Patent ID: 6545595
Filing Date: 2003-04-08
Classification: G08B

Abstract:
A wireless door chime system comprising:a door chime receiver that is operative to receive an indication that a doorbell button has been actuated; a song detector having a communication path with the door chime receiver and that is operative to provide a command signal to cause the door chime system to play a high quality musical sound after notification by the door chime receiver that the doorbell button has been actuated; a sound memory that receives the command from the song detector and that upon receipt of the command outputs a previously stored musical signal that represents a high quality musical sound, the stored musical signal having been generated from a first musical sound that was digitized, filtered through the application of a digital low-pass filter, filtered through the application of a rank order filter, and converted to a second musical sound before being stored in the sound memory; and sound producing means for converting the stored musical signal from the sound memory into an audible sound.