Propagation of sound

Research output: Chapter in Book/Report/Conference proceedingBook chapterCommunication

Abstract

As an acoustic signal travels from the source to a receiver, it is affected by a variety of physical processes, all dictated by properties of the signal and the environment. The signal energy is weakened by geometric attenuation as well as absorption by the medium. The temporal and spectral properties can be modified by sound absorption, refraction, and interference from multi paths caused by reflections.The path from the source to the receiver may be bent due to refraction. Besides geometrical attenuation, the ground effect and turbulence are the most important mechanisms to influence communication sounds for airborne acoustics and bottom and surface effects for underwater sounds. Refraction becomes very important close to shadow zones. For echolocation signals, geometric attenuation and sound absorption have the largest effects on the signals.
Original languageEnglish
Title of host publicationComparative Bioacoustics : An Overview
EditorsCharles Brown, Tobias Riede
Place of PublicationSharjah, UAE
PublisherBentham Science Publishers
Publication date5. Jan 2017
Pages62-119
Chapter2
ISBN (Print)978-1-68108-318-6
ISBN (Electronic)978-1-68108-317-9
Publication statusPublished - 5. Jan 2017

Cite this

Wahlberg, M., & Larsen, O. N. (2017). Propagation of sound. In C. Brown, & T. Riede (Eds.), Comparative Bioacoustics: An Overview (pp. 62-119). Sharjah, UAE: Bentham Science Publishers.
Wahlberg, Magnus ; Larsen, Ole Næsbye. / Propagation of sound. Comparative Bioacoustics: An Overview. editor / Charles Brown ; Tobias Riede. Sharjah, UAE : Bentham Science Publishers, 2017. pp. 62-119
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Wahlberg, M & Larsen, ON 2017, Propagation of sound. in C Brown & T Riede (eds), Comparative Bioacoustics: An Overview. Bentham Science Publishers, Sharjah, UAE, pp. 62-119.

Propagation of sound. / Wahlberg, Magnus; Larsen, Ole Næsbye.

Comparative Bioacoustics: An Overview. ed. / Charles Brown; Tobias Riede. Sharjah, UAE : Bentham Science Publishers, 2017. p. 62-119.

Research output: Chapter in Book/Report/Conference proceedingBook chapterCommunication

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N2 - As an acoustic signal travels from the source to a receiver, it is affected by a variety of physical processes, all dictated by properties of the signal and the environment. The signal energy is weakened by geometric attenuation as well as absorption by the medium. The temporal and spectral properties can be modified by sound absorption, refraction, and interference from multi paths caused by reflections.The path from the source to the receiver may be bent due to refraction. Besides geometrical attenuation, the ground effect and turbulence are the most important mechanisms to influence communication sounds for airborne acoustics and bottom and surface effects for underwater sounds. Refraction becomes very important close to shadow zones. For echolocation signals, geometric attenuation and sound absorption have the largest effects on the signals.

AB - As an acoustic signal travels from the source to a receiver, it is affected by a variety of physical processes, all dictated by properties of the signal and the environment. The signal energy is weakened by geometric attenuation as well as absorption by the medium. The temporal and spectral properties can be modified by sound absorption, refraction, and interference from multi paths caused by reflections.The path from the source to the receiver may be bent due to refraction. Besides geometrical attenuation, the ground effect and turbulence are the most important mechanisms to influence communication sounds for airborne acoustics and bottom and surface effects for underwater sounds. Refraction becomes very important close to shadow zones. For echolocation signals, geometric attenuation and sound absorption have the largest effects on the signals.

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Wahlberg M, Larsen ON. Propagation of sound. In Brown C, Riede T, editors, Comparative Bioacoustics: An Overview. Sharjah, UAE: Bentham Science Publishers. 2017. p. 62-119