GB1115318A - Photoelectric musical instrument - Google Patents

Photoelectric musical instrument

Info

Publication number
GB1115318A
GB1115318A GB1482966A GB1482966A GB1115318A GB 1115318 A GB1115318 A GB 1115318A GB 1482966 A GB1482966 A GB 1482966A GB 1482966 A GB1482966 A GB 1482966A GB 1115318 A GB1115318 A GB 1115318A
Authority
GB
United Kingdom
Prior art keywords
disc
photo
pitch
eliminating
cells
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1482966A
Inventor
Edward Monrad Jones
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DH Baldwin Co
Original Assignee
DH Baldwin Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DH Baldwin Co filed Critical DH Baldwin Co
Priority to GB4523967A priority Critical patent/GB1115319A/en
Priority to GB1482966A priority patent/GB1115318A/en
Publication of GB1115318A publication Critical patent/GB1115318A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H3/00—Instruments in which the tones are generated by electromechanical means
    • G10H3/03—Instruments in which the tones are generated by electromechanical means using pick-up means for reading recorded waves, e.g. on rotating discs drums, tapes or wires
    • G10H3/06—Instruments in which the tones are generated by electromechanical means using pick-up means for reading recorded waves, e.g. on rotating discs drums, tapes or wires using photoelectric pick-up means

Abstract

1,115,318. Electrophonic musical instruments. D. H. BALDWIN CO. 4 April, 1966, No. 14829/66. Heading G5J. [Also in Division H1] A photo-electric musical instrument (e.g. an organ) comprises a rotating pitch disc 8 and a fixed voice disc 9 which forms one wall of a sealed chamber 35 containing several arrays of photo-electric elements 26. As described, desiccant 32 ensures that the chamber 35 (sealed by rings 23, 25) is maintained free from moisture, thus eliminating the need for encapsulated photo-cells. Arrays of open photo-cells each of which can be individually selected by co-ordinate techniques under control of keys and stops (Fig. 2, not shown) are provided thus eliminating the use of shutters. The pitch disc 8 is biased by a spring 20 into engagement with a drive 17. A magnet may be lowered to cooperate magnetically with teeth on an armature 38 to vary the rotational speed of the disc at a sub-audio rate to effect pitch vibrato. In order to reduce thump due to transients when additional voices are introduced, a balanced amplifier and centre-tapped transformer are employed and each stop operates ganged contacts or a potentiometer contact to gradually connect in the additional photo-cell array. Several voicing bands relatively displaced in phase are provided on the voicing disc for each pitch band on the pitch disc to give the effect of ensemble.
GB1482966A 1966-04-04 1966-04-04 Photoelectric musical instrument Expired GB1115318A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4523967A GB1115319A (en) 1966-04-04 1966-04-04 Photocell array structure
GB1482966A GB1115318A (en) 1966-04-04 1966-04-04 Photoelectric musical instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1482966A GB1115318A (en) 1966-04-04 1966-04-04 Photoelectric musical instrument

Publications (1)

Publication Number Publication Date
GB1115318A true GB1115318A (en) 1968-05-29

Family

ID=10048212

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1482966A Expired GB1115318A (en) 1966-04-04 1966-04-04 Photoelectric musical instrument
GB4523967A Expired GB1115319A (en) 1966-04-04 1966-04-04 Photocell array structure

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB4523967A Expired GB1115319A (en) 1966-04-04 1966-04-04 Photocell array structure

Country Status (1)

Country Link
GB (2) GB1115318A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602158A (en) * 1984-10-26 1986-07-22 Itek Corporation PbS-PbSe IR detector arrays

Also Published As

Publication number Publication date
GB1115319A (en) 1968-05-29

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