发明名称 |
Distinguishing out-of-vocabulary speech from in-vocabulary speech |
摘要 |
A speech recognition method includes receiving input speech from a user, processing the input speech using a first grammar to obtain parameter values of a first N-best list of vocabulary, comparing a parameter value of a top result of the first N-best list to a threshold value, and if the compared parameter value is below the threshold value, then additionally processing the input speech using a second grammar to obtain parameter values of a second N-best list of vocabulary. Other preferred steps include: determining the input speech to be in-vocabulary if any of the results of the first N-best list is also present within the second N-best list, but out-of-vocabulary if none of the results of the first N-best list is within the second N-best list; and providing audible feedback to the user if the input speech is determined to be out-of-vocabulary. |
申请公布号 |
US8688451(B2) |
申请公布日期 |
2014.04.01 |
申请号 |
US20060382789 |
申请日期 |
2006.05.11 |
申请人 |
GROST TIMOTHY J.;CHENGALVARAYAN RATHINAVELU;GENERAL MOTORS LLC |
发明人 |
GROST TIMOTHY J.;CHENGALVARAYAN RATHINAVELU |
分类号 |
G10L15/00;G10L15/18;G10L21/00;H04M1/64 |
主分类号 |
G10L15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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