Title :
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
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;
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
DOI :
10.1109/ISCAS.2006.1693138
