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

Applied Sciences

Martin Mieth¹  Udo Zölzer¹ 

[1] Department of Signal Processing and Communications, Helmut Schmidt University, Hamburg 22043, Germany;

关键词: objective evaluation;    stereo upmix;    spatial audio;    quality measure;   

DOI  :  10.3390/app7040374

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown