| 摘要 |
PURPOSE:To obtain a preferred sound volume level by storing a sound level signal to a memory in a form of digitized information and using an operation section to select the stored content. CONSTITUTION:When a preset section 7 executes [sound volume up] or [sound volume down] operation to obtain a preferred sound volume level, a microcomputer 8 increases or decreases a counter 3 and the digitized information of the counter at this time is stored in a memory 1C. The operation section 9 has key matrix circuits of number of pieces of information stored therein, and the microcomputer 8 reads the stored content by selecting optionally the desired storage sound level signal and reading it, and the result is outputted to a D/A converter 4. Circuits after the D/A converter 4 and succeeding are the same as conventional examples. |
