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Patent Searching and Data


Title:
ACOUSTIC ANALYSIS DEVICE AND ACOUSTIC ANALYSIS METHOD
Document Type and Number:
WIPO Patent Application WO/2019/189417
Kind Code:
A1
Abstract:
An acoustic analysis device 100 comprises: a first acquisition unit for acquiring an image of a sound source surface of an object to be measured; a second acquisition unit for acquiring three-dimensional location information of a point on the sound source surface; a third acquisition unit for acquiring three-dimensional location information of a point on a measurement surface of a microphone array arranged in the vicinity of the sound source surface; a calculation unit for calculating, from a sound signal acquired by the microphone array, a three-dimensional distribution of a physical quantity indicating a sound characteristic, and for calculating the physical quantity at an analysis point on a plane parallel to the measurement surface; an alignment unit for performing alignment of the sound source surface and the analysis point on the basis of the three-dimensional location information of the point on the sound source surface and the three-dimensional location information of the point on the measurement surface; and a display unit for displaying, in accordance with the result of alignment by the alignment unit, an image indicating the physical quantity at the analysis point so as to overlap the image of the sound source surface.

Inventors:
TOYOSHIMA NAOKO (JP)
Application Number:
PCT/JP2019/013284
Publication Date:
October 03, 2019
Filing Date:
March 27, 2019
Export Citation:
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Assignee:
NIDEC CORP (JP)
International Classes:
G01H3/00; H04R1/40
Foreign References:
JP2016090289A2016-05-23
US20110120222A12011-05-26
JP2013528795A2013-07-11
JP2000075014A2000-03-14
Other References:
NAGATOMO, HIROSHI: "Noise source identification system", THE JOURNAL OF THE ACOUSTICAL SOCIETY OF JAPAN, vol. 72, no. 7, 2016, pages 416 - 417, XP055640367
GOSEKI, MASAFUMI ET AL.: "Visualization of Sound Pressure Distribution by Combining Microphone Array Processing and Camera Image Processing (Digital Human", THE PROCEEDINGS OF THE 2011 JSME ANNUAL CONFERENCE ON ROBOTICS AND MECHATRONICS (ROBOMEC, 26 May 2011 (2011-05-26)
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