发明名称 |
AUTOMATED SPEECH RECOGNITION USING NORMALIZED IN-VEHICLE SPEECH |
摘要 |
A speech recognition method includes the steps of receiving speech in a vehicle, extracting acoustic data from the received speech, and applying a vehicle-specific inverse impulse response function to the extracted acoustic data to produce normalized acoustic data. The speech recognition method may also include one or more of the following steps: pre-processing the normalized acoustic data to extract acoustic feature vectors; decoding the normalized acoustic feature vectors using as input at least one of a plurality of global acoustic models built according to a plurality of Lombard levels of a Lombard speech corpus covering a plurality of vehicles; calculating the Lombard level of vehicle noise; and/or selecting the at least one of the plurality of global acoustic models that corresponds to the calculated Lombard level for application during the decoding step.
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申请公布号 |
US2008004875(A1) |
申请公布日期 |
2008.01.03 |
申请号 |
US20060427590 |
申请日期 |
2006.06.29 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
CHENGALVARAYAN RATHINAVELU;PENNOCK SCOTT M. |
分类号 |
G10L15/00 |
主分类号 |
G10L15/00 |
代理机构 |
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