Patent ID: 7742832
Filing Date: 2010-06-22
Classification: H04H,H04R

Abstract:
1. A digital wireless audio playback apparatus for playing an accompaniment to a player piano, the player piano having a player piano controller providing a player piano controller audio output, and controlled by player piano instructions, the apparatus comprising: an audio controller, coupled to the player piano controller for receiving as an input signal the player piano controller audio output of accompanying audio previously synchronized to a player piano system comprising the player piano, and broadcasting an output RF digital audio signal; and one or more wireless digital devices for receiving the output RF digital audio signal to play the accompaniment, wherein the output RF digital audio signal received by the one or more wireless digital devices, and the player piano instructions used by the player piano controller remain synchronized between the player piano and the output from the one or more wireless digital devices with an overall latency of less than 7 milliseconds and an audio time alignment between the output of each of the one or more wireless digital devices of less than 100 microseconds.