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Localization Uncertainty in Time-Amplitude Stereophonic Reproduction
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Date
2020-01-01
Author
De Sena, Enzo
Cvetkovic, Zoran
Hacıhabiboğlu, Hüseyin
Moonen, Marc
van Waterschoot, Toon
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This article 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 free-field 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.
Subject Keywords
Speech and Hearing
,
Media Technology
,
Linguistics and Language
,
Signal Processing
,
Acoustics and Ultrasonics
,
Instrumentation
,
Electrical and Electronic Engineering
URI
https://hdl.handle.net/11511/57922
Journal
IEEE-ACM TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING
DOI
https://doi.org/10.1109/taslp.2020.2975419
Collections
Graduate School of Informatics, Article
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BibTeX
E. De Sena, Z. Cvetkovic, H. Hacıhabiboğlu, M. Moonen, and T. van Waterschoot, “Localization Uncertainty in Time-Amplitude Stereophonic Reproduction,”
IEEE-ACM TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING
, pp. 1000–1015, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57922.