultrasounds by females encode information regarding reproductive state as well as location. In particular, female call rates are highest during estrus, suggesting that these signals function …