An audio apparatus includes a converter having a sound-output mode in
which the converter functions as a sound-output device for converting a
sound signal into an audio output and a sound-pickup mode in which the
converter functions as a sound-pickup device for converting an audio
signal into a sound output, a controller switching the converter to the
sound-output mode or the sound-pickup mode, an analyzing section
analyzing the sound output generated from the converter that is switched
to the sound-pickup mode by the controller, and an alarm section
generating an alarm signal based on an analysis result from the analyzing
section.