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Appl. Sci. 2017, 7(4), 374; doi:10.3390/app7040374

Objective Evaluation Techniques for Pairwise Panning-Based Stereo Upmix Algorithms for Spatial Audio

Department of Signal Processing and Communications, Helmut Schmidt University, Hamburg 22043, Germany
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Author to whom correspondence should be addressed.
Academic Editors: Woon-Seng Gan and Jung-Woo Choi
Received: 16 January 2017 / Revised: 24 March 2017 / Accepted: 31 March 2017 / Published: 10 April 2017
(This article belongs to the Special Issue Spatial Audio)
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Abstract

Techniques for generating multichannel audio from stereo audio signals are supposed to enhance and extend the listening experience of the listener. To assess the quality of such upmix algorithms, subjective evaluations have been carried out. In this paper, we propose an objective evaluation test for stereo-to-multichannel upmix algorithms. Based on defined objective criteria and special test signals, an objective comparative evaluation is enabled in order to obtain a quantifiable measure for the quality of stereo-to-multichannel upmix algorithms. Therefore, the basic functional principle of the evaluation test is demonstrated, and it is illustrated how possible results can be visualized. In addition, the proposed issues are introduced for the optimization of upmix algorithms and also for the clarification and illustration of the impacts and influences of different modes and parameters. View Full-Text
Keywords: objective evaluation; stereo upmix; spatial audio; quality measure objective evaluation; stereo upmix; spatial audio; quality measure
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Mieth, M.; Zölzer, U. Objective Evaluation Techniques for Pairwise Panning-Based Stereo Upmix Algorithms for Spatial Audio. Appl. Sci. 2017, 7, 374.

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