First measurements of a project on voice directivity (vor Ort)

* Presenting author
Day / Time: 23.03.2022, 17:20-17:40
Room: 7-01.
Typ: Regulärer Vortrag
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Voice directivity has been investigated since the 1920’s by means of measurement equipment of increasing accuracy over the years. So far, various geometries of microphone arrays were developed to measure the sound directivity of musical instruments or the human voice. Since exact repeatability cannot be reached by humans, measurements in various directions around the sound source must be made at once. Hence a spherical distribution of microphones was mostly used in previous research, up to 32 points, i.e. a representation on a basis of spherical harmonics up to order 4. Recent developments in MEMS transducer technology made it possible to use such microphones for directivity measurements. The present study used 180 microphones distributed on a circular structure, yielding an angular resolution of 2°, i.e. a maximal SH order of 89 in the horizontal plane. The measurement setup is presented and the first results on the directivity of several phonemes, in both speaking and singing voice, are discussed. The upcoming steps of the project, including the construction of a spherical microphone array and an artificial talking head, are then exposed for further discussion.