Abstract
The analysis of available literature indicates that tests of products
sound quality, which would not involve participation of groups of
listeners supposed to evaluate the sounds emitted by these products, are
neither carried out in Poland, nor in the world. That results in the fact
that the products sound quality is determined on the basis of
psychoacoustic information and comprises both objective and subjective
factors of sound perception. With reference to those factors and to
different life cycles of the machine, an original definition of the “sound
quality of the machine” has been developed and presented in this article.
The global index of the acoustic quality of the machine, accounting for
the relations between the noise level at the workstation and the selected
parameters characterising both the machine's sound activity and the
working environment, was adopted as the measure of the sound quality of
the machine. The experiments that followed confirmed the appropriateness
of the assessment made with the use of the global index of acoustic
quality.
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