GB2387522B - Tunable active sound absorbers - Google Patents

Tunable active sound absorbers

Info

Publication number
GB2387522B
GB2387522B GB0208199A GB0208199A GB2387522B GB 2387522 B GB2387522 B GB 2387522B GB 0208199 A GB0208199 A GB 0208199A GB 0208199 A GB0208199 A GB 0208199A GB 2387522 B GB2387522 B GB 2387522B
Authority
GB
United Kingdom
Prior art keywords
active sound
sound absorbers
tunable active
tunable
absorbers
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
GB0208199A
Other versions
GB0208199D0 (en
GB2387522A (en
Inventor
Maximilian Hans Hobelsberger
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.)
Max Hobelsberger
Original Assignee
Max Hobelsberger
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 Max Hobelsberger filed Critical Max Hobelsberger
Priority to GB0208199A priority Critical patent/GB2387522B/en
Publication of GB0208199D0 publication Critical patent/GB0208199D0/en
Publication of GB2387522A publication Critical patent/GB2387522A/en
Application granted granted Critical
Publication of GB2387522B publication Critical patent/GB2387522B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
GB0208199A 2002-04-10 2002-04-10 Tunable active sound absorbers Expired - Fee Related GB2387522B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0208199A GB2387522B (en) 2002-04-10 2002-04-10 Tunable active sound absorbers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0208199A GB2387522B (en) 2002-04-10 2002-04-10 Tunable active sound absorbers

Publications (3)

Publication Number Publication Date
GB0208199D0 GB0208199D0 (en) 2002-05-22
GB2387522A GB2387522A (en) 2003-10-15
GB2387522B true GB2387522B (en) 2005-09-28

Family

ID=9934544

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0208199A Expired - Fee Related GB2387522B (en) 2002-04-10 2002-04-10 Tunable active sound absorbers

Country Status (1)

Country Link
GB (1) GB2387522B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004021546A1 (en) * 2004-05-03 2005-12-08 Avantgarde Acoustic Lautsprechersysteme Gmbh Electroacoustic transducer for loudspeaker with horn incorporates amplifier with negative output impedance and has power amplifier with negative feedback via resistor
US8752394B2 (en) * 2010-03-15 2014-06-17 Rolls-Royce Corporation Determining fan parameters through pressure monitoring
CN102664002B (en) * 2012-05-21 2014-10-22 河南科技大学 Active noise attenuation system and sound absorption method on basis of minimum quadratic sum of reflecting acoustic pressure
CN113630686A (en) * 2021-08-13 2021-11-09 南京工程学院 High-strength Helmholtz sound source design method based on pattern recognition

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993021625A1 (en) * 1988-03-14 1993-10-28 Hersh Alan S Extended frequency range helmholtz resonators
EP0586831A2 (en) * 1992-08-13 1994-03-16 Bayerische Motoren Werke Aktiengesellschaft Sound absorption method for motor vehicles
EP0824255A2 (en) * 1996-08-15 1998-02-18 Mitsubishi Jukogyo Kabushiki Kaisha Active acoustic wall
US5812686A (en) * 1992-03-24 1998-09-22 Hobelsberger; Maximilian Hans Device for active simultation of an acoustical impedance
WO2000036589A1 (en) * 1998-12-15 2000-06-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Controlled acoustic waveguide for soundproofing
EP1085201A2 (en) * 1999-09-16 2001-03-21 Siemens Canada limited Tuned active helmholtz resonator with forced response

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993021625A1 (en) * 1988-03-14 1993-10-28 Hersh Alan S Extended frequency range helmholtz resonators
US5812686A (en) * 1992-03-24 1998-09-22 Hobelsberger; Maximilian Hans Device for active simultation of an acoustical impedance
EP0586831A2 (en) * 1992-08-13 1994-03-16 Bayerische Motoren Werke Aktiengesellschaft Sound absorption method for motor vehicles
EP0824255A2 (en) * 1996-08-15 1998-02-18 Mitsubishi Jukogyo Kabushiki Kaisha Active acoustic wall
WO2000036589A1 (en) * 1998-12-15 2000-06-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Controlled acoustic waveguide for soundproofing
EP1085201A2 (en) * 1999-09-16 2001-03-21 Siemens Canada limited Tuned active helmholtz resonator with forced response

Also Published As

Publication number Publication date
GB0208199D0 (en) 2002-05-22
GB2387522A (en) 2003-10-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110410