Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study of Speech Coding for the Transmission on Network by the Wavelet Packets

Wavelet Packet을 이용한 Network 상의 음성 코드에 관한 연구

  • Baek, Han-Wook (Dept. of Control & Instrumentation Engineering, Kwangwoon Univ.) ;
  • Chung, Chin-Hyun (Dept. of Control & Instrumentation Engineering, Kwangwoon Univ.)
  • 백한욱 (광운대학교 제어계측 공학과) ;
  • 정진현 (광운대학교 제어계측 공학과)
  • Published : 2000.07.17
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Abstract

In general. a speech coding is dedicated to the compression performance or the speech quality. But. the speech coding in this paper is focused on the performance of flexible transmission to the, network speed. For this. the subbanding coding is needed. which is used the wavelet packet concept in the signal analysis. The extraction of each frequency-band is difficult to general signal analysis methods, after coding each band, the reconstruction of these is also a difficult problem. But. with the wavelet packet concept(perfect reconstruction) and its fast computation algorithm. the extraction of each band and the reconstruction are more natural. Also, this paper describes a direct solution of the voice transmission on network and implement this algorithm at the TCP/IP network environment of PC.

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