2009 Fiscal Year Final Research Report
The method for estimating the optimum speech level in public spaces considering universal design
| Project/Area Number |
20760389
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Architectural environment/equipment
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| Research Institution | Kobe University |
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Principal Investigator |
SATO Hayato Kobe University, 大学院・工学研究科, 助教 (30346233)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 音・振動環境 / 拡声設備 / 残響音 / 騒音 / ラウドネス |
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| Research Abstract |
The methods for estimating the optimum speech level from physical acoustic parameters were investigated based on listening tests. The results showed that (1) the optimum speech level in reverberant sound fields should be set to make speech loudness expressed in the sound pressure level of direct speech from 55 to 60 dBA, (2) the optimum parameters for speech amplification in the sound fields where background noise level rapidly shifts were suggested.
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