| 摘要 |
An improved tape echo reproducing machine is provided having a direct current motor, in place of an alternating current motor, which is coupled to a shaft or other rotating means operatively coupled to a length of recording tape. The direct current motor translates the tape through the machine with greater smoothness, less weight and less heat production, which can damage the tape and reduce the portability of the machine. Further improvements include a Automatic Noise Control, which operates to dampen background, ambient noise from being reproduced along with the inputted sound. |
