GB649993A - Improvements in or relating to acoustic devices - Google Patents

Improvements in or relating to acoustic devices

Info

Publication number
GB649993A
GB649993A GB838648A GB838648A GB649993A GB 649993 A GB649993 A GB 649993A GB 838648 A GB838648 A GB 838648A GB 838648 A GB838648 A GB 838648A GB 649993 A GB649993 A GB 649993A
Authority
GB
United Kingdom
Prior art keywords
acoustic devices
relating
loud
speaker
marginal relays
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
GB838648A
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 GB838648A priority Critical patent/GB649993A/en
Publication of GB649993A publication Critical patent/GB649993A/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
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/36—Accompaniment arrangements

Landscapes

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

Abstract

649,993. Musical instruments. FURBER, J. March 22, 1948, No. 8386. [Class 88 (ii)] [Also in Group XXXIX] A number of acoustic devices F, G, H, auxiliary to the loud-speaker providing the main part of the music, are normally operative but as the current to the loud-speaker increases, marginal relays M, N, P operate to cut-out F, G, H in turn. Alternatively (Fig. 2, not shown), F, G, H are normally inoperative and are put into circuit by the marginal relays.
GB838648A 1948-03-22 1948-03-22 Improvements in or relating to acoustic devices Expired GB649993A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB838648A GB649993A (en) 1948-03-22 1948-03-22 Improvements in or relating to acoustic devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB838648A GB649993A (en) 1948-03-22 1948-03-22 Improvements in or relating to acoustic devices

Publications (1)

Publication Number Publication Date
GB649993A true GB649993A (en) 1951-02-07

Family

ID=9851542

Family Applications (1)

Application Number Title Priority Date Filing Date
GB838648A Expired GB649993A (en) 1948-03-22 1948-03-22 Improvements in or relating to acoustic devices

Country Status (1)

Country Link
GB (1) GB649993A (en)

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