Automatic legato keying for a keyboard electronic musical instru

Details Automatic legato keying for a keyboard electronic musical instru Automatic legato keying for a keyboard electronic musical instru

1980-09-08

1982-06-01

Truhe, J. V.

Music

Instruments

84 113, 84 124, G10H 102

Patent

active

043321836

ABSTRACT:
In a keyboard operated electronic musical instrument a detector is provided for measuring the time interval between successively actuated keyswitches. If the time interval is less than a preselected time threshold, the notes are generated with a normal ADSR envelope and if the time interval exceeds this time threshold then the notes are generated with a legato ADSR envelope. Provision is provided to accomodate variations in time when a chord is played. The system will return to the normal ADSR for time intervals greater than that for a second preselected time threshold for notes played with large time separations. The same control signals are provided to control other musical effects such as tone selection, vibrato and portamento.

REFERENCES:
patent: 3809786 (1974-05-01), Deutsch
patent: 3929053 (1975-12-01), Deutsch
patent: 3951030 (1976-04-01), Deutsch

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