This paper describes an experiment of lossless audio transmission over the IP network and introduces a prototype codec that combines lossless audio coding and variable bit rate video coding. In the experiment, 16 channel acoustic signals compressed by MPEG-4 ALS were transmitted from a live venue to a cafe via the IP network to provide high-quality music. At the cafe, received sound data were decoded losslessly and appropriately remixed for adjustment to the environment at the location. The combination of high-definition video and audio data enables fans to enjoy a musical performance at places other than the live venue at the same time. This experiment motivates us to develop a codec that guarantees audio quality.

Authors: Fujii, Tatsuya; Harada, Noboru; Kamamoto, Yutaka; Kim, Sunyong; Moriya, Takehiro; Ogawara, Masanori
Affiliations: NTT Communication Science Laboratories, Atsugi, Kanagawa, Japan; NTT Network Innovation Laboratories, Yokosuka, Kanagawa, Japan(See document for exact affiliation information.)
AES Convention: 129 (November 2010) Paper Number: 8302
Publication Date: November 4, 2010
Subject: Audio Transmission

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