Automatic musical performance device

Details Automatic musical performance device Automatic musical performance device

2004-11-29

2008-03-04

Donovan, Lincoln (Department: 2837)

Music

Instruments

Electrical musical tone generation

C084S639000, C084S724000, C084S653000

Reexamination Certificate

active

07339105

ABSTRACT:
Provide an automatic musical performance device, which is capable of giving a concert magic function in an acoustic instrument with a feeling of normally playing the acoustic instrument.A time period Tv between two points, and a tempo Tmp found based on a time intervals between two-point detection and later two-point detection, are found based on detection signals at the two points and later detection signals at the two points; and a delay time fD(Tv), which is from reception of each operating signal by a solenoid activating circuit20to commencement of a musical performance of an acoustic piano by the circuit20, and a velocity value fv(Tv, Tmp) are found based on functions. A time period Ta, which starts at the time of later detection S1in two-point detection as a reference and ends when a lever19is inverted, is found as fa(Tv) based on a function. Each operating signal is transmitted to the solenoid activating circuit20under such timing control that a transmission timing Ton comes at a time of lapse of “fa(Tv)−fD(Tv)” sec after the later detection; and the velocity value is set at fv(Tv, Tmp).

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