奈米工程與微系統研究所　書報討論

Seminar of Inst. NanoEngineering and MicroSystems

Bai, Ming-Sian

Professor

Department of Power Mechanical Engineering

National Tsing Hua University

Acoustic Array Systems in a Nutshell

Abstract:

Previously, microphone arrays were used extensively used in beam-forming and estimation of source direction in speech enhancement problems. In this presentation, I will cover two other relatively less addressed problems: noise source identification and sound field visualization.  Specifically, using these techniques, one is able to locate and even quantify noise sources.  In addition, sound field distribution can be “visualized” by calculating the acoustical variables: pressure, particle velocity, and sound intensity. Fundamental field representations are introduced, among which the equivalent source method is utilized to bring together the farfield and nearfield arrays under a unified framework. With comprehensive treatment of microphone and loudspeaker arrays, the talk covers an introduction to the theory, array models, far-field and near-field array signal processing algorithms, practical implementations, and common applications, such as vehicles, computing and communications equipment, compressors, fans, and household appliances.

15:30-17:20 on Dec. 18(Mon), 2017 at Room 108 of Eng. Building I

Host：Prof. Chao-An Lin calin@pme.nthu.edu.tw Ext:42602

Contact：Praveen praveenbowler@gmail.com  Mobile: 0909537757