Title :
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
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;
Conference_Titel :
TENCON 99. Proceedings of the IEEE Region 10 Conference
Conference_Location :
Cheju Island
Print_ISBN :
0-7803-5739-6
DOI :
10.1109/TENCON.1999.818506
