Correlation Between Subjective and Objective Data for Quality Loudspeakers
The aim of the research reported here was to disclose, if possible, connections between a subjective evaluation of quality loudspeakers and their objectively measured data. The research covered listening tests and objective measurements of a series of quality loudspeakers. In the listening tests the method of paired comparisons was used and the loudspeakers were evaluated with regard to 35 subjective qualities. The result of a statistical analysis showed the loudspeakers' subjective data in the form of rank order of preference, one for each of the 35 qualities. The uncertainty of the subjective data was also determined. Tests were made as to whether the evaluations were dependent on the testees, the music examples used in the listening tests, or the sound level of the reproduction. A tentative dimensional analysis showed that the subjective data could be summed up in two psychological dimensions. By comparing these subjective data against the objective data, a correlation was observed between, on the one hand, the loudspeaker's frequency response measured in the listening room and the loudspeaker's power response as well as phase response and, on the other hand, the subjective evaluation with respect to the two psychological dimensions.
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