Microphone Array Signal Processing with Asynchronous Recording Devices

2015 Fiscal Year Final Research Report

• Project/Area Number: 25280069
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Perceptual information processing
• Research Institution: National Institute of Informatics
• Principal Investigator: ONO Nobutaka 国立情報学研究所, 情報学プリンシプル研究系, 准教授 (80334259)
• Co-Investigator(Kenkyū-buntansha): MAKINO Shoji 筑波大学, システム情報工学系研究科(系), 教授 (60396190) ; MIYABE Shigeki 筑波大学, システム情報工学系研究科(系), 助教 (50598745)
• Co-Investigator(Renkei-kenkyūsha): SHINODA Koichi 東京工業大学, 情報理工学(系)研究科, 准教授 (10343097)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: マイクロフォンアレイ信号処理 / 非同期 / 分散 / 音源分離 / 音源定位

Outline of Final Research Achievements

Microphone array signal processing is an important technique to estimate the direction of arrival of sound or to enhance a target sound in noisy environment by processing multi-channel signals. In the microphone array signal processing, a tiny time difference between channels is important information. Therefore, multi-channel signals have to be recorded in a synchronized way in conventional framework. While in this study, we have developed a technique to synchronize recording signals or to estimate microphone positions without any a priori knowledge in order to use asynchronous individual recording devices such as smartphones, laptop PC, and IC recorder.

Free Research Field

音響信号処理