Piano

Details Piano Piano

1996-08-14

1997-05-13

Spyrou, Cassandra C.

Music

Instruments

Combined

84615, 84 20, G10D 1500

Patent

active

056294905

ABSTRACT:
In a piano which is enabled to provide performance using electronic sound source as well as normal piano play, the proposed piano is such a piano where there is no difference of balance between the normal piano play and the play using electronic sound source. When key is moved in an electronic sound source mode, CPU detects a number n of the key (S110), detects a time lag .DELTA. T between the timings at which blockage is caused between light emitting elements and light receiving elements of both key sensors (S120), and calculates a velocity V according to the time lag .DELTA. T (S130). Then, performance data is prepared according to these key depression information, at the performance data preparation routine (S140), and a delay time Td corresponding to the velocity V is determined by using a delay time determination table (S150). Subsequently, it is determined whether the delay time Td has elapsed (S160). When it has elapsed, the performance data is outputted to the electronic sound source (S170). As a result, sound is created, with the delay time Td, according to the key depression intensity as an interval after the key depression.

REFERENCES:
patent: 5374775 (1994-12-01), Kawamura et al.

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