A Real-Time IMT-2000 Audio Transmission System

Takeshi Mori, Takao Kaneko, Takehiro Moriya, Kazunaga Ikeda

研究成果: Article査読

抄録

For real-time audio streaming services over nextgeneration mobile phone systems, such as live concert broadcasting and radio relaying, we have developed a realtime IMT-2000 audio transmission system. This system consists of a real-time encoder and a portable real-time decoder, which are both based on fixed-point DSP chips. TwinVQ technology is used for audio compression, and a scheme to protect audio data against bit-errors was designed based on error sensitivity observations. Selfsynchronization and adaptive error concealment are carried out at the decoder. We confirmed that the system can transmit high-quality stereo audio samples at 32 kHz with a total bit rate of 64 kbit/s over a simulated IMT-2000 channel. We also checked that this system can connect to a real IMT-2000 experimental network, and found that it is easily applicable to various audio streaming services.

本文言語English
ページ(範囲)860-866
ページ数7
ジャーナルIEEE Transactions on Consumer Electronics
47
4
DOI
出版ステータスPublished - 2001 11
外部発表はい

ASJC Scopus subject areas

  • Media Technology
  • Electrical and Electronic Engineering

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