Patent ID: 7953232
Filing Date: 2011-05-31
Classification: H04R

Abstract:
1. A guiding device comprising: 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.