| 摘要 |
The present invention generally includes three principal components; namely, (1) a hand held transceiver for transmitting a voice pattern while moving (e.g., driving) past an (2) infra-red receiver array which receives the transmitted voice pattern, and a (3) speech enhancement and voice verification algorithm for conducting a comparison between the transmitted voice pattern and the registered voice patterns stored in the computer's memory. The hand held transceiver includes a conventional telephone handset in which a microphone subassembly, a transceiver circuit card, and LED indicators are housed. The transceiver element, also housed in the handset, includes a 16-bit analog to digital converter for converting the analog voice pattern to a corresponding digital signal, a microprocessor, a memory unit for storing the digitized voice sample for a predetermined period of time, and an IR transceiver for transmitting the digitized voice sample. Once a voice sample is digitized in the hand held transceiver, the individual may point the transceiver at a receiver array station which is housed in a cabinet, and after receiving a prompt from the receiver array, the voice signal, among other things, will be automatically, wirelessly transmitted. The processing computer will first recognize the spoken phrase, and then perform speaker verification using speech processing and comparing algorithms consisting of a speech recognizer and a vector quantification software classifier, ultimately sending a "pass" or "fail" signal to a control center computer based upon whether the speaker's voice pattern matches one of the voice samples stored in the computer's memory, respectively.
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