Music – Instruments – Electrical musical tone generation
Patent
1989-05-14
1991-04-16
Perkey, W. B.
Music
Instruments
Electrical musical tone generation
84477R, 84DIG26, G10H 146, G10H 102
Patent
active
050073249
ABSTRACT:
A portable musical instrument and associated therewith a radio frequency transmitter for broadcasting to a remote receiver and audio amplifier the sounds generated by the instrument. The user-operated controls vary the sound level sent by the transmitter, vary the mixing of sound levels from pickup groups such as neck and bridge groups of an electrical guitar, and provide control signals for controlling a sound processing unit such as a reverberator associated with the audio power amplifier system. The immediate status of the gain and fader settings is relayed as an ultrasonic modulation on the portable transmitter to actuate unique display conditions in a delay element actuated from the fixed receiver to provide to the user an indication of the status of his settings. Low battery conditions in the transmitter battery unit cause unique signal conditions to be sent to the receiver, resulting in a readily visible warning display configuration. The currently selected mode, e.g., reverberation mode of an associated audio signal processor is also characterized by the unique readily visible display. System control in the portable unit is under microprocessor control, the microprocessor going to a dormant power-conserving mode when changes in instrument status or audio processor mode selection is not being commanded. A low state in the lithium battery in the transmitter system microprocessor results in a unique signal condition being transmitted to the remote unit to provide a corresponding display to warn the user of incipient battery failure.
REFERENCES:
patent: 3544696 (1970-12-01), Broussard
patent: 3781451 (1973-12-01), Nolan
patent: 3823245 (1974-07-01), Suzuki
patent: 4305320 (1981-12-01), Peavey
patent: 4361067 (1982-11-01), Ishii
patent: 4418599 (1983-12-01), Raskin
patent: 4545278 (1985-10-01), Gagon et al.
patent: 4586417 (1986-05-01), Kato et al.
patent: 4699038 (1987-10-01), Wedge
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