GB613416A - Improvements in or relating to electrical musical instruments - Google Patents

Improvements in or relating to electrical musical instruments

Info

Publication number
GB613416A
GB613416A GB1160/45A GB116045A GB613416A GB 613416 A GB613416 A GB 613416A GB 1160/45 A GB1160/45 A GB 1160/45A GB 116045 A GB116045 A GB 116045A GB 613416 A GB613416 A GB 613416A
Authority
GB
United Kingdom
Prior art keywords
pass filter
low
pass
electrical musical
frequencies
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
GB1160/45A
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.)
Compton John Organ Co Ltd
Original Assignee
Compton John Organ Co Ltd
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 Compton John Organ Co Ltd filed Critical Compton John Organ Co Ltd
Priority to GB1160/45A priority Critical patent/GB613416A/en
Publication of GB613416A publication Critical patent/GB613416A/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
    • G10H5/00—Instruments in which the tones are generated by means of electronic generators
    • G10H5/02—Instruments in which the tones are generated by means of electronic generators using generation of basic tones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

613,416. Electrical musical instruments. COMPTON ORGAN CO., Ltd., J., and BOURN, L. E. A. Jan. 15, 1945, No. 1160. [Class 88 (ii)] In an electrical musical instrument in which tone generators are brought into operation selectively by stops and keys, key click is prevented by connecting a low-pass filter in each key circuit controlling a generator and a high-pass filter in the output circuit. The low-pass filter reduces key noise to a lowfrequency thud which cannot pass the highpass filter. To carry out the invention effectively, the scale is divided into groups of frequencies and the high-pass filter for each group suppresses frequencies below that of the lowest note in the group. It is possible in the lowest frequency group to make the low-pass filter only pass subaudio frequencies and to dispense with the high-pass filter. This gives a sluggish attack but is not a disadvantage on low notes. Specifications 403,444, 433,050 and 613,414 are referred to.
GB1160/45A 1945-01-15 1945-01-15 Improvements in or relating to electrical musical instruments Expired GB613416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1160/45A GB613416A (en) 1945-01-15 1945-01-15 Improvements in or relating to electrical musical instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1160/45A GB613416A (en) 1945-01-15 1945-01-15 Improvements in or relating to electrical musical instruments

Publications (1)

Publication Number Publication Date
GB613416A true GB613416A (en) 1948-11-29

Family

ID=9717217

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1160/45A Expired GB613416A (en) 1945-01-15 1945-01-15 Improvements in or relating to electrical musical instruments

Country Status (1)

Country Link
GB (1) GB613416A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913947A (en) * 1953-07-22 1959-11-24 Wurlitzer Co Electric organ control circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913947A (en) * 1953-07-22 1959-11-24 Wurlitzer Co Electric organ control circuit

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