| 摘要 |
PURPOSE:To make the directivity of the microphone device in desired directions by providing a level controlling operator which makes the output level of the microphones variable. CONSTITUTION:When an operator 30 is slided, the level of a second microphone 13 changes along with the change in the resistance value of a variable resistor R and it is assumed, for example, that its directivity pattern has scaled down. Then, the synthesizing directional direction of the first microphone 11 and second microphone 13 subsequently narrows. At the same time, when the operator 30 is slided in the direction shown by the arrow (a), a moving member 27 also moves in the same direction and indicating members 21, 22 turn and narrow in the same direction in correspondence to the synthesizing directional direction, thereby indicating synthesizing directional direction. |
