Basic study on cooperative sensor network for urban environment using passive acoustic tomography

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K14074
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Architectural environment/Equipment
• Research Institution: Niigata University
• Principal Investigator: Takuya Oshima 新潟大学, 自然科学系, 准教授 (40332647)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 建築環境・設備 / 環境計測 / 音響センシング / クロススペクトル法

Outline of Final Research Achievements

The applicability of a measurement method of mean wind velocity and temperature using bidirectional acoustic propagation time between two points of several ten or hundred meters distance, which is a representative urban scale. In this project, the applicability of the measurement method for road traffic noise that is considered a representative sound source when measurement lines are placed along and perpendicular to the source road, and for urban background noise scene where no outstanding sound source is present is studied by model calculation and actual measurements. From the results, it is found that for the perpendicular direction, reasonable wind velocity is obtained by the model calculation and measurements. On the other hand, for the parallel direction and the background noise cases, the model calculation produced reasonable results whereas larger errors were observed through the measurements.

Free Research Field

環境音響学