| 摘要 |
<p>PURPOSE: To enable generating of vocal sounds with a characteristic complicated tone, for example, a bleat given by a sheep by adjusting the amount of air to allow varying of the volume and quantity of sound. CONSTITUTION: Air intake ports 36 in an external plate 35 of a feed air chamber 34 are adjusted to be opened or closed by communication holes 37 and closure parts 38 of an adjusting plate 39 which is advanced or retracted with the rotation of a second crank shaft so that the intake of outside air is automatically adjusted with respect to the inside of the feed air chamber 34 while the amount of feed air to an exhaust path 43 from the gas feed chamber 42 is adjusted. In this process, a cock 47 is turned in inversion longitudinally through a working piece 58 and a rotary piece 49 with the rotation of a first crank shaft and the action of a communication hole 48 of the cock 47 automatically causes a gradual change in the amount of the air to be supplied to a vocal sound making body 51. With changes in the flow rate and the flow velocity, a slight pulsation is generated and moreover, in combination with a vibrating action of a vibration piece 56, this enables generating of a tone imitating a bleat of a sheep.</p> |
