Qrs Music Technologies, Inc.

Other

Don A Gilmore

Thomas A Dolan

An automated player for stringed instruments having a plucking mechanism and a fretting mechanism. The plucking mechanism includes a string contacting portion rotationally mounted relative to a corresponding instrument string with a rotational axis substantially perpendicular to the string, a first drive member for creating relative motion between the string and the string contacting portion. The fretting mechanism includes a carriage in depressive contact with the instrument string and a second drive member selectively positioning the carriage creating relative movement between the carriage and the string. The plucking mechanism and the fretting mechanism are attached to a frame which is attached to the instrument. The player includes an electronic control circuit that controls operation of the plucking and fretting mechanisms.

Automated stringed instrument player

An automated player for stringed instruments having a body portion including independent plucking and fretting mechanisms. The plucking mechanism includes a rotary plectrum assembly having a plurality of extendable quills positioned with its rotational axis parallel to a string of the instrument. The plectrum assembly is selectively rotatable by a first stepper motor and the quills are selectively extendable by an electric solenoid actuator, thus allowing for variable displacement of the string to produce vibration of variable intensity during operation. The fretting mechanism includes a carriage mounted to a belt and selectively driven by a second stepper motor along a track parallel to the instrument string. The carriage is in compressive contact with the string and thus may be selectively positioned at appropriate frets to shorten the vibrating length of the string. The player includes an embedded electronic circuit that controls the operation from programs installed or serially downloaded.

Automated player for stringed instruments

A piano tuning system having an electronic control circuit which receives sound through a microphone for a piano key. Based upon a comparison of this sound with stored piano fundamental frequencies, signals are sent to a drive unit. An electrically driven drive unit has a push/pull solenoid with an actuator which can move an internal drive shaft along a spline shaft. Movement of the drive shaft with respect to associated clutches moves any of three worm gears, each having dependent tuning head wrenches which turn the piano's tuning pins. Adjustments may be made to the spacing between worm gears to squeeze or expand their relative positions with respect to each other by an external housing thumb wheel. A method for implementing the tuning of piano notes is also set forth.

Growing community of inventors

Kansas City, MO, United States of America

Don A Gilmore