Efficient speech enhancement using spectral subtraction for car hands-free applications

Author

Wu, Kuo-Guan ; Chen, Po-Cheng

Author_Institution

Adv. Technol. Center, Ind. Technol. Res. Inst., Hsinchu, Taiwan

fYear

2001

fDate

2001

Firstpage

220

Lastpage

221

Abstract

Over-subtraction of noise spectrum to enhance noisy speech has been proven an effective method. However, this method suffers from the tradeoff between speech distortion and musical noise artifacts. In this paper, we modify the original method to alleviate the tradeoff problem while retaining its simplicity. The proposed algorithm has been incorporated into the design of a car kit which is implemented on a low-cost fixed-point DSP with capabilities of voice dialing, echo cancellation and speech enhancement

Keywords

acoustic noise; cellular radio; digital signal processing chips; echo suppression; spectral analysis; speech enhancement; speech recognition; car hands-free applications; car kit; echo cancellation; efficient speech enhancement; low-cost fixed-point DSP; musical noise artifact; noise spectrum; noisy speech; over-subtraction; spectral subtraction; speech distortion; speech enhancement; voice dialing; Application software; Automatic speech recognition; Cellular phones; Communication industry; Digital signal processing; Signal processing algorithms; Signal to noise ratio; Speech coding; Speech enhancement; Speech recognition;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, 2001. ICCE. International Conference on

Conference_Location

Los Angeles, CA

Print_ISBN

0-7803-6622-0

Type

conf

DOI

10.1109/ICCE.2001.935283

Filename

935283