| 摘要 |
<p>Apparatus and method for recording and reproducing analog signals. When used in a voice response system, audio signals are sampled at approximately a 5 kHz rate, and the samples are recorded on the track of a magnetic disc or drum. The record medium makes a single rotation in less time than it takes to record or reproduce a word. Thus, the samples are recorded in an interlaced format on the record medium. By storing samples only, much less storage capacity is needed for each signal than in the case where the continuous signal is recorded. The interlacing technique allows fast random access to any signal and does not require the use of buffering circuits. The samples are recorded in the form of pulse widths to provide extremely dense packing of information.</p> |
