GB381210A - Improvements in and connected with musical instruments with keyboards - Google Patents

Improvements in and connected with musical instruments with keyboards

Info

Publication number
GB381210A
GB381210A GB1895531A GB1895531A GB381210A GB 381210 A GB381210 A GB 381210A GB 1895531 A GB1895531 A GB 1895531A GB 1895531 A GB1895531 A GB 1895531A GB 381210 A GB381210 A GB 381210A
Authority
GB
United Kingdom
Prior art keywords
film
patch
note
maccullum
shutter
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
GB1895531A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1895531A priority Critical patent/GB381210A/en
Publication of GB381210A publication Critical patent/GB381210A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Abstract

381,210. Electrical musical instruments. MAcCULLUM, C. R. and MACCULLUM, A., 21, Gibson Street, Hillhead, Glasgow. July 1, 1931, No. 18955. [Class 88 (ii).] In an electrical musical instrument employing a photo-electric cell 9 and light-records of individual notes, on actuation of a shutter 5 by a key 1 a beam of light is caused by a slot 15 in a rotating cylinder 14 to traverse a stationary note-record on a film 10. Each note-record consists of a small patch having a density which varies in a vertical direction and relates to a few waves only. The height of a patch is the same as the distance between the slots 15 so that as a beam leaves at the lower edge of a patch, a fresh beam enters at the upper edge. The currents produced are passed through an amplifier 18 to a loudspeaker 19. The note records may be arranged on the film in rows representing the notes of an octave, and in columns representing the different octaves. The film may have noterecords relating to different instruments, the requisite part of the film being brought into position by e.g. a crank 20 on roll 11. By making each shutter 5 of graded transparency, the keys are given expressive touch. Lenses are provided to focus the beam.
GB1895531A 1931-07-01 1931-07-01 Improvements in and connected with musical instruments with keyboards Expired GB381210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1895531A GB381210A (en) 1931-07-01 1931-07-01 Improvements in and connected with musical instruments with keyboards

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1895531A GB381210A (en) 1931-07-01 1931-07-01 Improvements in and connected with musical instruments with keyboards

Publications (1)

Publication Number Publication Date
GB381210A true GB381210A (en) 1932-10-03

Family

ID=10121308

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1895531A Expired GB381210A (en) 1931-07-01 1931-07-01 Improvements in and connected with musical instruments with keyboards

Country Status (1)

Country Link
GB (1) GB381210A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2737840A (en) * 1951-11-23 1956-03-13 Gen Dynamics Corp Musical instrument employing tape recording
US2754713A (en) * 1950-01-24 1956-07-17 Bajolet Gabriel Photo-electric musical device
US2946252A (en) * 1955-10-31 1960-07-26 Jr Melville Clark Progressively keyed electrical musical instrument

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754713A (en) * 1950-01-24 1956-07-17 Bajolet Gabriel Photo-electric musical device
US2737840A (en) * 1951-11-23 1956-03-13 Gen Dynamics Corp Musical instrument employing tape recording
US2946252A (en) * 1955-10-31 1960-07-26 Jr Melville Clark Progressively keyed electrical musical instrument

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