GB303837A - Improvements in or connected with sound reproducing devices - Google Patents

Improvements in or connected with sound reproducing devices

Info

Publication number
GB303837A
GB303837A GB954/29A GB95429A GB303837A GB 303837 A GB303837 A GB 303837A GB 954/29 A GB954/29 A GB 954/29A GB 95429 A GB95429 A GB 95429A GB 303837 A GB303837 A GB 303837A
Authority
GB
United Kingdom
Prior art keywords
sound
reproducers
emitted
frequency
separate
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
GB954/29A
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 TALKING PICTURES Ltd
Original Assignee
BRITISH TALKING PICTURES 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 TALKING PICTURES Ltd filed Critical BRITISH TALKING PICTURES Ltd
Publication of GB303837A publication Critical patent/GB303837A/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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H04R3/14—Cross-over networks

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

303,837. British Talking Pictures, Ltd., (Assignees of Forest, L. de). Jan. 10, 1928, [Convention date]. Loud-speakers; magnetic instruments ; systems for transmitting music.- Audio-frequency currents from a phono-film &c., after passing through a two channel audio -amplifier, are fed to separate reproducers, designed to accentuate, respectively, the high, and low frequencies and the sound from the two reproducers is smoothly combined and emitted from a single bell-mouth, as in Fig. 2, or else, as in Fig. 3, the sound from the necks 31, 32 is combined at 33 and then emitted from two bell-mouths 34, 35. The high-frequency reproducer has a small plane diaphragm while the low-frequency reproducer has a large heavy plane or conical diaphragm. The Specification as open to inspection under Sect. 91 (3) (a) describes the use of two separate horns one of metal such as thin brass or silver, the other a large exponential horn of wood, fibre or composite material. This subject-matter does not appear in the Specification as accepted.
GB954/29A 1928-01-10 1929-01-10 Improvements in or connected with sound reproducing devices Expired GB303837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US303837XA 1928-01-10 1928-01-10

Publications (1)

Publication Number Publication Date
GB303837A true GB303837A (en) 1930-03-06

Family

ID=21853959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB954/29A Expired GB303837A (en) 1928-01-10 1929-01-10 Improvements in or connected with sound reproducing devices

Country Status (1)

Country Link
GB (1) GB303837A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5526456A (en) * 1993-02-25 1996-06-11 Renku-Heinz, Inc. Multiple-driver single horn loud speaker
US6411718B1 (en) 1999-04-28 2002-06-25 Sound Physics Labs, Inc. Sound reproduction employing unity summation aperture loudspeakers
US8194905B1 (en) 2007-02-14 2012-06-05 Vinther Sr Gordon Alfred Coherent wave full spectrum acoustic horn
WO2017083708A1 (en) 2015-11-12 2017-05-18 Bisset Anthony Allen Coaxial centerbody point-source (ccps) horn speaker system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5526456A (en) * 1993-02-25 1996-06-11 Renku-Heinz, Inc. Multiple-driver single horn loud speaker
US6411718B1 (en) 1999-04-28 2002-06-25 Sound Physics Labs, Inc. Sound reproduction employing unity summation aperture loudspeakers
US8194905B1 (en) 2007-02-14 2012-06-05 Vinther Sr Gordon Alfred Coherent wave full spectrum acoustic horn
WO2017083708A1 (en) 2015-11-12 2017-05-18 Bisset Anthony Allen Coaxial centerbody point-source (ccps) horn speaker system
US10375470B2 (en) 2015-11-12 2019-08-06 Anthony Allen BISSET Coaxial centerbody point-source (CCPS) horn speaker system

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