| 摘要 |
PURPOSE:To make one underwater sound generator perform functions of plural under water sound generators by composing to generate any pattern signal as necessary. CONSTITUTION:A control symbol signal wave 1 is received by a receiver 2. Output of the receiver 2 is inputted to a discriminating circuit 4, after intensified by an intensifier 3. The discriminating circuit 4 determines the type of the control symbol signal, and sends the discriminated results to a pattern signal generating circuit 6. The pattern signal generating circuit 6 sends the specified frequency and specified time length pulse corresponding to the output of the discriminating circuit 4 to an output circuit 8, and generates sound through a transmitter 9 as an output signal wave 10. |
