| 摘要 |
An audio-visual device adapted for instance for teaching foreign languages is provided with a substrate on which is disposed alternating rows of written matter and sound recorded tracks, adjacent rows being logically related to one another, for example, a recorded track may contain a translation of the adjacent written matter. Several embodiments are shown including one in which a sound track reading head disposed in a reading arm is driven along a sound track wherein the reading arm is removed from above one line when it has been read and put into position above the next line. In another embodiment, the substrate is formed as sheets in a loose-leaf binder which are turned after a side has been read and listened to. In a final embodiment, means are provided for automatically displacing the reading arm and the magnetic tape reading head between adjacent lines as well as a drive for returning the magnetic tape reading head to its starting position at a high speed.
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