We present a new method for adding a voice track to either educational or training computer programs. The voice track is prerecorded and played back on a standard cassette recorder. A problem with tape recorders has, in the past, been a lack of synchronization between the computer-generated screen and the tape recorder output. We have developed a low cost controller which interfaces the tape recorder and also provides the required synchronization. We explain how the controller is used within a computer program and describe the controller's components. This new method of providing a voice track offers several advantages over methods involving voice synthesizers.
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