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BR9915048A - Speakers that comprise a diffuse sound source not correlated with phase - Google Patents

Speakers that comprise a diffuse sound source not correlated with phase

Info

Publication number
BR9915048A
BR9915048A BR9915048-4A BR9915048A BR9915048A BR 9915048 A BR9915048 A BR 9915048A BR 9915048 A BR9915048 A BR 9915048A BR 9915048 A BR9915048 A BR 9915048A
Authority
BR
Brazil
Prior art keywords
sound source
phase
speakers
correlated
diffuse sound
Prior art date
Application number
BR9915048-4A
Other languages
Portuguese (pt)
Inventor
Neil Harris
Graham Bank
Original Assignee
New Transducers 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
Priority claimed from GBGB9824255.5A external-priority patent/GB9824255D0/en
Priority claimed from GBGB9914410.7A external-priority patent/GB9914410D0/en
Application filed by New Transducers Ltd filed Critical New Transducers Ltd
Publication of BR9915048A publication Critical patent/BR9915048A/en

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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
    • 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

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Stereophonic System (AREA)

Abstract

A loudspeaker comprising a phase uncorrelated diffuse sound source and a duct or wave guide coupled to the sound source to direct acoustic energy from the source, the duct or wave guide having a substantially parallel section extending from the vicinity of the sound source and a termination positioned remotely from the panel.
BR9915048-4A 1998-11-06 1999-11-04 Speakers that comprise a diffuse sound source not correlated with phase BR9915048A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9824255.5A GB9824255D0 (en) 1998-11-06 1998-11-06 Loudspeakers
GBGB9914410.7A GB9914410D0 (en) 1999-06-22 1999-06-22 Reflector
PCT/GB1999/003613 WO2000028780A1 (en) 1998-11-06 1999-11-04 Loudspeakers comprising a phase uncorrelated diffuse sound source

Publications (1)

Publication Number Publication Date
BR9915048A true BR9915048A (en) 2001-08-07

Family

ID=26314618

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9915048-4A BR9915048A (en) 1998-11-06 1999-11-04 Speakers that comprise a diffuse sound source not correlated with phase

Country Status (14)

Country Link
EP (1) EP1125472B1 (en)
JP (1) JP2002530031A (en)
KR (1) KR20010083946A (en)
CN (1) CN1140158C (en)
AT (1) ATE256959T1 (en)
AU (1) AU746872B2 (en)
BR (1) BR9915048A (en)
CA (1) CA2349856A1 (en)
DE (1) DE69913726D1 (en)
IL (1) IL142430A0 (en)
NZ (1) NZ510972A (en)
RU (1) RU2001115712A (en)
TW (1) TW462203B (en)
WO (1) WO2000028780A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6581719B2 (en) * 2000-08-02 2003-06-24 Alan Brock Adamson Wave shaping sound chamber
WO2004086812A1 (en) * 2003-03-25 2004-10-07 Toa Corporation Speaker system sound wave guide structure and horn speaker
US7886869B2 (en) * 2007-09-27 2011-02-15 Kevin Bastyr Acoustic waveguide mode controlling
JP5188839B2 (en) * 2008-02-28 2013-04-24 株式会社ジャムコ Flat panel speaker
JP5276956B2 (en) * 2008-11-13 2013-08-28 浜名湖電装株式会社 Electric horn
JP5528569B2 (en) * 2009-12-02 2014-06-25 フラウンホッファー−ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー．ファオ Flat speaker
JP6044164B2 (en) * 2011-09-09 2016-12-14 ヤマハ株式会社 Sound equipment
CN108464012B (en) * 2016-01-14 2020-04-07 哈曼国际工业有限公司 Bidirectional loudspeaker with floating waveguide
JP7094687B2 (en) * 2017-10-31 2022-07-04 川崎車両株式会社 Railroad horn device
CN115022758B (en) * 2019-09-20 2025-06-20 广州视源电子科技股份有限公司 Electronic equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2956636A (en) * 1956-06-11 1960-10-18 Sipko L Boersma Loudspeaker
KR910004063A (en) * 1988-07-28 1991-02-28 파브리-꽁띠 루까 Apparatus and method for reproducing high fidelity sound
UA51671C2 (en) * 1995-09-02 2002-12-16 Нью Транзд'Юсез Лімітед Acoustic device
GB9705981D0 (en) * 1997-03-22 1997-05-07 New Transducers Ltd Personal computers

Also Published As

Publication number Publication date
CN1140158C (en) 2004-02-25
EP1125472A1 (en) 2001-08-22
CN1324556A (en) 2001-11-28
IL142430A0 (en) 2002-03-10
AU746872B2 (en) 2002-05-02
TW462203B (en) 2001-11-01
KR20010083946A (en) 2001-09-03
JP2002530031A (en) 2002-09-10
DE69913726D1 (en) 2004-01-29
HK1035987A1 (en) 2001-12-14
ATE256959T1 (en) 2004-01-15
NZ510972A (en) 2002-07-26
EP1125472B1 (en) 2003-12-17
CA2349856A1 (en) 2000-05-18
AU6480699A (en) 2000-05-29
WO2000028780A1 (en) 2000-05-18
RU2001115712A (en) 2003-06-10

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]