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Perceived Sound Quality of Small Original and Optimized
Loudspeaker Systems.
Adrian Bahne
, Uppsala University
Journal of the Audio Engineering Society,
Vol 60, No. 1/2 Jan-Feb. 2012.
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Abstract:
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The perceived sound quality of small loudspeaker systems with and without digital optimization
was empirically evaluated in a listening experiment. Further, it was investigated how
the presentation order in the performed paired comparisons influenced the results, as well
as whether a self-evaluation was 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 listeners.
The test investigated whether linear pre-compensation
of small and inexpensive loudspeaker 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
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