An acoustic noise suppression system with reduced musical artifacts

Author

Adrian, Victor ; Gwee, Bah-Hwee ; Chang, Joseph S.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore

fYear

2006

fDate

21-24 May 2006

Lastpage

2532

Abstract

In this paper, we propose an acoustic noise suppression system with reduced musical artifacts for digital hearing instruments (aids). The proposed system features the capabilities to detect, estimate and suppress the acoustic noise corrupting an input speech. The algorithms in the system consist of two noise detections, an enhanced parametric spectral subtraction, a noise attenuation and transition smoothing window, and an automatic gain control. Simulation results on several stationary and nonstationary noise show that our acoustic noise suppression system is capable of improving signal-to-noise ratio by > 9 dB and reducing musical artifacts

Keywords

acoustic signal processing; automatic gain control; hearing aids; noise abatement; speech processing; acoustic noise suppression; automatic gain control; digital hearing instruments; musical artifacts; noise attenuation; noise detections; nonstationary noise; parametric spectral subtraction; signal-to-noise ratio; stationary noise; transition smoothing window; Acoustic noise; Acoustic signal detection; Attenuation; Auditory system; Gain control; Instruments; Noise reduction; Signal to noise ratio; Smoothing methods; Speech enhancement;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Conference_Location

Island of Kos

Print_ISBN

0-7803-9389-9

Type

conf

DOI

10.1109/ISCAS.2006.1693138

Filename

1693138