What is it about?
Sound engineers listened and commented on radio drama scenes that had been remixed for different loudspeaker configurations. This allowed us to understand what would make good mixes in each case. This is then being used to draw up automatic mixing rules to automated the process, because with audio being consumed on so many systems nowadays, it is impossible for a sound engineer to check mixes for all of them.
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Why is it important?
Up until now, audio has tended to be distributed in a fixed format (e.g. stereo) and that is used across different loudspeaker configurations. In the future, more audio will be distributed unmixed, allowing the final blend of sounds to be made in the home. The new format is Object Based Audio, and it allows bespoke mixes. For example the balance between the dialogue and background sounds can be personalised to ensure greater intelligibility for people with a hearing impairment.
Perspectives
While it is possible to get great spatial audio in the laboratory, it is impossible in most homes. People don't want to reconfigure their living rooms and set up large numbers of loudspeakers. The experiments in this paper are part of the S3A project, which is investigating how to improve spatial audio for homes without requiring people to turn their living rooms into an acoustic laboratory.
Professor Trevor J Cox
University of Salford
Read the Original
This page is a summary of: Elicitation of Expert Knowledge to Inform Object-Based Audio Rendering to Different Systems, Journal of the Audio Engineering Society, February 2018, Audio Engineering Society,
DOI: 10.17743/jaes.2018.0001.
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