Voice recognition system having word frequency and intermediate result display features
US5257314A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1990 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Dec 5, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/87
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A voice recognition system includes a microphone for converting a voice to an electrical voice signal including voice and non-voice sound portions. An acoustic processing unit detects power and spectrum of the electrical voice signal, and outputs power time-series data and spectrum time series data. A voice section detection unit uses the power time-series data to detect a start point and an end point of the voice sound portion, and outputs an end decision signal indicative of such end point. A word dictionary stores word labels ordered in accordance with frequency of use, as well as word numbers and word templates. A recognition unit receives the feature time-series data and calculates a degree of similarity between the voice and the word templates. A sorting unit sorts data calculated in the recognition unit in accordance with the degree of similarity. A selection unit selects one or more words having a higher degree of similarity from words sorted in the sorting unit, and outputs these words to a display unit. A word frequency dictionary stores word labels, word numbers, word templates, and frequency data attached to each word label. Finally, a word dictionary sorting unit coupl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.