| 摘要 |
PROBLEM TO BE SOLVED: To provide an acoustic device the device scale of which for a predetermined directivity performance is smaller than that of prior art, more specifically, to provide an acoustic device of higher directivity performance if the device scale is the same as that of an acoustic device of prior art, and to provide an acoustic device of smaller device scale if the directivity performance is the same as that of an acoustic device of prior art.SOLUTION: A sound pick-up device includes at least one first microphone arranged so that the transfer characteristics from a control point at the outside of the sound pick-up device are not likely to be modulated, and at least one second microphone arranged so that the transfer characteristics from the control point are likely to be modulated. |
