Who invented karaoke?

The "Three Great Inventions" of post-war Japan were the bouncing ball (called Kashiwa Takacho in Japanese)\Electric Rice Cooker\Karaoke (backing track or karaoke). These three items had a major impact on Japanese culture and life. Karaoke is actually an audio device. Kara is the Japanese word for empty (KAYA) and OK is the first two letters of the foreign word for band (OKESUTOYA), which together mean "no one's band". (also known as an automated back-up singer). This audio equipment was invented by the Japanese and first appeared in Japan in some snack bars, bars and other public **** entertainment venues. In addition to customers enjoying pre-recorded music, anyone can sing to the accompaniment of pre-recorded music and participate in the impromptu singing. A synthesized program with both pre-recorded music and the voice of the person present is played back on the spot through the synthesis of the reverberation system in the machine. One person singing. It's like a bowl of water - tasteless. Even the best singing voice is not good enough. However, with this kind of karaoke accompaniment, singing, the rhythm of a strong, sudden increase in interest, sound decoration has changed, the singer's sense of commitment and sense of success doubled, so doubly favored by music lovers. After the reform and opening up, from Hong Kong to Shenzhen and Guangdong Province after the spread of the country.