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Objective and Subjective Tests of Consumer-Class Audio Devices

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The paper presents a new stand for subjective listening tests in Department of Mechanics and Vibroacoustics of Krakow University of Science and Technology, as well as a procedure and results of preliminary tests that utilise it. The most important difference, compared to the previously used stand, is exclusion of an analogue mixing console, which reduces the length of electroacoustic channel, and substituting active studio monitors with 12 pairs of closed headphones in order to provide a larger group of listeners with the same listening conditions. The tests study popular consumer audio reproduction devices, therein standalone and motherboard integrated sound cards, as well as portable players. The research included measurements and comparison of objective parameters, as well as ABX method listening test, with a studio-class audio interface as a reference device. A group of listeners of various professional profiles, including students of Academy of Music in Krakow and Acoustic Engineering of Krakow University of Science and Technology, took part in listening tests. Results are compared to the data obtained using the previous test stand.

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