| 摘要 |
<p>A method for comparing different electronic representations of sounds in an effort to determine a high level of confidence that the sounds, in fact, originated from the same source, is disclosed. Specifically, the method attempts to determine if two sounds were produced by the same human voice in an attempt to discriminate between allowed and non-allowed personnel seeking entry to a secure facility. A short word or phrase is converted into an electronic representation and is then compared with a data bank of stored similar representation of the same word or phrase made by the same person at some earlier time. Depending upon the comparison results, access is granted or denied. Sound prints comprising two portions; a time domain portion and a frequency domain portion are created and stored. The manner in which the sound prints are created, the manner in which the sound prints, once created, are compared and the admittance protocol are all the subject of the claims of this disclosure.</p> |
