Integrated speech enhancement system for hands-free mobile communication

Author

Park, Kyusik ; Bang, Sungil ; Kim, Yonyen

Author_Institution

Dept. of Inf. & Telecommun., Sangmyung Univ., Chonan, South Korea

Volume

1

fYear

1999

fDate

1999

Firstpage

682

Abstract

In this paper, we present an integrated speech enhancement system for hands-free mobile communication. The proposed system incorporates both an acoustic echo cancellation and engine noise reduction device to provide signal enhancement from the echo plus noisy environments. The system is implemented with a delayless subband adaptive structure for the acoustic echo cancellation operation and a cascaded NLMS adaptive noise canceller for selective engine noise attenuation. Computer simulations are conducted to demonstrate the effectiveness of the system and the simulation results confirm the system performance of at least 20 dB ERLE in acoustic echo cancellation and 9 dB engine noise attenuation in the dominant frequency component

Keywords

acoustic signal processing; adaptive signal processing; cascade networks; echo suppression; land mobile radio; least mean squares methods; noise abatement; speech enhancement; 20 dB; 9 dB; acoustic echo cancellation; cascaded NLMS adaptive noise canceller; delayless subband adaptive structure; engine noise reduction device; hands-free mobile communication; integrated speech enhancement system; Acoustic devices; Acoustic noise; Attenuation; Computer simulation; Echo cancellers; Engines; Noise cancellation; Noise reduction; Speech enhancement; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON 99. Proceedings of the IEEE Region 10 Conference

Conference_Location

Cheju Island

Print_ISBN

0-7803-5739-6

Type

conf

DOI

10.1109/TENCON.1999.818506

Filename

818506