Title :
Noise reduction method for sinusoidal and wideband noise based on ALE and noise reconstruction filter
Author :
Sumi, Keisuke ; Sasaoka, Naoto ; Itoh, Yoshio ; Fuji, Kensaku ; Tsuiki, S.
Author_Institution :
Fac. of Eng., Tottori Univ., Japan
Abstract :
In this paper, a new noise reduction system for sinusoidal and wideband noise is proposed. We have proposed the cascaded structure of adaptive line enhancer (ALE) and noise reconstruction system (NRS). However, it has the problem that the quality of the enhanced speech signal is degraded. In order to solve this problem, a noise reduction system which is composed of two ALE and a noise reconstruction filter (NRF) is proposed. The two ALE are used to estimate the sinusoidal noise and the speech signal, respectively. In order to improve the quality of the enhanced speech, the NRF is used. We also propose a noise reduction system with feedback circuit to improve the quality of the enhanced speech more. Simulation results show the effectiveness of the proposed system.
Keywords :
adaptive filters; circuit feedback; parameter estimation; signal denoising; signal reconstruction; speech enhancement; ALE; NRS; adaptive line enhancer; cascaded structure; enhanced speech signal; feedback circuit; noise estimation; noise reconstruction filter; noise reconstruction system; noise reduction system; sinusoidal noise; speech quality; speech signal; wideband noise; Background noise; Circuit noise; Degradation; Electronic mail; Filters; Microphones; Noise reduction; Speech enhancement; Wideband; Working environment noise;
Conference_Titel :
Communications and Information Technology, 2004. ISCIT 2004. IEEE International Symposium on
Print_ISBN :
0-7803-8593-4
DOI :
10.1109/ISCIT.2004.1412909
