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A Pilot Study on Tone-Dependent Directivity Patterns of Musical Instruments

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Musical instruments are complex sources that radiate sound with directivity patterns that are not only frequency dependent, but can also change as a function of the tone played. Using a publicly available musical instrument directivity database, this paper analyzes the tone-specific directivity patterns of three instruments and compares them to their averaged directivities. A further listening test is conducted to determine whether differences between auralizations using averaged directivities and tone-specific directivities are audible under anechoic conditions. The results show that the differences are audible for woodwind and string instruments, and less noticeable for brass instruments.

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