GB489179A - Improvements in means for producing artificial echo - Google Patents

Improvements in means for producing artificial echo

Info

Publication number
GB489179A
GB489179A GB217937A GB217937A GB489179A GB 489179 A GB489179 A GB 489179A GB 217937 A GB217937 A GB 217937A GB 217937 A GB217937 A GB 217937A GB 489179 A GB489179 A GB 489179A
Authority
GB
United Kingdom
Prior art keywords
spring
terminals
delayed
echo
electric
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
GB217937A
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.)
KENNETH ARTHUR MACFADYEN
General Electric Co PLC
Original Assignee
KENNETH ARTHUR MACFADYEN
General Electric Co PLC
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 KENNETH ARTHUR MACFADYEN, General Electric Co PLC filed Critical KENNETH ARTHUR MACFADYEN
Priority to GB217937A priority Critical patent/GB489179A/en
Publication of GB489179A publication Critical patent/GB489179A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/08—Arrangements for producing a reverberation or echo sound
    • G10K15/10—Arrangements for producing a reverberation or echo sound using time-delay networks comprising electromechanical or electro-acoustic devices

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Prostheses (AREA)

Abstract

489,179. Acoustic delay apparatus; organs. GENERAL ELECTRIC CO., Ltd., and MACFADYEN, K. A. Jan. 25, 1937, No. 2179. [Classes 13 and 88 (ii)] [Also in Group XXXIX] In apparatus for producing delayed sounds utilized for the artificial production of echo, electric currents corresponding to the sounds to be delayed are applied at terminals 6, 7 to a portion of a spring 1 lying within the gap 4 of a moving coil unit 2, 3. The vibrations are transmitted by the spring with a velocity less than that of sound in air at N.T.P. and the relatively delayed mechanical vibrations of the portion of the spring lying in the gap 4<1> of a similar moving- coil unit 2<1>, 3<1> produce currents which are fed to an amplifier and to the transmission line at terminals 6<1>, 7<1>. A source of potential connected to the terminals 5, 5<1> maintains a constant current in the spring 1. The apparatus may be utilized to produce artificial echo for electric organs. British Specification 276,052, [Class 40 (v)], and U.S.A. Specification 1,852,795 are referred to.
GB217937A 1937-01-25 1937-01-25 Improvements in means for producing artificial echo Expired GB489179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB217937A GB489179A (en) 1937-01-25 1937-01-25 Improvements in means for producing artificial echo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB217937A GB489179A (en) 1937-01-25 1937-01-25 Improvements in means for producing artificial echo

Publications (1)

Publication Number Publication Date
GB489179A true GB489179A (en) 1938-07-21

Family

ID=9734963

Family Applications (1)

Application Number Title Priority Date Filing Date
GB217937A Expired GB489179A (en) 1937-01-25 1937-01-25 Improvements in means for producing artificial echo

Country Status (1)

Country Link
GB (1) GB489179A (en)

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