Method for recognition of the start of a note in the case of per

Details Method for recognition of the start of a note in the case of per Method for recognition of the start of a note in the case of per

1996-01-11

1998-01-20

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

G10H 102, G10H 500

Patent

active

057103879

ABSTRACT:
A method is specified for recognition of the start of a note in the case of percussion or plucked musical instruments, in the case of which an envelope curve following function is formed from an audio signal, a comparison variable is formed from a current value of the envelope curve following function and a predecessor value corresponding to an earlier value, and the start of a note is defined at a point in time at which the comparison value exceeds a threshold value.

REFERENCES:
patent: 4263520 (1981-04-01), Kajihata et al.
patent: 4627323 (1986-12-01), Gold
patent: 4829872 (1989-05-01), Topic et al.
patent: 4841827 (1989-06-01), Uchiyama
patent: 4939471 (1990-07-01), Werbach
patent: 5048391 (1991-09-01), Uchiyama et al.
patent: 5121669 (1992-06-01), Iba et al.
patent: 5202528 (1993-04-01), Iwaooji
patent: 5223654 (1993-06-01), Fujita

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