Karaoke equipment

Details Karaoke equipment Karaoke equipment

1992-07-07

1994-05-24

Isen, Forester W.

Electrical audio signal processing systems and devices

Including amplitude or volume control

Automatic

381118, H03G 300

Patent

active

053156625

ABSTRACT:
A karaoke device which automatically returns the level of a microphone volume to a presettled level at the beginning or end of individual music pieces, and which is capable of gradually reducing the gain of the microphone amplifier by a predetermined value when an output volume from the microphone amplifier becomes excessively loud during the playing of a music piece. The karaoke device includes an adjustor for adjusting the level of the microphone volume in accordance with a manual instruction or an instruction from a control circuit; a level detector for detecting when the volume level is greater than a predetermined level; a music piece detector for detecting a beginning or end of each music piece; and a control circuit that compares a standard volume level and the volume level of when a detected signal is outputted from the music piece detector, and controls the adjustor to equalize the output level to the previously stored standard level. According to the second aspect of the invention, a comparator compares the output level from the adjustor and a predetermined reference level to lower the output level until the music piece terminates.

REFERENCES:
patent: 5046107 (1991-09-01), Iwamatsu
patent: 5054077 (1991-10-01), Suzuki
patent: 5130665 (1992-07-01), Walden
patent: 5195075 (1993-03-01), Shiba et al.

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