Title:
EVALUATION METHOD, EVALUATION DEVICE, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/152759
Kind Code:
A1
Abstract:
The present invention reduces the number of conversation tests required for ICC quality evaluation. An evaluation value conversion device 3 evaluates the quality of a conversation carried out between a near-end acoustic area 100 and a far-end acoustic area 200 in a car in which a plurality of acoustic areas have been defined in advance. An audio signal collected by a microphone M2 disposed in the far-end acoustic area 200 is emitted from a speaker S1 disposed in the near-end acoustic area 100. An objective evaluation value acquisition unit 33 uses, as a sound to be evaluated, an audio signal obtained by adding an audio signal, in which a first audio signal uttered from a sound source at a seat in the far-end acoustic area 200 is collected by the microphone M2 and emitted from the speaker S1, and an audio signal, in which the first audio signal propagates through the space inside the car and reaches a seat in the near-end acoustic area 100. The objective evaluation value acquisition unit 33 acquires a first evaluation value using the first audio signal as a reference sound. An evaluation value reuse unit 37 acquires the first evaluation value as an evaluation value of conversation carried out between a seat in the near-end acoustic area 100 and a seat in the far-end acoustic area 200.
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Inventors:
KURIHARA SACHIKO (JP)
HARADA NOBORU (JP)
FUKUI MASAHIRO (JP)
NAKAGAWA AKIRA (JP)
HARADA NOBORU (JP)
FUKUI MASAHIRO (JP)
NAKAGAWA AKIRA (JP)
Application Number:
PCT/JP2020/003338
Publication Date:
August 05, 2021
Filing Date:
January 30, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04M9/00
Domestic Patent References:
| WO2017038727A1 | 2017-03-09 |
Foreign References:
| JP2016046695A | 2016-04-04 |
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
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