Abstract
The voice made in vocal chords as a single sound source spreads radially when we speak. In addition, it is thought that the head itself plays the role of the special loudspeaker when the voice is emitted from the surface of it. Authors developed before the loudspeaker for robots with twelve dynamic loudspeakers embedded on each face of regular dodecahedron. The microphone unit to measure those performances was also developed. In this study, the performance tests of the microphone unit were done in the anechoic box.
