GB266395A - Improvements in or relating to acoustic apparatus - Google Patents

Improvements in or relating to acoustic apparatus

Info

Publication number
GB266395A
GB266395A GB23664/25A GB2366425A GB266395A GB 266395 A GB266395 A GB 266395A GB 23664/25 A GB23664/25 A GB 23664/25A GB 2366425 A GB2366425 A GB 2366425A GB 266395 A GB266395 A GB 266395A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
wall
sound
displaced
ratio
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
GB23664/25A
Other languages
English (en)
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.)
AT&T Corp
Original Assignee
Bell Telephone Laboratories Inc
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 Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Publication of GB266395A publication Critical patent/GB266395A/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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/08—Non-electric sound-amplifying devices, e.g. non-electric megaphones
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/001—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor with vibrating mechanical coupling means between pick-up element and sound producing element
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
GB23664/25A 1924-12-20 1925-09-22 Improvements in or relating to acoustic apparatus Expired GB266395A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US757277A US1575951A (en) 1924-12-20 1924-12-20 Acoustical instrument

Publications (1)

Publication Number Publication Date
GB266395A true GB266395A (en) 1927-02-22

Family

ID=25047180

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23664/25A Expired GB266395A (en) 1924-12-20 1925-09-22 Improvements in or relating to acoustic apparatus

Country Status (3)

Country Link
US (1) US1575951A (enrdf_load_stackoverflow)
GB (1) GB266395A (enrdf_load_stackoverflow)
NL (1) NL27036C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
US1575951A (en) 1926-03-09
NL27036C (enrdf_load_stackoverflow)

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