Title:
音響特性測定システム、音響特性測定方法、および音響特性測定プログラム
Document Type and Number:
Japanese Patent JP7351193
Kind Code:
B2
Abstract:
To provide an acoustic characteristic measuring system with which it is possible to extract, from a collected sound signal that includes noise, a measurement object sound that is generated by a measurement object.SOLUTION: An acoustic characteristic measuring system comprises a first microphone, a second microphone, first collected sound spectrum calculation means, second collected sound spectrum calculation means, measurement object sound on/off control means, and measurement object sound spectrum calculation means. The first microphone, the second microphone and the measurement object are arranged in a prescribed physical relationship. The measurement object sound spectrum calculation means holds the measurement object sound spectrum collected by the first and second microphones in a noise-free environment as first and second reference spectra. Then, when the measurement object sound is turned on/off, it removes the influence of noise and calculates a measurement object sound spectrum using the first and second collected sound spectra when the measurement object sound is turned on in a specific session, the first and second collected sound spectra when the measurement object sound is turned off before and after the session, and the first and second reference spectra.SELECTED DRAWING: Figure 1
Inventors:
Masao Tanebashi
Application Number:
JP2019210300A
Publication Date:
September 27, 2023
Filing Date:
November 21, 2019
Export Citation:
Assignee:
NEC
International Classes:
G01H3/00; H04R3/00
Domestic Patent References:
| JP2009276334A | ||||
| JP2002022530A | ||||
| JP5043979B2 |
Foreign References:
| WO2018173267A1 | ||||
| WO2004034734A1 |
Attorney, Agent or Firm:
Masahiko desk
Keiji Kitajima
Keiji Kitajima