Mandarin speech input method for Chinese computers and a mandarin speech recognition machine
US5220639A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1989 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Dec 1, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/15
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of inputting Chinese characters into a computer directly from Mandarin speech which recognizes a series of monosyllables by separately recognizing syllables and Mandarin tones and assembling the recognized parts to recognize the mono-syllable using Hidden Markov Models. The recognized mono-syllable is used by a Markov Chinese Language Model in a Linguistic decoder section to determine the corresponding Chinese character A Mandarin dictation machine which uses the above method, using a speech input device to receive the Mandarin speech and digitizing it so a personal computer can further process that information. A pitch frequency detector, a Voice signal pre-processing unit, a Hidden Markov Model processor, and a training facility are all attached to the personal computer to perform their associated functions of the method above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.