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Convention Paper

2-D to 3-D Upmixing Based on Perceptual Band Allocation (PBA)

Authors: Lee, Hyunkook

AES Convention 136 · Paper 9079 · April 2014

Abstract

Listening tests were carried out to evaluate the performance of a 2-D to 3-D ambience upmixing technique based on “Perceptual Band Allocation (PBA),” which is a novel vertical image extension method. Five-channel recordings were made with a 3-channel frontal microphone array and a 4-channel ambience array in a concert hall. The 4-channel ambience signals were low- and high-pass filtered at three different crossover frequencies: 0.5 k, 1 k, and 4 kHz. For 2-D to 3-D upmixing, the low-passed signals were routed to the corresponding lower-layer loudspeakers while the high-passed ones to the upper-layer loudspeakers configured in a 9-channel Auro3D-inspired setup. Results suggested that the proposed method produced a similar or greater magnitude of perceived 3-D listener envelopment compared to an original 9-channel ambience recording as well as the original 5-channel recording, depending on the crossover frequency.

Details

Published in
AES Convention 136
AES Convention
136
Paper number
9079
Publication date
April 6, 2014
Session subject
Spatial Audio
Affiliation
University of Huddersfield, Huddersfield, UK (See document for exact affiliation information.)
Type
Convention Paper