Development of real-time methods of evaluating speech quality in rooms focusing on conservation degree of physical characteristics of speech

2015 Fiscal Year Final Research Report

• Project/Area Number: 24760467
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Architectural environment/equipment
• Research Institution: Kobe University
• Principal Investigator: SATO Hayato 神戸大学, 工学(系)研究科(研究院), 准教授 (30346233)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 音声品質 / 実時間評価 / フィードバック

Outline of Final Research Achievements

By focusing on conservation degree of physical characteristics of speech at the listening point, real-time methods of evaluating speech quality in rooms, specifically, a method of reducing the time required for measurement of physical indicators of speech intelligibility, a loudness estimation method of reverberated speech, and a speech intelligibility estimation method from the listening point signal in conditions of low SN ratio were investigated. Furthermore, as an example of its application, it demonstrated that visually feedback of a real-time evaluation can suppress the increase of excessive vocal level.

Free Research Field

環境音響学