SURROUND-SOUND SYSTEM

摘要

An audio system is described for producing a plurality of surround-sound channels in response to an audio input signal, comprising a first stand-alone amplifier system (103) adapted to receive a left and right channel signal from a source and to output signal levels of said left and right channel signals to drive left and right channel loudspeakers (101, 102); a second amplifier system (111) including a surround-sound decoder (212) to split said audio input signal into said left and a right channel signal and into at least three surround-sound channels and an amplifier section to increase the signal levels of said at least three-surround channels to drive surround-sound channel loudspeakers and maintaining signal levels of said left and right channel signals at input levels for said first amplifier stage. Both amplifier systems are minimally linked and preferable volume-controlled through the stereo system.