Single key preferential selection device in electronic musical i

Details Single key preferential selection device in electronic musical i Single key preferential selection device in electronic musical i

1978-06-02

1980-05-27

Witkowski, S. J.

Music

Instruments

84DIG2, 328137, 328154, 340147LP, 340166R, G10H 100, G10H 500

Patent

active

042044529

ABSTRACT:
A monophonic electronic musical instrument comprises a single key preferential selection device. Key switches are connected in a matrix fashion between the group lines and the individual lines. The group lines are sequentially and repetitively scanned to detect the first one in the sequence of the groups where any key switch is closed, and the individual lines to which any closed key is connected deliver key detection signals, which in turn are introduced into a preference circuit to select the key detection signal of the highest priority. The group detection and the individual detection co-operatively designate a single key for tone production.

REFERENCES:
patent: 4012980 (1977-03-01), Suzuki
patent: 4055103 (1977-10-01), Machanian
patent: 4074233 (1978-02-01), Swain
patent: 4100831 (1978-07-01), Deutsch
patent: 4122744 (1978-10-01), Uetrecht
patent: 4138916 (1979-02-01), Kitagawa
patent: 4138917 (1979-02-01), Sakashita et al.
patent: 4141268 (1979-02-01), Kugisawa

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