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Localization Uncertainty in Time-Amplitude Stereophonic Reproduction

De Sena, Enzo, Cvetkovic, Zoran, Hacıhabiboglu, Huseyin, Moonen, Marc and van Waterschoot, Toon (2020) Localization Uncertainty in Time-Amplitude Stereophonic Reproduction IEEE/ACM Transactions on Audio, Speech, and Language Processing.

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This paper studies the effects of inter-channel time and level differences in stereophonic reproduction on perceived localization uncertainty, which is defined as how difficult it is for a listener to tell where a sound source is located. Towards this end, a computational model of localization uncertainty is proposed first. The model calculates inter-aural time and level difference cues, and compares them to those associated to freefield point-like sources. The comparison is carried out using a particular distance functional that replicates the increased uncertainty observed experimentally with inconsistent inter-aural time and level difference cues. The model is validated by formal listening tests, achieving a Pearson correlation of 0:99. The model is then used to predict localization uncertainty for stereophonic setups and a listener in central and off-central positions. Results show that amplitude methods achieve a slightly lower localization uncertainty for a listener positioned exactly in the center of the sweet spot. As soon as the listener moves away from that position, the situation reverses, with time-amplitude methods achieving a lower localization uncertainty.

Item Type: Article
Divisions : Faculty of Arts and Social Sciences > Department of Music and Media
Authors :
De Sena,
Cvetkovic, Zoran
Hacıhabiboglu, Huseyin
Moonen, Marc
van Waterschoot, Toon
Date : 12 February 2020
Uncontrolled Keywords : Stereophony, panning, recording and reproduction, localization uncertainty, auditory modelling.
Depositing User : James Marshall
Date Deposited : 18 Feb 2020 16:28
Last Modified : 18 Feb 2020 16:28

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