Patent ID: 6608907
Filing Date: 2003-08-19
Classification: H04R,H04S

Abstract:
An audio apparatus, comprising:an audio output unit for encoding an audio signal according to an IEEE 1394 protocol and for outputting the encoded audio signal; a subwoofer speaker unit connected to said audio output unit for receiving said encoded audio signal from said audio output unit, for decoding said encoded audio signal to produce a decoded signal, for modulating said decoded signal by means of a spread spectrum FM modulation method to produce a modulated signal, and for wirelessly transmitting said modulated signal; and a plurality of speaker units, each of said speaker units receiving the wirelessly transmitted modulated signal, amplifying the received wirelessly transmitted modulated signal to produce an amplified signal and outputting the amplified signal; wherein said subwoofer speaker unit comprises decoder means for receiving and decoding the encoded audio signal to produce first and second decoder outputs, converting and amplifying means for receiving, converting and amplifying the first decoder output to produce an audio output, and modulating and transmitting means for modulating the second decoder output and wirelessly transmitting the modulated second decoder output to the plurality of speaker units.