VEHICULAR APPARATUS
First Claim
1. A vehicular apparatus having a hands-free conversation function for coupling with a communication terminal, which is connectible to a public line network, the vehicular apparatus comprising:
- a communication, device for communicating with the communication terminal;
a speech sound output device for outputting a received speech sound, which is received from the communication terminal via the communication device;
a speech sound input device having a first microphone and a second microphone, for inputting a transmission speech sound that is to be transmitted to the communication terminal;
a vehicle information acquisition device for acquiring vehicle information that relates to a vehicle, on which the speech sound input device is mounted;
a first speech sound extraction device for setting a first orientational direction, which provides a directionality of the speech sound input device, according to the vehicle information acquired by the vehicle information acquisition device, and for extracting a first speech sound that is input from the first orientational direction;
a speech sound recognition device for signal-processing the transmission speech sound input via the speech sound input device so as to recognize the transmission speech sound;
a second speech sound extraction device for signal-processing the transmission speech sound input via the speech sound input device, for specifying a second orientational direction, which provides an input direction of the transmission speech sound recognized by the speech sound recognition device, based on a signal processing result with changing the directionality of the speech sound input device, and for extracting a second speech sound that is input from the second orientational direction;
a sound quality comparison unit for comparing a sound quality of the first speech sound with a sound quality of the second speech sound;
a changeover device for selecting one of the first speech sound and the second speech sound, which is higher in sound quality, according to a comparison result provided by the sound quality comparison unit, and for performing a changeover between the first speech sound and the second speech sound to select the one of the first speech sound and the second speech sound as the transmission speed sound; and
a control device for allowing the changeover device to perform the changeover between the first speech sound and the second speech sound when a predetermined determination condition is fulfilled.
1 Assignment
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Accused Products
Abstract
A hands-free conversation vehicular apparatus coupling with a communication terminal includes: a communication device; a sound output device; a sound input device inputting a transmission speech sound; a vehicle information acquisition device; a first sound extraction device setting a first direction for a directionality of the sound input device, and extracting a first sound along the first direction; a sound recognition device; a second sound extraction device specifying a second direction for the transmission speech sound recognized by the sound recognition device, and extracting a second sound along the second direction; a sound quality comparison unit comparing a sound quality of the first and second sounds; a changeover device for selecting one of the first and second sounds as the transmission speed sound; and a control device for allowing the changeover device to perform a changeover when a determination condition is fulfilled.
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Citations
13 Claims
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1. A vehicular apparatus having a hands-free conversation function for coupling with a communication terminal, which is connectible to a public line network, the vehicular apparatus comprising:
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a communication, device for communicating with the communication terminal; a speech sound output device for outputting a received speech sound, which is received from the communication terminal via the communication device; a speech sound input device having a first microphone and a second microphone, for inputting a transmission speech sound that is to be transmitted to the communication terminal; a vehicle information acquisition device for acquiring vehicle information that relates to a vehicle, on which the speech sound input device is mounted; a first speech sound extraction device for setting a first orientational direction, which provides a directionality of the speech sound input device, according to the vehicle information acquired by the vehicle information acquisition device, and for extracting a first speech sound that is input from the first orientational direction; a speech sound recognition device for signal-processing the transmission speech sound input via the speech sound input device so as to recognize the transmission speech sound; a second speech sound extraction device for signal-processing the transmission speech sound input via the speech sound input device, for specifying a second orientational direction, which provides an input direction of the transmission speech sound recognized by the speech sound recognition device, based on a signal processing result with changing the directionality of the speech sound input device, and for extracting a second speech sound that is input from the second orientational direction; a sound quality comparison unit for comparing a sound quality of the first speech sound with a sound quality of the second speech sound; a changeover device for selecting one of the first speech sound and the second speech sound, which is higher in sound quality, according to a comparison result provided by the sound quality comparison unit, and for performing a changeover between the first speech sound and the second speech sound to select the one of the first speech sound and the second speech sound as the transmission speed sound; and a control device for allowing the changeover device to perform the changeover between the first speech sound and the second speech sound when a predetermined determination condition is fulfilled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification