Perceived Sound Quality of Small Original and Optimized Loudspeaker Systems.

Adrian Bahne , Uppsala University

Third International Workshop on Perceptual Quality of Systems (PQS), Dresden, September 6-8, 2010.

Abstract:

The perceived sound quality of small loudspeaker systems with and without digital optimization was empirically evaluated in a listening experiment.

Further, the influence on the results of the presentation order of the two versions was investigated, as well as a self-evaluation of potential use for variance reduction. The systems were optimized by means of FIR filters.

The two versions of each loudspeaker system were rated in a paired comparison test for music stimuli. For the purpose of analysis a linear gaussian model was applied, resulting in an interval scale revealing interesting information about certainty and discrimination ability of the subjects. The test investigated whether linear pre-compensation of rather cheap systems results in a significant improvement of the perceived audio quality in a typical listening situation.

The results indicated a significant preference for the optimized version and a significant dependency on the presentation order was detected. The self-evaluation was found to be uncorrelated to the test results.

Related publications:

PhD Thesis by Adrian Bahne

Later Paper in IEEE SP 2013 on symmetric loudspeaker-room equalization utilizing a pairwise channel similarity criterion.

Paper in IEEE TASLP 2013 on compensation of loudspeaker-room responses in a robust MIMO control framework.

Source:

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