Contribution
High-resolution voice directivity: comparison of an artificial head and a human talker through two measurement systems
* Presenting author
Abstract:
Human voice directivity can be measured in sequential measurements that require the sound source to be repeatable, or in single-shot measurements that require a large number of microphones. Both systems are compared with an artificial head as a sound source. The sequential measurements are conducted with a fixed class-A measurement microphone with flat frequency response while the sound source is attached to a 3D arm that enables two rotation axis. The angular resolution is 5° in the azimuthal plane. The single-shot measurements are carried out by means of a circular microphone array composed of 180 MEMS microphones regularly spaced on an horizontal circle of 3 m diameter surrounding the talker. The angular resolution is hence 2° in the azimuthal plane. In addition, measurements of a human talker by the single-shot system are compared to the artificial head. Results are presented in polar diagrams for directivity patterns in the horizontal plane as well as directivity index in octave bands.