Topic
Acoustic interferometer
About: Acoustic interferometer is a research topic. Over the lifetime, 1493 publications have been published within this topic receiving 19355 citations.
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Patent•
13 Jul 2010
TL;DR: 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.
3 citations
TL;DR: In this paper, the velocity of ultrasonic waves at frequencies 226, 523, 800 and 1455 kHz at 0.985°K was determined and the velocity as a function of frequency was constant within 1/2400.
3 citations
TL;DR: In this paper, the authors show how bulk waves are radiated by the charge source on the surface of a semi-infinite piezoelectric solid, and evaluate the expression for each component of bulk waves in the form of the Fourier integral, by assuming that the observation point is far from the source in comparison with a wavelength.
Abstract: A spurious response due to bulk waves has often been observed in surface-acoustic filters. This paper shows how bulk waves are radiated by the charge source on the surface of a semi-infinite piezoelectric solid. The expression for each component of bulk waves is evaluated asymptotically, in the form of the Fourier integral, by assuming that the observation point is located far from the source in comparison with a wavelength. In doing this, the method of steepest descents is used in order to integrate analytically. The numerical results are obtained for rotated Y-cut X-propagating LiNbO3 and Y-Z LiNbO3. These results are in good agreement with the experiment reported by Togami and Chiba.
3 citations
03 Nov 2017
3 citations
01 Oct 2006
TL;DR: In this paper, a method that uses lateral coupling to generate the ultrasound waves was tested for reducing the electrical impedance of small phased array elements, which can be controlled by the cylinder wall thickness while the operation frequency was determined by the length of the cylinder.
Abstract: A method that uses lateral coupling to generate the ultrasound waves was tested for reducing the electrical impedance of small phased array elements. Cylindrical, radially polled transducer elements were driven in their length mode. The electrical impedance could be controlled by the cylinder wall thickness while the operation frequency was determined by the length of the cylinder. Acoustic intensity (averaged over the cylinder diameter) over 10 W/cm2 was measured from these elements
3 citations