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Abstract

This paper reviews the history of the β€œclean audio” concept, the nature of the proposals and the limited scope of the work done in this area. It then examines the issues that would have to be investigated in order to justify the creation of a specific clean audio access service, using the development of the television audio description service as a comparison. It then explores the role of speech, sound effects and music in television sound and how they combine to create the complete narrative and what may happen if the sound is remixed by an automatic process. It also lists all the other factors which cause problems for our audience when trying to follow the speech content in television programmes. It then goes on to look at the progress made in recent years in providing alternative mixes as part of the work on an object based broadcasting which is an approach which can provide a wider set of tools for the personalisation of content.

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