As such he also included a rudimentary reverb operate to aid mask singers' deficiencies. For these reasons, he is commonly regarded as the inventor of the trendy company product for karaoke, Although he wasn't the first to make a device and didn't, like Negishi or Yamashita, file a patent.[fourteen] Audio https://xn--939au0g6rj1ue34n9rrf5c.online/