| 摘要 |
The simplified, speaker independent, selected vocabulary, word recognising microcomputer functions without the use of a typical front end filtering network. The microcomputer identifies vowel-like fricative-like, and silence signal states within a word or phrase by counting speech pattern zero crossings during sequential time periods. Variable zero crossing count thresholds are used to identity states based upon previously identified states. Histeresis is provided, through the use of state time measurement to prevent the state oscillations which would result in erroneous state sequences. |
