Music – Instruments
Patent
1978-04-26
1980-02-05
Witkowski, S. J.
Music
Instruments
84 125, 84DIG4, 179 1J, 333165, G10H 106, G10H 500
Patent
active
041866436
ABSTRACT:
Apparatus for chorus effect in an electronic musical instrument in which a passing circuit for a musical tone signal is obtained from a musical tone signal generator by operation of a key. The passing circuit is connected to a plurality of variable delay circuits which are individually controlled by a plurality of delay control signals generated by a delay control signal generator. The passing circuit for the musical tone signal has a format filter, as well as a keying signal generating circuit. An output terminal of this keying signal generating circuit is connected to a voice production initial stage change control signal generator. The latter control signal generator has an output terminal connected to the musical tone signal generator or the delay control signal generator. The voice production initial stage change control signal generator, furthermore, has a network which generates a control signal which is largely disordered from its steady state and is then damped to restore to the steady state, upon application of a keying signal generated from the keying signal generating circuit. The voice production initial stage change control signal generator, may include a low frequency oscillator for generating a vibrato signal which is disordered by a keying signal generated by the keying signal generating circuit.
REFERENCES:
patent: 4000676 (1977-01-01), Love
Kondo Nobuaki
Nishibe Kouji
Kabushiki Kaisha Kawai Gakki Seisakusho
Witkowski S. J.
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