It is a type of interactive entertainment which offered in many bars and clubs in which people sing and also record music with microphone is called as karaoke. The sound system karaoke is a musical instrumental version as the lyrics are displayed on the monitor or the video screen and with moving symbols and different display colors or different music video images which will guide the singer to sing.
The basic machine used to have music player, microphone input with altering of the pitch of the music and an audio output. Some machines have done some changes in which vocal suppression is also done in which the original singer voice will removed and only the music will running sometimes it not effective but one could try their singing skills . The most of the karaoke machines will change the pitch electronically so amateur singers can adjust the pitch as per the requirement while maintaining the originality of the song.
Most popular games also use karaoke which will help the participants to sing when they are playing around. Many low end systems have karaoke mode that will try to remove the voice form the regular track incorporate the voice in the track. The process in knowns as central channel extraction procedure and most of the recording center follow this type of vocal recordings. The voice will be incorporated within equal volume on both the channels with no phase difference. Some common effects in this process are there will be reverberation in the voice track also some times in the track.
This is one process for armature to test his or her signing skills and one can adjust the vocal level up and down by the operational activity in the karaoke machine and make the singer sing in their own way and enjoy.