| 摘要 |
<p>Process control method voice-operated by means of isolated vocal messages previously stored by speaking persons empowered to control these processes, and one of the corresponding forms of the voice- operated control apparatus. The apparatus (1) for voice-operated control of an appliance (2) ensures, by means of an analog/digital encoder (13), the PCM encoding of the vocal signals received by a microphone (11). A microprocessor (15) ensures the searching for the vocal signals likely to correspond to a vocal control message and the code-converting of the PCM sampled signals into extrema words; it counts up, in the form of histograms compiled successively for a succession of time windows taken throughout a sequence of received signals, the time lapses between extrema for each window, and deduces therefrom a reference shape for this sequence. The commands relating to the stored vocal messages are selectively triggered on recognition of a reference shape corresponding to a stored reference shape. <IMAGE></p> |
