VOICE RECOGNITION DEVICE AND NAVIGATION DEVICE
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Abstract
A voice recognition device 100 includes: a vehicle state detecting unit 7 for detecting a vehicle state of a vehicle having the voice recognition device mounted thereon; an acoustic data matching unit 5 for matching an acoustic feature value converted by a sound analyzing unit 3 with a recognition dictionary stored in a recognition dictionary storage unit 4 to recognize a voice input to a microphone 1; a recognition parameter setting unit 10 for setting a recognition parameter at the time when the voice input to the microphone 1 is recognized; and a control unit 9 for instructing the recognition parameter setting unit 10 to change the recognition parameter when the vehicle state detected by the vehicle state detecting unit 7 satisfies a predetermined condition.
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Citations
37 Claims
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1-17. -17. (canceled)
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18. A voice recognition device comprising:
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a sound collecting unit for acquiring an input voice; a voice processing unit for processing the voice acquired by the sound collecting unit into a digital signal; a sound analyzing unit for sound-analyzing the voice signal processed by the voice processing unit to convert an acoustic feature into an acoustic feature value indicated in time series; a recognition dictionary describing a correspondence between the acoustic feature value converted by the sound analyzing unit and recognition vocabulary; and an acoustic matching unit for matching the acoustic feature value with the recognition dictionary to recognize the voice that is input to the sound collecting unit, the device further comprising; a vehicle state detecting unit for detecting a vehicle state of a vehicle having the voice recognition device mounted thereon; an audio output detecting unit for detecting a volume of a voice signal that is output from an audio device installed within the vehicle; a gain setting unit for setting a voice acquisition gain of the sound collecting unit; a recognition parameter setting unit for setting a recognition parameter at the time when the acoustic matching unit recognizes the voice input to the sound collecting unit; and a control unit for instructing the recognition parameter setting unit to change the recognition parameter when the vehicle state detected by the vehicle state detecting unit and the volume of the voice signal detected by the audio output detecting unit satisfies a predetermined condition. - View Dependent Claims (20, 22, 23, 24, 25, 26)
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19. A voice recognition device comprising:
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a sound collecting unit for acquiring an input voice; a voice processing unit for processing the voice acquired by the sound collecting unit into a digital signal; a sound analyzing unit for sound-analyzing the voice signal processed by the voice processing unit to convert an acoustic feature into an acoustic feature value indicated in time series; a recognition dictionary describing a correspondence between the acoustic feature value converted by the sound analyzing unit and recognition vocabulary; and an acoustic matching unit for matching the acoustic feature value with the recognition dictionary to recognize the voice that is input to the sound collecting unit, the device further comprising; a vehicle state detecting unit for detecting a vehicle state of a vehicle having the voice recognition device mounted thereon; an audio output detecting unit for detecting a volume of a voice signal that is output from an audio device installed within the vehicle; a gain setting unit for setting a voice acquisition gain of the sound collecting unit; a recognition parameter setting unit for setting a recognition parameter at the time when the acoustic matching unit recognizes the voice input to the sound collecting unit; a voice recognition stop processing unit for stopping the voice recognition processing of at least one of the voice processing unit, the sound analyzing unit, and the acoustic matching unit when the stop of the voice recognition processing is instructed; and a control unit for instructing the recognition parameter setting unit to change the recognition parameter or instructing the voice recognition stop processing unit to stop the voice recognition processing when the vehicle state detected by the vehicle state detecting unit and the volume of the voice signal detected by the audio output detecting unit satisfy a predetermined condition. - View Dependent Claims (21, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification