JPH0727750Y2 - 音響装置 - Google Patents

音響装置

Info

Publication number
JPH0727750Y2
JPH0727750Y2 JP1988104947U JP10494788U JPH0727750Y2 JP H0727750 Y2 JPH0727750 Y2 JP H0727750Y2 JP 1988104947 U JP1988104947 U JP 1988104947U JP 10494788 U JP10494788 U JP 10494788U JP H0727750 Y2 JPH0727750 Y2 JP H0727750Y2
Authority
JP
Japan
Prior art keywords
opening
port
air
resonance
air duct
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 - Fee Related
Application number
JP1988104947U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0226890U (en]
Inventor
元臣 後藤
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.)
Yamaha Corp
Original Assignee
Yamaha Corp
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 Yamaha Corp filed Critical Yamaha Corp
Priority to JP1988104947U priority Critical patent/JPH0727750Y2/ja
Priority to US07/389,737 priority patent/US4987601A/en
Publication of JPH0226890U publication Critical patent/JPH0226890U/ja
Application granted granted Critical
Publication of JPH0727750Y2 publication Critical patent/JPH0727750Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
JP1988104947U 1988-08-10 1988-08-10 音響装置 Expired - Fee Related JPH0727750Y2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1988104947U JPH0727750Y2 (ja) 1988-08-10 1988-08-10 音響装置
US07/389,737 US4987601A (en) 1988-08-10 1989-08-04 Acoustic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988104947U JPH0727750Y2 (ja) 1988-08-10 1988-08-10 音響装置

Publications (2)

Publication Number Publication Date
JPH0226890U JPH0226890U (en]) 1990-02-21
JPH0727750Y2 true JPH0727750Y2 (ja) 1995-06-21

Family

ID=14394289

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988104947U Expired - Fee Related JPH0727750Y2 (ja) 1988-08-10 1988-08-10 音響装置

Country Status (2)

Country Link
US (1) US4987601A (en])
JP (1) JPH0727750Y2 (en])

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0226890Y2 (en]) * 1985-07-03 1990-07-20
EP0410352B1 (en) * 1989-07-24 1994-09-28 Matsushita Electric Industrial Co., Ltd. Loudspeaker system
NL8902831A (nl) * 1989-11-16 1991-06-17 Philips Nv Luidsprekersysteem bevattende een helmholtz resonator gekoppeld met een akoestische buis.
JP3157210B2 (ja) * 1991-09-04 2001-04-16 パイオニア株式会社 ホーンスピーカ
DE69431391T2 (de) * 1993-12-16 2003-05-15 Kabushiki Kaisha Toshiba, Kawasaki Lautsprechersystem für Fernsehgeräte
US5517573A (en) * 1994-01-04 1996-05-14 Polk Investment Corporation Ported loudspeaker system and method with reduced air turbulence
US5892183A (en) * 1997-07-26 1999-04-06 U.S. Philips Corporation Loudspeaker system having a bass-reflex port
US7711134B2 (en) * 2001-06-25 2010-05-04 Harman International Industries, Incorporated Speaker port system for reducing boundary layer separation
DE102004021546A1 (de) * 2004-05-03 2005-12-08 Avantgarde Acoustic Lautsprechersysteme Gmbh Hornlautsprecher
WO2006023728A2 (en) * 2004-08-16 2006-03-02 Harman International Industries, Incorporated Method for predicting loudspeaker port performance and optimizing loudspeaker port designs utilizing bi-directional fluid flow principles
WO2007034344A2 (en) * 2005-09-20 2007-03-29 Koninklijke Philips Electronics N.V. Band- pass transducer system with long port
KR20100091185A (ko) * 2007-10-22 2010-08-18 데이비드 마에시바 음향 시스템
US8744108B2 (en) 2011-07-12 2014-06-03 Strata Audio LLC Balanced momentum inertial duct
GB2577569B (en) * 2018-09-29 2022-06-15 Barefaced Ltd Loudspeaker enclosure with slot/horn apparatus for improved polar response and low frequency output

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5435704Y2 (en]) * 1976-01-19 1979-10-30
NL184037C (nl) * 1977-09-15 1989-03-16 Novanex Automation Nv Luidsprekerstelsel.
US4276443A (en) * 1979-08-17 1981-06-30 Meyers Stanley T Sound reproducing system utilizing motional feedback and velocity-frequency equalization

Also Published As

Publication number Publication date
US4987601A (en) 1991-01-22
JPH0226890U (en]) 1990-02-21

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees