Development on Transient Noise Reduction with Adaptive Filter Based on High Order Statistic

2014 Fiscal Year Final Research Report

• Project/Area Number: 24760300
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Communication/Network engineering
• Research Institution: Tottori University
• Principal Investigator: SASAOKA Naoto 鳥取大学, 工学(系)研究科(研究院), 助教 (80432607)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 信号処理 / 補聴器 / 適応フィルタ / 音声強調 / 高次統計量

Outline of Final Research Achievements

Transient noise reduction system, which can be introduced into a hearing aid, has been investigated. A conventional noise reduction system cannot reduce the transient noise, because it assumes that the characteristic of background noise is static or slowly changed. In order to solve the problem, an adaptive filter based on high order statistic has been proposed. The proposed system takes advantage of difference high order statistic between speech and transient noise. In addition, a noise frame detection and reduction system has been proposed to improve the noise reduction ability at the beginning of noise generation.

Free Research Field

工学