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US 4,350,073 AGranted
Hybrid pipe organ with electronic tonal augmentation
OwnerRichard H. Petersoninventor
Life of this patent
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Abstract
A hybrid organ is disclosed wherein many of the musical tones comprising the complete musical instrument are produced by wind blown pipes. Other tones are produced by an electronic tone generating system and produced by loudspeakers. The electronic tone generating system is adapted especially for this purpose and includes simplified means for keeping the electronically produced tones in tune with the organ pipes in spite of the fact that the pipes change their pitch with even slight temperature and other atmopsheric changes.
Claims10
A tuning circuit for a hybrid organ having both wind and electronically generated tones, comprising:
- a plurality of frequency synthesizers, each synthesizer producing a corresponding one of a plurality of octaves of electronically generated tones;
- a master oscillator for each frequency synthesizer, all of said oscillators having the same nominal frequency of oscillation;
- a frequency changer for each master oscillator, each frequency changer being capable fo varying the frequency of the output from its corresponding master oscillator;
- means connecting the frequency-varied output of each said master oscillator to its corresponding frequency synthesizer;
- and
- tuning control means connected in common to all of said frequency changers for simultaneously varying all of said frequency changers, whereby the outputs of all of said master oscillators can be simultaneously varied from their nominal frequencies to vary the pitches of the electronically generated tones produced by said frequency synthesizers.
3 more elements
Dependencies are inferred from the claim text.