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A NEW SET OF DIRECTIONAL WEIGHTS FOR ITU-R BS.1770 LOUDNESS MEASUREMENT OF MULTICHANNEL AUDIO

Pires, Leandro, Vieira, Maurilio, Yehia, Hani, Brookes, Tim and Mason, Russell (2020) A NEW SET OF DIRECTIONAL WEIGHTS FOR ITU-R BS.1770 LOUDNESS MEASUREMENT OF MULTICHANNEL AUDIO ICT Discoveries.

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Abstract

The ITU-R BS.1770 multichannel loudness algorithm performs a sum of channel energies with weighting coefficients based on azimuth and elevation angles of arrival of the audio signal. In its current version, these coefficients were estimated based on binaural summation gains and not on subjective directional loudness. Also, the algorithm lacks directional weights for wider elevation angles (jfj � 30�). A listening test with broadband stimuli was conducted to collect subjective data on directional effects. The results were used to calculate a new set of directional weights. A modified version of the loudness algorithm with these estimated weights was tested against its benchmark using the collected data, and using program material rendered to reproduction systems with different loudspeaker configurations. The modified algorithm performed better than the benchmark, particularly with reproduction systems with more loudspeakers positioned out of the horizontal plane.

Item Type: Article
Divisions : Faculty of Arts and Social Sciences > Department of Music and Media
Authors :
NameEmailORCID
Pires, Leandro
Vieira, Maurilio
Yehia, Hani
Brookes, TimT.Brookes@surrey.ac.uk
Mason, RussellR.Mason@surrey.ac.uk
Date : 8 June 2020
Depositing User : James Marshall
Date Deposited : 12 Jun 2020 12:58
Last Modified : 12 Jun 2020 13:03
URI: http://epubs.surrey.ac.uk/id/eprint/857791

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