4-channel multi-system for separate broadcasting of voice and music

摘要

The present invention relates to a 4-channel multiplexing technique for separately transmitting and receiving voice and music that can be adjusted to suit the audiences' audiovisual systems of TV or radio broadcasts. The present invention can also be used as a sound system of a video system including audio and video tapes such as a sound recorder and a CD player.;When the present invention is applied to a broadcasting system, a broadcasting station transmits voice and music separately in a voice multiplexing circuit without mixing music and voice, as in a mixing console, The four channel multiplexing circuit of the present invention is used to modulate only two channels of music into two channels, that is, audio and music separated into left and right stereo, and the receiving side can view the desired volume using the third degree . In order to implement the 4-channel multiplexing circuit, a 2-channel stereo circuit and a quaternary multiplexing circuit are used. The present invention is advantageous in that a person who wants to learn a new song or a person who is not confident in singing can use the karaoke machine, the audio machine, and the video system as it is,