Measurements of musical instruments with surrounding spherical arrays

Gottfried Behler , Martin Pollow , Michael Vorländer

The directivities of natural sound sources such as musical instruments are often neglected in auralization, both when working with measured or simulated acoustical environments. This is due to the complex nature of both the radiation of musical instruments and the post-processing involved in this task. However, as the directivity patterns constitute an audible part of the tonal characteristic of a musical instrument in a room, it is advisable to take their directivities into account. To conduct the measurements, a large surrounding spherical microphone array was constructed that allows to fully encompass the musician in an anechoic chamber. Hereby great care has to be taken in the design process of the recording device in order to obtain a broad-band omnidirectional sensitivity of the used microphones. The acquired multi-channel audio data can be then used to analyze the directivities of the recorded instrument

Mots clés: microphone-array; directivity; musical instrumen

Domaines: Acoustique [physics.class-ph]

Gottfried Behler, Martin Pollow, Michael Vorländer. Measurements of musical instruments with surrounding spherical arrays. Acoustics 2012, Apr 2012, Nantes, France. ⟨hal-00811213⟩