Hand carried alerting sound generator device

摘要

A method and device for generating alerting sounds and broadcasting the same into the interior of a building so that an occupant can be made aware of the presence of a visitor at a door to the building. The sounds are generated by an exciter feature of a transducer held in a case, able to be gripped in one hand of a user, the exciter feature being able to be pressed against an exterior surface of the door by the user moving the case to a position adjacent to the door. The transducer vibrates its exciter feature in correspondence with audio signals transmitted to the transducer to broadcast corresponding sounds into the interior of the building by resonance induced in the door by the vibrating exciter feature. The sounds can resemble conventional alerting sounds such as a knocking or ringing sounds, and/or can be a spoken message either prerecorded in an audio source or created contemporaneously by being spoken by the user into a microphone. The device may be hand carried door to door as by delivery personnel and emergency workers and used to effectively alert occupants and eliminate the need for hand knocking or yelling a message through the door.

主权项

1. A hand held alerting sound generator device for broadcasting sounds into the interior of a building to signal to an occupant that a visitor is at a door of the building who is seeking to make contact with an occupant, comprising:
a casing of a size able to be gripped by one hand of a user; a transducer held by said casing, said transducer having an exciter feature able to be held in contact against an exterior surface of a member of said building by a user while gripping the casing; said exciter feature being vibrated in correspondence to audio signals from an audio signal source by operation of said transducer, whereby said exciter feature when held against said external surface of said building member, causes said building member to correspondingly resonate and thereby broadcast sounds corresponding to said audio signals into said interior of said building.