GB403843A - Improvements in or relating to resonating apparatus associated with loud-speakers and sound diffusers - Google Patents

Improvements in or relating to resonating apparatus associated with loud-speakers and sound diffusers

Info

Publication number
GB403843A
GB403843A GB7754/33A GB775433A GB403843A GB 403843 A GB403843 A GB 403843A GB 7754/33 A GB7754/33 A GB 7754/33A GB 775433 A GB775433 A GB 775433A GB 403843 A GB403843 A GB 403843A
Authority
GB
United Kingdom
Prior art keywords
tubes
diaphragm
resonating
loud
chambers
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
GB7754/33A
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.)
ANDRE D'ALTON
Original Assignee
ANDRE D'ALTON
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 ANDRE D'ALTON filed Critical ANDRE D'ALTON
Publication of GB403843A publication Critical patent/GB403843A/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
    • H04R1/2853—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line
    • H04R1/2857—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line for loudspeaker transducers
    • 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
    • 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
    • H04R1/2838—Enclosures comprising vibrating or resonating arrangements of the bandpass type
    • H04R1/2842—Enclosures comprising vibrating or resonating arrangements of the bandpass type for loudspeaker transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

403,843. Acoustic resonators. ALTON, A. D', 3, AllÚe Borghese, Neuilly-sur-Seine, France. March 14, 1933, No. 7754. Convention date, June 3, 1932. [Class 13.] A resonating - apparatus adapted to be associated with an electrically driven soundreproducing diaphragm, comprises two chambers one on either side of the diaphragm and each communicating with resonating tubes. In one embodiment, chambers 11, 12, Fig. 1, are arranged in front of and behind the diaphragm of a loud-speaker 10 the former chamber communicating with resonating tubes 13 and the latter with tubes 14, some of which are provided with openings 15 at their base to lower their resonating frequency by one octave. The tubes are tuned to the notes of the musical scale the group 13 covering the upper and the group 14 covering the lower part of the range and their position is calculated so as to produce maximum excitation ; the shorter the tube the nearer it is placed to the diaphragm. The dimensions and volumes of the chambers 11, 12 are small and large respectively to produce tight and loose coupling respectively. In a modification the loudspeaker 10, Fig. 3, is arranged horizontally, and a series of tubes 16 corresponding to the highest notes or to the range of the human voice are placed horizontally in front of the diaphragm, a plug 17 being provided to close an opening in front of the loud-speaker should the group 16 not be utilized. Tubes 18 corresponding to the next part of the range are placed vertically above the chamber 11. Tubes 19 for the middle range are fitted to the chamber 12, while tubes 20, 21 for the lowest notes are attached to the extremities of chambers 12 and 11. The tubes corresponding to the higher notes may be repeated several times and several loud-speakers may be used, if desired with suitable predetermined characteristics.
GB7754/33A 1932-06-03 1933-03-14 Improvements in or relating to resonating apparatus associated with loud-speakers and sound diffusers Expired GB403843A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR403843X 1932-06-03

Publications (1)

Publication Number Publication Date
GB403843A true GB403843A (en) 1934-01-04

Family

ID=8897036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7754/33A Expired GB403843A (en) 1932-06-03 1933-03-14 Improvements in or relating to resonating apparatus associated with loud-speakers and sound diffusers

Country Status (2)

Country Link
FR (1) FR739681A (en)
GB (1) GB403843A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0075812A1 (en) * 1981-09-25 1983-04-06 Brunnquell GmbH Fabrik elektrotechnischer Apparate Electronic gong
GB2302231A (en) * 1995-03-14 1997-01-08 Matsushita Electric Ind Co Ltd Acoustic duct for a loud speaker with a holed resonance cavity
WO2016176716A1 (en) * 2015-05-07 2016-11-10 Acoustic 3D Holdings Ltd Acoustical diffusion manifold

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES187409Y (en) * 1973-01-05 1974-08-16 Portela Seijo ACOUSTIC BAFFLE FOR SPEAKERS.
FR2459599A1 (en) * 1979-06-14 1981-01-09 Lagarrigue Jacques Loudspeaker unit using cardboard tubes - of different lengths and diameters supported coaxially in front of loudspeaker
DE3843050C2 (en) * 1987-12-25 1998-01-15 Yamaha Corp Electric acoustic transducer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0075812A1 (en) * 1981-09-25 1983-04-06 Brunnquell GmbH Fabrik elektrotechnischer Apparate Electronic gong
GB2302231A (en) * 1995-03-14 1997-01-08 Matsushita Electric Ind Co Ltd Acoustic duct for a loud speaker with a holed resonance cavity
US5793000A (en) * 1995-03-14 1998-08-11 Matsushita Electric Industrial Co., Ltd. Speaker system
GB2302231B (en) * 1995-03-14 1999-01-13 Matsushita Electric Ind Co Ltd Speaker system
WO2016176716A1 (en) * 2015-05-07 2016-11-10 Acoustic 3D Holdings Ltd Acoustical diffusion manifold
CN107533840A (en) * 2015-05-07 2018-01-02 3D声学控股有限责任公司 Acoustics diffusion manifold
US10419846B2 (en) 2015-05-07 2019-09-17 Acoustic 3D Holdings Ltd Acoustical diffusion manifold
CN107533840B (en) * 2015-05-07 2022-01-25 3D声学控股有限责任公司 Acoustic diffusion manifold

Also Published As

Publication number Publication date
FR739681A (en) 1933-01-16

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