Active Noise Control System for Reducing MR Noise
スポンサーリンク
概要
- 論文の詳細を見る
We propose an active noise control (ANC) system for reducing periodic noise generated in a high magnetic field such as noise generated from magnetic resonance imaging (MRI) devices (MR noise). The proposed ANC system utilizes optical microphones and piezoelectric loudspeakers, because specific acoustic equipment is required to overcome the high-field problem, and consists of a head-mounted structure to control noise near the users ears and to compensate for the low output of the piezoelectric loudspeaker. Moreover, internal model control (IMC)-based feedback ANC is employed because the MR noise includes some periodic components and is predictable. Our experimental results demonstrate that the proposed ANC system (head-mounted structure) can significantly reduce MR noise by approximately 30dB in a high field in an actual MRI room even if the imaging mode changes frequently.
論文 | ランダム
- EC会社法の現状とヨ-ロッパ株式会社法案-5-
- EC会社法の現状とヨ-ロッパ株式会社法案-3-
- EC会社法の現状とヨ-ロッパ株式会社法案-2-
- EC会社法の現状とヨ-ロッパ株式会社法案-1-
- 日本産魚類のウイルス病に関する研究―VIII. : IHNV感染によりRTG-2細胞が産生するインターフェロン