Patent
Acoustic manipulator element
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TLDR
In this article, an acoustic manipulator element is arranged relatively to an acoustic source in a manner that the acoustic manipulators element splits frequency selectively sound waves originating from the acoustic sources in a reflected and a through component, wherein at least a portion of the acoustic waves of the through component is attenuated by at most 15 dB for acoustic frequencies having a wavelength between 200 Hz and 16000 Hz compared to the sound waves of a source.Abstract:
According to an exemplary embodiment of the present invention, an acoustic manipulator element is provided. The acoustic manipulator element is arrangable relatively to an acoustic source in a manner that the acoustic manipulator element splits frequency selectively sound waves originating from the acoustic source in a reflected and a through component, wherein at least a portion of the acoustic waves of the through component is attenuated by at most 15 dB for acoustic frequencies having a wavelength between 200 Hz and 16000 Hz compared to the sound waves of the acoustic source.read more
Citations
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References
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Journal ArticleDOI
European Patent Office
TL;DR: Searching for information on foreign patents has always been a difficult task, especially before the advent of computer technology, but with the advance of the World Wide Web and recent improvements in Web browser technology, more options began to appear.
PatentDOI
Card reader for transmission of data by sound
Alan H. Grant,Richard J. Gambino +1 more
TL;DR: A portable card reader is designed to be carried in a wallet or purse as mentioned in this paper, where information is read from the card is converted to a sequence of electronic bursts of predetermined frequency, preferably in the audible or ultrasound range.
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Acoustic modeling system and method using pre-computed data structures for beam tracing and path generation
Ingrid Carlbom,Gary W. Elko,Thomas A. Funkhouser,Sarma Vgk Pingali,Man Mohan Sondhi,James E. West +5 more
TL;DR: In this article, a beam tree data structure is constructed to encode propagation paths, which may include specular reflection, transmission, diffuse reflection, and diffraction events, from the source location to regions of the input spatial model.
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Audio mirror speaker
TL;DR: In this article, an audio mirror speaker is constructed on a planar mirror surface and a directivity distribution is controlled by changing a relative position of a diaphragm facing the mirror.
Journal ArticleDOI
Program for the computation of absorptive silencers in straight ducts
TL;DR: Eckoldt et al. as discussed by the authors presented a computer program that allows the calculation of the insertion loss of splitter silencers in such a way that the results are comparable to results measured according to ISO 7235.