 |
| Robert R. Del Rosario |
Roberto del Rosario was the president of the Trebel Music Corporation and
the inventor of the Karaoke Sing Along System (also known as One man band) 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) and the piano tuner's guide
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
He filed a lawsuit and after 5 years, he was given the sole authority
over the local production of the equipment and later developed it to
sing along system so that his voice students can have taped accompanied
to practice anytime and 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.
