| 摘要 |
Methods and apparatus for the recording and playback of animation control signals, including voice, are disclosed. In accordance with the method, a dual track cassette recording is made, one track consisting of a voice channel and the other track consisting of a plurality of control signals for the control of animation, and in some instances for control of the speaker or speakers through which the voice channel will be played back, whereby two or more animated characters may appear to speak to each other or speak or sing in unison are disclosed. The control signals are pulse width modulated signals to provide, in general, proportional control signals to provide proportional control, through appropriate servo motors and the like, of the animated elements such as mouth, eyes, etc. of the animated character. The pulse width modulated signals, together with a sync signal, are recorded directly on a cassette tape without modulation on a carrier frequency, despite the varying unsymmetrical wave forms, thereby allowing the compaction of a substantial number of control signals within the frequency band of reasonably priced playback units.
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