Patent ID: 8135149
Filing Date: 2012-03-13
Classification: H04R

Abstract:
1. A wireless communication device, comprising: a speaker that produces sound; a speaker grille provided in front of the speaker; an output amplifier connected to the speaker; a source voltage switching unit that switches a level of voltage applied to the output amplifier; a signal switching unit that switches an output of the output amplifier to an audio signal or a water discharge signal; and a control unit that activates a water discharge assisting function, wherein when the water discharge assisting function is activated, the control unit is configured to control the source voltage switching unit to apply a first voltage to the output amplifier, the first voltage being higher than a second voltage applied to the output amplifier while the audio signal is being produced, and to control the signal switching unit to continuously apply the water discharge signal to the output amplifier so that the speaker produces a higher sound pressure than while the audio signal is being produced, thereby discharging water in the speaker grille.