| 摘要 |
A sound pick-up and reproduction apparatus (Aac) which is rotatable about an axis (D) and includes a mounting (1), a sound pick-up device (2) and a sound reproduction device (3) with a convex or planar surface (revolving cone) opposite the sound pick-up device. Said sound reproduction device (3) fits within a revolving cone (B' C A') of which the axis coincides with the axis of symmetry (D), and is directly attached to the mounting (1). The apparatus is useful for conference calls. |
