Roberto del Rosario

A man singing karaoke into a microphone
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Roberto del Rosario

Roberto del Rosario is the president of the Trebel Music Corporation and the inventor of the Karaoke Sing Along System in 1975. Roberto del Rosario has patented more than twenty inventions making him one of the most prolific Filipino inventor. Besides his famous Karaoke Sing Along System Roberto del Rosario has also invented:

  • Trebel Voice Color Code (VCC)
  • piano tuner's guide
  • piano keyboard stressing device
  • voice color tape

Noted Patents

  • Patent No. UM-5269 dated 2 June 1983 for audio equipment and improved audio equipment commonly known as the sing-along system or karaoke
  • Patent No. UM-6237 dated 14 November 1986 audio equipment and improved audio equipment commonly known as the sing-along system or karaoke

Karaoke Sing Along System

Karaoke is a Japanese expression for singing along to a famous record with the vocals removed. Roberto del Rosario described his sing-along system as a handy multi-purpose compact machine which incorporates an amplifier speaker, one or two tape mechanisms, optional tuner or radio and microphone mixer with features to enhance one's voice, such as the echo or reverb to stimulate an opera hall or a studio sound, with the whole system enclosed in one cabinet casing.

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Bellis, Mary. "Roberto del Rosario." ThoughtCo, Apr. 6, 2017, thoughtco.com/roberto-del-rosario-inventor-1991725. Bellis, Mary. (2017, April 6). Roberto del Rosario. Retrieved from https://www.thoughtco.com/roberto-del-rosario-inventor-1991725 Bellis, Mary. "Roberto del Rosario." ThoughtCo. https://www.thoughtco.com/roberto-del-rosario-inventor-1991725 (accessed February 24, 2018).