Controllable horizontal turntable optimization for a head-related transfer function measurement system
DOI:
https://doi.org/10.33414/rtyc.42.12-26.2021Keywords:
HRTF measurement system, Controllable turntable, FEMAbstract
To computationally simulate spatially distributed sound sources and achieve three-dimensional sound, head transfer functions (HRTFs) are used as filters. To complete a dense sphere of points with these functions around a subject, it is necessary to position a sound source at different angles and capture the impulsive responses using ear microphones. Currently, we are developing a HRTF measurement system that has a vertical semicircular support arc for loudspeakers and a controllable horizontal turntable where the subject is located. We have a turntable originally designed for another purpose and that supports up to 400 N of weight. In this work, it is proposed to redesign and optimize it to allow the movement of a seated person, tolerating up to ~2200 N. Based on tests carried out on the current platform, unwanted physical situations were detected and solutions validated through theoretical models and numerical simulations of static behavior were proposed.
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Copyright (c) 2021 Martín Mendez, Fabián C. Tommasini, Sebastián P. Ferreyra, R. Martín Guido, Juan Cruz Bordón, Fermín Scaliti
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