Abstract
In listening tests, loudness still turns out to be the most relevant parameter for a subject’s assessment regarding interior car sound. In order to investigate further parameters in listening tests, the influence of loudness differences between the sound samples has to be avoided. Minimizing errors, this can be done by equalizing the loudness of presentation of each sample to the median of all samples in the set. It can be found that originally soft cars now yield lower rankings of preference than before. A possible reason might be the loudness of presentation, which is higher than in the real car. A presentation of sound samples, which now are equalized to the loudness originally appearing in those soft cars, could possibly lead to different rankings. Furthermore, global assessments of loudness-equalized interior car sounds were obtained using the method of paired comparisons as well as the method of magnitude estimation.
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