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Acoustic monitoring with miniature drones shows reduced Myotis bat occurrence with altitude and drone movement. [PDF]
Sci RepDobie L, Bird DM, Elliott KH.
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Acoustic cloaking and transformation acoustics
Journal of Physics D: Applied Physics, 2010In this review, we give a brief introduction to the application of the new technique of transformation acoustics, which draws on a correspondence between coordinate transformation and material properties. The technique is formulated for both acoustic waves and linear liquid surface waves.
Che Ting Chan +2 more
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Nature, 2016
Holographic techniques are fundamental to applications such as volumetric displays, high-density data storage and optical tweezers that require spatial control of intricate optical or acoustic fields within a three-dimensional volume. The basis of holography is spatial storage of the phase and/or amplitude profile of the desired wavefront in a manner ...
Peer Fischer +4 more
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Holographic techniques are fundamental to applications such as volumetric displays, high-density data storage and optical tweezers that require spatial control of intricate optical or acoustic fields within a three-dimensional volume. The basis of holography is spatial storage of the phase and/or amplitude profile of the desired wavefront in a manner ...
Peer Fischer +4 more
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2016
From the earliest stages of Greek thought, sound was thought to originate as the result of an impact between two objects. At first it was believed that the swiftness and force of the impact affected both volume and pitch; then it became clear that these were two different parameters.
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From the earliest stages of Greek thought, sound was thought to originate as the result of an impact between two objects. At first it was believed that the swiftness and force of the impact affected both volume and pitch; then it became clear that these were two different parameters.
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Redshift of acoustic waves in acoustic streaming
Physical Review E, 2003Redshift, namely, the frequency decline in the frequency spectrum of an acoustic wave in water, was observed by measuring the frequency spectrum of acoustic streaming in a standing wave field. We desire that relations of the energy epsilon and momentum mu of acoustic waves analogous to those under quantum conditions hold, that is, epsilon =n(p)h(omega),
Toshitaka Fujii +2 more
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The Journal of the Acoustical Society of America, 1966
The historical progress, of the science of acoustics is surveyed from the earliest recorded phenomena and theories to the present status of the subject. Considerable attention is paid to the development of both mathematical and experimental tools for studying the production, propagation, and reception of sound, particularly in the 18th and 19th ...
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The historical progress, of the science of acoustics is surveyed from the earliest recorded phenomena and theories to the present status of the subject. Considerable attention is paid to the development of both mathematical and experimental tools for studying the production, propagation, and reception of sound, particularly in the 18th and 19th ...
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Acoustical barrier with acoustical seal
The Journal of the Acoustical Society of America, 1994An acoustical barrier, an aperture and a pipe or cable passing therethrough wherein the aperture has a number of radially extending slits which define a plurality of radial sectors which also extend from the aperture. One or more grooves are arranged in the sectors concentrically about the aperture to increase the radial flexibility of the sectors so ...
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ACOUSTIC IMAGINATION AND ACOUSTIC HALLUCINATION
Archives of Neurology And Psychiatry, 1935Acoustic imagination has always attracted the attention of psychologists. Charcot distinguished three types of imagination in human beings: the optic, the auditory and the motor. It is generally supposed that the acoustic and the motor types are closely related to each other. Baerwald,1in a study of image types, mentioned acoustic imagination.
Sam Parker, Paul Schilder
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