G - Physics – 10 – H
Patent
G - Physics
10
H
84/1.1
G10H 1/00 (2006.01) G10H 1/14 (2006.01)
Patent
CA 1159287
SIMULATED WIND NOISE IN ELECTRONIC ORGANS USING DIGITAL NOISE GENERATORS ABSTRACT OF THE DISCLOSURE An electronic musical instrument of the type producing pipe organ-like sounds including a circuit for simulating wind noise by causing a random perturbation from the nominal frequency of tune,which an organ flue pipe exhibits when soundings through the use of digital noise generators which are utilized to approximate an analog white or random noise source. The digital noise generators produce digital noise signals which are used to frequency modulate the instrument tone generator to produce substantially random perturbations in the generator output signal frequency. The present invention may be used with musical instruments having a single tone generator system composed of either a multiplicity of oscillators with a vibrato input, or a top octave frequency generator integrated circuit and a single oscillator with a vibrato input, or a transposer system. Furthermore, the present inven- tion finds utility with multiple generator organ systems where all of the generators may be randomly modulated by independent and unlocked noise signals.
369959
Baldwin Piano & Organ Company
Smart & Biggar
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