Voice recognition apparatus for vehicle
First Claim
1. A voice recognition apparatus for a vehicle that recognizes a voice input from a user via a voice input device, comprising:
- a response output device for outputting a response to said voice input;
a recognition possible/impossible determining device for determining whether said voice input can be recognized;
a response change executing device that is operable, when recognition is determined to be impossible, to output a response having a different expression from said response output device depending on a number of times it has been determined that recognition would be impossible by said recognition possible/impossible determining device;
a voice recognition device for carrying out recognition of said input voice through said voice input device depending on a predetermined recognition threshold value, said predetermined recognition threshold value being used by said voice recognition device during recognition of said input voice to select a candidate corresponding to said input voice; and
,a recognition threshold value updating device for updating, when the recognition is determined to be impossible by said recognition possible/impossible determining device, said recognition threshold value to be referred to by said voice recognition device to a lower threshold value, by subtracting a predetermined value, and thereby increasing a possibility of determining the corresponding candidate upon subsequent receipt of the voice input to said voice recognition device.
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Accused Products
Abstract
A speech recognition apparatus for a vehicle is provided for decreasing the feeling of discomfort of the operator even in the case that speech recognition is continuously impossible over several times. The speech recognition apparatus for a vehicle that recognizes voice input via an voice input device comprises a response output device for outputting a response to said voice input, a recognition possible or impossible determining device for determining whether said voice input can be recognized, and a response change executing device for operating when recognition is impossible for outputting a response having a different expression from said response output device depending on the number of times it has been determined that recognition is impossible by said recognition possible or impossible determining device.
21 Citations
15 Claims
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1. A voice recognition apparatus for a vehicle that recognizes a voice input from a user via a voice input device, comprising:
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a response output device for outputting a response to said voice input; a recognition possible/impossible determining device for determining whether said voice input can be recognized; a response change executing device that is operable, when recognition is determined to be impossible, to output a response having a different expression from said response output device depending on a number of times it has been determined that recognition would be impossible by said recognition possible/impossible determining device; a voice recognition device for carrying out recognition of said input voice through said voice input device depending on a predetermined recognition threshold value, said predetermined recognition threshold value being used by said voice recognition device during recognition of said input voice to select a candidate corresponding to said input voice; and
,a recognition threshold value updating device for updating, when the recognition is determined to be impossible by said recognition possible/impossible determining device, said recognition threshold value to be referred to by said voice recognition device to a lower threshold value, by subtracting a predetermined value, and thereby increasing a possibility of determining the corresponding candidate upon subsequent receipt of the voice input to said voice recognition device. - View Dependent Claims (2)
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3. A voice recognition apparatus for a vehicle that recognizes voice input from a user via a voice input device comprising:
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a response output device for outputting a response to said voice input; a recognition possible/impossible determining device for determining whether said voice input can be recognized; a factor detecting device for detecting a factor in the determination of recognition impossibility based on a state of the said voice input device or a state of the vehicle, when recognition is determined to be impossible by said recognition possible/impossible determining device; and a response change executing device that is operable, when recognition is determined to be impossible, to output a response having a different expression from said response output device depending on said factor detected by said factor detecting device. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A voice recognition apparatus for a vehicle that recognizes voice input from a user via a voice input device comprising:
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a response output device for outputting a response to said voice input; a recognition possible/impossible determining device for determining whether said voice input can be recognized; a response change executing device that is operable, when recognition is impossible, to output a response having a different expression from said response output device depending on a number of times said recognition possible/impossible determining device has determined that recognition is impossible, and wherein said response change executing device also provides expressions to the user of possible environmental conditions inside and around the vehicle causing said recognition possible/impossible determining device to determine that recognition of said voice input device is impossible. - View Dependent Claims (15)
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Specification