Correct Answer - Option 1 : Karaoke machine
Explanation-Karaoke is a type of interactive entertainment usually offered in clubs and bars, where people sing along to recorded music using a microphone. The music is an instrumental version of a well-known popular song. Lyrics are usually displayed on a video screen, along with a moving symbol, changing colour, or music video images, to guide the singer.
The karaoke-styled machine was developed in various places in Japan. Japanese engineer ShigeichiNegishi, who ran a car audio system assembly business in Tokyo, made the first prototype in 1967.A basic karaoke machine consists of a music player, microphone inputs, a means of altering the pitch of the played music, and an audio output. Most karaoke machines have technology[15] that electronically changes the pitch of the music so that amateur singers can choose a key that is appropriate for their vocal range, while maintaining the original tempo of the song. Most common machines are CD+G, Laser Disc, VCD or DVD players with microphone inputs and an audio mixer built in.
