GB2204916B - A silencer - Google Patents

A silencer

Info

Publication number
GB2204916B
GB2204916B GB8711767A GB8711767A GB2204916B GB 2204916 B GB2204916 B GB 2204916B GB 8711767 A GB8711767 A GB 8711767A GB 8711767 A GB8711767 A GB 8711767A GB 2204916 B GB2204916 B GB 2204916B
Authority
GB
United Kingdom
Prior art keywords
silencer
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
GB8711767A
Other versions
GB8711767D0 (en
GB2204916A (en
Inventor
Colin David Lyle
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 Gas PLC
Original Assignee
British Gas PLC
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 Gas PLC filed Critical British Gas PLC
Priority to GB8711767A priority Critical patent/GB2204916B/en
Publication of GB8711767D0 publication Critical patent/GB8711767D0/en
Publication of GB2204916A publication Critical patent/GB2204916A/en
Application granted granted Critical
Publication of GB2204916B publication Critical patent/GB2204916B/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
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • 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
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • 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
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17861—Methods, e.g. algorithms; Devices using additional means for damping sound, e.g. using sound absorbing panels
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/107—Combustion, e.g. burner noise control of jet engines
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/121—Rotating machines, e.g. engines, turbines, motors; Periodic or quasi-periodic signals in general
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3212—Actuator details, e.g. composition or microstructure
    • G10K2210/32121—Fluid amplifiers, e.g. modulated gas flow speaker using electrovalves
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3214—Architectures, e.g. special constructional features or arrangements of features
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/50—Miscellaneous
    • G10K2210/509—Hybrid, i.e. combining different technologies, e.g. passive and active

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Exhaust Silencers (AREA)
GB8711767A 1987-05-19 1987-05-19 A silencer Expired - Fee Related GB2204916B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8711767A GB2204916B (en) 1987-05-19 1987-05-19 A silencer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8711767A GB2204916B (en) 1987-05-19 1987-05-19 A silencer

Publications (3)

Publication Number Publication Date
GB8711767D0 GB8711767D0 (en) 1987-06-24
GB2204916A GB2204916A (en) 1988-11-23
GB2204916B true GB2204916B (en) 1991-10-16

Family

ID=10617558

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8711767A Expired - Fee Related GB2204916B (en) 1987-05-19 1987-05-19 A silencer

Country Status (1)

Country Link
GB (1) GB2204916B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991015666A1 (en) * 1990-04-09 1991-10-17 Active Noise And Vibration Technologies, Inc. Single cavity automobile muffler
DE4027511C1 (en) * 1990-08-30 1991-10-02 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V., 8000 Muenchen, De
KR930007959B1 (en) * 1990-12-19 1993-08-25 주식회사 금성사 Apparatus and method for reducing noise-pollusion of air conditioner
ATE179273T1 (en) * 1991-12-02 1999-05-15 Noise Cancellation Tech ACTIVE NOISE REDUCTION IN A HOUSING USING A VARIETY OF TRANSDUCERS
US5386689A (en) * 1992-10-13 1995-02-07 Noises Off, Inc. Active gas turbine (jet) engine noise suppression
US5494151A (en) * 1993-08-06 1996-02-27 Shinko Electric Co., Ltd. Vibratory parts-feeder apparatus
CH704823A1 (en) 2011-04-01 2012-10-15 Alstom Technology Ltd Intake manifold for a gas turbine and gas turbine.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685611A (en) * 1971-03-24 1972-08-22 Rohr Corp Duct with lining of spaced bands for suppressing sound in a gas steam transmitted therethrough
GB1357330A (en) * 1970-07-01 1974-06-19 Secr Defence Dynamic silencing systems
GB1456018A (en) * 1972-11-24 1976-11-17 Nat Res Dev Active control of sound waves
GB2142091A (en) * 1983-06-23 1985-01-09 Nat Res Dev Attenuation of sound waves

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1357330A (en) * 1970-07-01 1974-06-19 Secr Defence Dynamic silencing systems
US3685611A (en) * 1971-03-24 1972-08-22 Rohr Corp Duct with lining of spaced bands for suppressing sound in a gas steam transmitted therethrough
GB1456018A (en) * 1972-11-24 1976-11-17 Nat Res Dev Active control of sound waves
GB2142091A (en) * 1983-06-23 1985-01-09 Nat Res Dev Attenuation of sound waves

Also Published As

Publication number Publication date
GB8711767D0 (en) 1987-06-24
GB2204916A (en) 1988-11-23

Similar Documents

Publication Publication Date Title
GB2204916B (en) A silencer
CS37587A1 (en) Zmesny termicky a termooxidacny stabilizator a sposob jeho pripravy
CS37687A1 (en) Zmesny termicky a termooxidacny stabilizator a sposob jeho pripravy
ZA876859B (en) A silencer
SU1543104A1 (en) Muffler
CS339787A1 (en) Piperazidy methoxyfenoxyoctovych kyselin a jejich hydrochloridy
CS653787A1 (en) Estery indomethacinu a zpusob jejich vyroby
CS799887A1 (en) Zpusob regenerace slevarenskych formovacich a jadrovych smesi
GB2203933B (en) A mini-dishwasher
GB8717119D0 (en) Silencer
GB8714592D0 (en) Silencer
CS179887A1 (en) Zpusob pripravy esteru kyseliny akrylove a metakrylove
CS145987A1 (en) Zpusob reformovani smesi tezkych alkanickych a cyklanickych benzinu
CS180987A1 (en) Obvod rizeni a regulace
AU100156S (en) A rainhead
CS188187A1 (en) Zpusob suspenzni polymerace a nebo kopolymerace vinylchloridu
CS21687A1 (en) Zpusob dlouzeni a stabilizace nekonecnych pasovych utvaru
CS229087A1 (en) Vakuove tvarovane a lehcenou penovou hmotou vyplnene sedadlo a operadlo
CS270987A1 (en) Zpusob vyroby vysoce lehcenych desek a tvarovek
CS308187A1 (en) Zapojeni rozvodu topneho oleje mezi transportni cisternou a kotelnim horakem
CS32687A1 (en) Zapojeni mericich a propojovacich objektu katodicke ochrany
AU100033S (en) A photostand
CS356387A1 (en) Zpusob selektivni hydrogenace konjugovanych dienu a vinylaromatickych uhlovodiku
AU102869S (en) A gamesboard
CS612987A1 (en) Hydraulicke zapojenie integrovaneho obvodu brzd a startovanie zavesnej lokomotivy

Legal Events

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

Effective date: 19990519