Electro-mechanical keyboard memory for an electronic musical...

G - Physics – 10 – B

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84/1.7

G10B 3/12 (2006.01) G10H 1/34 (2006.01) G10H 1/38 (2006.01)

Patent

CA 1100793

ABSTRACT OF THE DISCLOSURE In a keyboard electronic musical instrument such as an electronic organ, an electro-mechanical memory device for holding in the down or actuated position one or more simultaneously depressed accompaniment chord and bass playing keys after the finger pressure from the instrument player is removed. The signal representing the note or chord associated with the depressed key or keys is sustained as long as the keys remain latched down. A plurality of keys of the lower or accompaniment manual are adapted to be retained in the depressed position and operate as part of the electro-mechani- cal memory device. When a key or group of keys are latched down, the depression by the instrument player of another key releases the previously retained keys but the newly depressed key is latched down. The electro- mechanical memory also operates in conjunction with the touch mode of the automatic rhythm unit to provide a rhythm signal when the accompaniment keys are retained in the depressed position. The organ keyboard functions in the standard manner when the electro-mechanical memory is deactivated.

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