GB489588A - Improvements in or relating to sound-translating devices - Google Patents

Improvements in or relating to sound-translating devices

Info

Publication number
GB489588A
GB489588A GB21186/37A GB2118637A GB489588A GB 489588 A GB489588 A GB 489588A GB 21186/37 A GB21186/37 A GB 21186/37A GB 2118637 A GB2118637 A GB 2118637A GB 489588 A GB489588 A GB 489588A
Authority
GB
United Kingdom
Prior art keywords
tubes
cabinet
acoustic
tube
loud
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
GB21186/37A
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.)
CABLES Ltd
STC PLC
Original Assignee
CABLES Ltd
Standard Telephone and Cables 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 CABLES Ltd, Standard Telephone and Cables PLC filed Critical CABLES Ltd
Publication of GB489588A publication Critical patent/GB489588A/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
    • 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 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
    • H04R1/2823—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material
    • H04R1/2826—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material for loudspeaker transducers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
GB21186/37A 1936-09-02 1937-07-30 Improvements in or relating to sound-translating devices Expired GB489588A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR822383T 1936-09-02

Publications (1)

Publication Number Publication Date
GB489588A true GB489588A (en) 1938-07-29

Family

ID=9280867

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21186/37A Expired GB489588A (en) 1936-09-02 1937-07-30 Improvements in or relating to sound-translating devices

Country Status (4)

Country Link
BE (1) BE423380A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
FR (1) FR822383A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
GB (1) GB489588A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
NL (1) NL49661C (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917127A (en) * 1955-02-17 1959-12-15 Pye Ltd Acoustic enclosure for loudspeakers
US3283848A (en) * 1965-10-21 1966-11-08 Patti Thomas Allan Sound reproduction system
GB2234137A (en) * 1989-07-18 1991-01-23 Messerschmitt Boelkow Blohm A device for the detection and location of sound waves
GB2235852A (en) * 1989-09-04 1991-03-13 Sony Corp Transducer having two or more ducts
FR2753872A1 (fr) * 1996-09-25 1998-03-27 Master Enceinte acoustique destinee plus particulierement a des hauts-parleurs de puissance pour les basses frequences
FR2824990A1 (fr) * 2001-05-15 2002-11-22 Jean Pierre Morkerken Emetteur de son et haut-parleur
US9716940B2 (en) 2013-03-22 2017-07-25 Flare Audio Technologies Limited Acoustic device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917127A (en) * 1955-02-17 1959-12-15 Pye Ltd Acoustic enclosure for loudspeakers
US3283848A (en) * 1965-10-21 1966-11-08 Patti Thomas Allan Sound reproduction system
GB2234137B (en) * 1989-07-18 1994-01-12 Messerschmitt Boelkow Blohm A device for the detection and location of sound waves
GB2234137A (en) * 1989-07-18 1991-01-23 Messerschmitt Boelkow Blohm A device for the detection and location of sound waves
GB2235852A (en) * 1989-09-04 1991-03-13 Sony Corp Transducer having two or more ducts
GB2235852B (en) * 1989-09-04 1993-11-10 Sony Corp Transducer having two or more ducts
US5115473A (en) * 1989-09-04 1992-05-19 Sony Corporation Transducer having two ducts
FR2753872A1 (fr) * 1996-09-25 1998-03-27 Master Enceinte acoustique destinee plus particulierement a des hauts-parleurs de puissance pour les basses frequences
EP0833544A1 (fr) * 1996-09-25 1998-04-01 Master SàRL Enceinte acoustique destinée plus particulièrement à des hauts-parleurs de puissance pour les basses fréquences
FR2824990A1 (fr) * 2001-05-15 2002-11-22 Jean Pierre Morkerken Emetteur de son et haut-parleur
WO2002093978A3 (fr) * 2001-05-15 2004-02-12 Jean-Pierre Morkerken Emetteur de son et haut-parleur
US7011178B2 (en) 2001-05-15 2006-03-14 Jean-Pierre Morkerken Sound transmitter and speaker
US9716940B2 (en) 2013-03-22 2017-07-25 Flare Audio Technologies Limited Acoustic device

Also Published As

Publication number Publication date
NL49661C (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
BE423380A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
FR822383A (fr) 1937-12-29

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