GB231421A - Improvements in sound-reproducing apparatus - Google Patents

Improvements in sound-reproducing apparatus

Info

Publication number
GB231421A
GB231421A GB23691/24A GB2369124A GB231421A GB 231421 A GB231421 A GB 231421A GB 23691/24 A GB23691/24 A GB 23691/24A GB 2369124 A GB2369124 A GB 2369124A GB 231421 A GB231421 A GB 231421A
Authority
GB
United Kingdom
Prior art keywords
baffle
sound
diaphragm
reproducing apparatus
length
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
GB23691/24A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB231421A publication Critical patent/GB231421A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • 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 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Toys (AREA)
GB23691/24A 1924-03-27 1924-10-07 Improvements in sound-reproducing apparatus Expired GB231421A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US702452A US1631646A (en) 1924-03-27 1924-03-27 Sound-reproducing apparatus

Publications (1)

Publication Number Publication Date
GB231421A true GB231421A (en) 1925-09-17

Family

ID=24821277

Family Applications (3)

Application Number Title Priority Date Filing Date
GB23690/24A Expired GB231420A (en) 1924-03-27 1924-10-07 Improvements in sound-reproducing apparatus
GB23691/24A Expired GB231421A (en) 1924-03-27 1924-10-07 Improvements in sound-reproducing apparatus
GB28723/35A Expired GB464418A (en) 1924-03-27 1935-10-17 Improvements in or relating to sound reproducing apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB23690/24A Expired GB231420A (en) 1924-03-27 1924-10-07 Improvements in sound-reproducing apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB28723/35A Expired GB464418A (en) 1924-03-27 1935-10-17 Improvements in or relating to sound reproducing apparatus

Country Status (4)

Country Link
US (1) US1631646A (ja)
BE (3) BE417960A (ja)
FR (3) FR30476E (ja)
GB (3) GB231420A (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445276A (en) * 1945-05-04 1948-07-13 Massa Frank Electrodynamic loudspeaker
GB774121A (en) * 1954-03-18 1957-05-08 Ferranti Ltd Improvements relating to gramophone pick-ups
US6704425B1 (en) * 1999-11-19 2004-03-09 Virtual Bass Technologies, Llc System and method to enhance reproduction of sub-bass frequencies
FR2955446B1 (fr) 2010-01-15 2015-06-05 Phl Audio Transducteur electrodynamique a dome et suspension flottante
FR2955444B1 (fr) 2010-01-15 2012-08-03 Phl Audio Systeme de haut-parleur coaxial a chambre de compression
FR2955445B1 (fr) 2010-01-15 2013-06-07 Phl Audio Transducteur electrodynamique a dome et suspension interne

Also Published As

Publication number Publication date
GB464418A (en) 1937-04-19
GB231420A (en) 1925-08-20
BE421801A (ja) 1937-06-30
FR47708E (fr) 1937-06-22
BE324881A (ja) 1949-09-30
BE417960A (ja) 1936-11-30
FR595818A (fr) 1925-10-09
US1631646A (en) 1927-06-07
FR30476E (fr) 1926-07-17

Similar Documents

Publication Publication Date Title
FR45547E (fr) Perfectionnements aux appareils de transmission, d'enregistrement, et de reproduction des sons
GB231421A (en) Improvements in sound-reproducing apparatus
GB331044A (en) Improvements in or relating to hearing devices
GB310490A (en) Improvements relating to sound reproducing apparatus or loud speakers
GB271021A (en) Improvements in electromagnetic acoustic apparatus
FR1131551A (fr) Générateurs puissants de sons et d'ultra-sons à émetteurs couplés
GB233008A (en) Improvements in telephone receivers and like instruments particularly for use in wireless receiving apparatus
GB314684A (en) Improvements relating to horns for gramophones, loud speakers and the like
FR728644A (fr) Dispositif permettant la transformation des enregistrements de vibrations sonores envibrations électriques et inversement
GB218428A (en) Improvements in loud-speaking arrangements for telephone receivers
GB274576A (en) Improvements in and relating to sound amplifying devices for use with telephone receivers
US1580418A (en) Sound-amplifying means
GB611329A (en) Improvements in or relating to acoustic instruments such as loud speakers and directional microphones
GB234939A (en) Improvements in or relating to sound reproducing apparatus
GB315561A (en) Improvements relating to the horns of gramophones and like instruments for the reproduction of sounds
GB183958A (en) Improvements in and relating to gramophones and the like instruments
GB303189A (en) Improvements in or relating to acoustic instruments
GB282127A (en) Improvements relating to sound reproducing apparatus
GB267258A (en) Improvements in or relating to horns for wireless receiving sets, gramophones and other musical instruments
FR1039511A (fr) Générateur de sons et d'ultra-sons de grande puissance
GB252053A (en) Improvements in or relating to acoustic amplifying and radiating means
GB196185A (en) Vibration damper for pianos and like musical instruments
GB259966A (en) Diaphragm sound-reproducers for wireless apparatus, gramophones and the like
GB321806A (en) Loud speaker and like acoustic apparatus
GB222934A (en) Improvements in and connected with trumpets of sound reproducing apparatus