Patent ID: 6522754
Filing Date: 2003-02-18
Classification: H04R

Abstract:
A vehicle public address system to be used on a bus, the system comprising:a speaker broadcast system for broadcasting announcements, the broadcast system having at least one internal speaker for broadcasting an upcoming bus stop announcement and at least one external speaker for broadcasting a bus route information announcement; a hands-free microphone apparatus for digitally pre-recording at least two separate announcements, the apparatus having a microphone, a hand actuated record switch for recording the bus route information announcement, a foot actuated record switch for recording the upcoming bus stop announcement, a mute switch for disabling at least one of the broadcasts of the announcements, a radio mode switch for radio communication and a record indicator; a digital means for storing the at least two announcements and a delayed playback circuit for delayed playback of the at least two announcements through the speaker broadcast system; an open door trigger relay which initiates the playback of the bus route information announcement through the at least one external speaker upon opening of the bus door; a fan blower relay for temporarily disengaging the bus fan blower during the pre-recording of the upcoming bus stop announcement; and a two-way radio for receiving and transmitting radio messages.