Title:
ACOUSTIC ANALYSIS DEVICE AND ACOUSTIC ANALYSIS METHOD
Document Type and Number:
WIPO Patent Application WO/2019/189424
Kind Code:
A1
Abstract:
An acoustic analysis device 100 comprises: a first acquisition unit for acquiring three-dimensional model data 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 particle speed, which is a physical quantity indicating a sound characteristic, and for calculating the particle speed at an analysis point on a plane parallel to the measurement surface; a first alignment unit for performing alignment of the sound source surface and the analysis point; a second alignment unit for performing alignment of the three-dimensional model data and the sound source surface; and a display unit for displaying, in accordance with the result of each alignment, the three-dimensional model data so as to be deformed in accordance with the particle speed at the analysis point.
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Inventors:
TOYOSHIMA NAOKO (JP)
Application Number:
PCT/JP2019/013296
Publication Date:
October 03, 2019
Filing Date:
March 27, 2019
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
G01H3/00; H04R1/40
Foreign References:
| JP2016090289A | 2016-05-23 | |||
| US20110120222A1 | 2011-05-26 | |||
| JP2013528795A | 2013-07-11 | |||
| JP2000075014A | 2000-03-14 |
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, DOI: 10.20697/jasj.72.7_416
GOSEKI, MASAFUMI ET AL.: "Visualization of sound pressure distribution by combining microphone array processing and camera image processing", THE PROCEEDINGS OF JSME ANNUAL CONFERENCE ON ROBOTICS AND MECHATRONICS (ROBOMEC) 2011, vol. 11, 26 May 2011 (2011-05-26), pages 2P2-L02 (1) - 2P2-L02 (4), XP032165956, DOI: 0.1299/jsmermd.2011._2P2-L02_1
GOSEKI, MASAFUMI ET AL.: "Visualization of sound pressure distribution by combining microphone array processing and camera image processing", THE PROCEEDINGS OF JSME ANNUAL CONFERENCE ON ROBOTICS AND MECHATRONICS (ROBOMEC) 2011, vol. 11, 26 May 2011 (2011-05-26), pages 2P2-L02 (1) - 2P2-L02 (4), XP032165956, DOI: 0.1299/jsmermd.2011._2P2-L02_1
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