GUIDING DEVICE AND METHOD OF CONTROLLING THE SAME
First Claim
Patent Images
1. A guiding device controlling the directivity of a sound that is reproduced from a speaker in accordance with an attribute of contents.
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Abstract
A guiding device controls the directivity of a sound that is reproduced from a speaker in accordance with an attribute of contents.
13 Citations
6 Claims
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1. A guiding device controlling the directivity of a sound that is reproduced from a speaker in accordance with an attribute of contents.
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2. A guiding device comprising:
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a carrier wave generating unit that generates and outputs an ultrasonic carrier wave; a modulating unit that modulates the ultrasonic carrier wave output from the carrier wave generating unit with an input audible voice signal; a switching unit that selects and outputs the modulated signal output from the modulating unit or the input voice signal; an ultrasonic transducer that is capable of being operated in both a first operation mode that reproduces a sound having a directivity and a second operation mode that reproduces a sound having no directivity, and is driven by a signal output from the switching unit to reproduce a signal sound; and an attribute discriminating unit that receives voice guidance information including attribute data and voice data, outputs the voice data to the modulating unit and the switching unit as a voice signal, discriminates the attribute of the voice guidance information, and controls the switching unit so as to select the first operation mode or the second operation mode in accordance with the attribute. - View Dependent Claims (3)
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4. A guiding device comprising:
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a carrier wave generating unit that generates and outputs an ultrasonic carrier wave; a modulating unit that modulates the ultrasonic carrier wave output from the carrier wave generating unit with an input audible voice signal; a level adjusting unit that adjusts a level ratio of the modulated signal output from the modulating unit and the voice signal; an attribute discriminating unit that receives voice guidance information that is contents including attribute data and voice data, outputs the voice data to the modulating unit and the level adjusting unit as a voice signal, discriminates the attribute of the voice guidance information, and generates a level ratio command so as to change the level ratio of the modulated signal and the voice signal in accordance with the attribute information, and outputs the level ratio command to the level adjusting unit; a mixer that composes the modulated signal and the voice signal whose levels are adjusted by the level adjusting unit, and outputs a composite wave; and an ultrasonic transducer that is capable of reproducing both a sound having a directivity and a sound having no directivity, and is driven by a signal output from the mixer to reproduce a signal sound. - View Dependent Claims (5, 6)
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Specification