標題: | Perceptual Multiband Spectral Subtraction for Noise Reduction in Hearing Aids |
作者: | Wei, Cheng-Wen Tsai, Cheng-Chun Chang, Tian-Sheuan Jou, Shyh-Jye 電子工程學系及電子研究所 Department of Electronics Engineering and Institute of Electronics |
關鍵字: | Noise Reduction;Hearing Aids;Low Power Design |
公開日期: | 2010 |
摘要: | This paper presents a low complexity noise reduction method by a perceptual multiband spectral subtraction for CIC type hearing aids. The noisy speech is first perceptually decomposed by a 1/3 octave filter bank by ANSI S1.11, and the noise is estimated by an enhanced entropy based voice activity detection (VAD), and then noise is subtracted by a simple multiband spectral subtraction. Simulations show that under different environments the proposed algorithm averagely improves segmental SNR (Signal to Noise Ratio) and PESQ (Perceptual Evaluation of Speech Quality) by 6.27dB and 0.32, respectively, and performs better compared to the previous approach. In addition, informal listening test shows there is not musical noise in the processed speech. |
URI: | http://hdl.handle.net/11536/14613 |
ISBN: | 978-1-4244-7456-1 |
期刊: | PROCEEDINGS OF THE 2010 IEEE ASIA PACIFIC CONFERENCE ON CIRCUIT AND SYSTEM (APCCAS) |
起始頁: | 692 |
結束頁: | 695 |
Appears in Collections: | Conferences Paper |