Perceptual evaluation of differences between original and synthesised musical instrument sounds

Regular paper

Alejandro Osses

Eindhoven University of Technology

Wednesday 3 june, 2015, 15:40 - 16:00

0.2 Berlin (90)

To better understand the properties of musical instruments, their recordings in controlled situations (original sounds) are often compared with computational models (synthesised sounds) that recreate such situations. When they are compared, objective descriptors are often used rather than perceptual audio (psychoacoustic) descriptors. The purpose of this study was to apply psychoacoustic descriptors to measured and modelled signals of a musical instrument and to identify whether there were perceptual differences in the signals. The hummer was chosen, which is a musical instrument that generates sound when it is rotated at certain speeds, due to airflow exciting the resonance frequencies of the system. Perceptual differences were found for loudness fluctuations and roughness. The evaluation criteria are presented as well as a discussion of the applicability of these methods to the evaluation of other musical instruments.

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