CA1299725C - Systeme d'insonorisation - Google Patents
Systeme d'insonorisationInfo
- Publication number
- CA1299725C CA1299725C CA000572420A CA572420A CA1299725C CA 1299725 C CA1299725 C CA 1299725C CA 000572420 A CA000572420 A CA 000572420A CA 572420 A CA572420 A CA 572420A CA 1299725 C CA1299725 C CA 1299725C
- Authority
- CA
- Canada
- Prior art keywords
- filter
- feedback loop
- filter means
- microphone
- gain
- 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 - Lifetime
Links
- 230000009467 reduction Effects 0.000 title claims abstract description 13
- 230000010363 phase shift Effects 0.000 claims abstract description 21
- 238000012546 transfer Methods 0.000 claims abstract description 12
- 235000021170 buffet Nutrition 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims description 12
- 230000006641 stabilisation Effects 0.000 claims description 12
- 238000011105 stabilization Methods 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 229910004676 OOOHz Inorganic materials 0.000 description 3
- 230000005534 acoustic noise Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 101100460844 Mus musculus Nr2f6 gene Proteins 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 102100021709 Rho guanine nucleotide exchange factor 4 Human genes 0.000 description 1
- 101710128386 Rho guanine nucleotide exchange factor 4 Proteins 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001364 causal effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17853—Methods, e.g. algorithms; Devices of the filter
-
- 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
- G10K11/1781—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 characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
- G10K11/17821—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 characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
- G10K11/17825—Error signals
-
- 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
- G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback
-
- 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
- G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
-
- 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
- G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
- G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
-
- 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
- G10K2210/301—Computational
- G10K2210/3028—Filtering, e.g. Kalman filters or special analogue or digital filters
-
- 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
- G10K2210/301—Computational
- G10K2210/3039—Nonlinear, e.g. clipping, numerical truncation, thresholding or variable input and output gain
-
- 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
- G10K2210/301—Computational
- G10K2210/3045—Multiple acoustic inputs, single acoustic output
Landscapes
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Electroluminescent Light Sources (AREA)
- Gas-Filled Discharge Tubes (AREA)
- Networks Using Active Elements (AREA)
- Exhaust Silencers (AREA)
- Noise Elimination (AREA)
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB878717040A GB8717040D0 (en) | 1987-07-20 | 1987-07-20 | Noise reduction systems |
| GB878717042A GB8717042D0 (en) | 1987-07-20 | 1987-07-20 | Noise reduction systems |
| GB8717042 | 1987-07-20 | ||
| GB878717043A GB8717043D0 (en) | 1987-07-20 | 1987-07-20 | Noise reduction systems |
| GB8717040 | 1987-07-20 | ||
| GB8717043 | 1987-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1299725C true CA1299725C (fr) | 1992-04-28 |
Family
ID=27263515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000572420A Expired - Lifetime CA1299725C (fr) | 1987-07-20 | 1988-07-19 | Systeme d'insonorisation |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0327617B1 (fr) |
| AT (1) | ATE82083T1 (fr) |
| AU (1) | AU608041B2 (fr) |
| CA (1) | CA1299725C (fr) |
| DE (1) | DE3875717T2 (fr) |
| WO (1) | WO1989000746A1 (fr) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5091954A (en) * | 1989-03-01 | 1992-02-25 | Sony Corporation | Noise reducing receiver device |
| US5276740A (en) * | 1990-01-19 | 1994-01-04 | Sony Corporation | Earphone device |
| DE69113333T2 (de) * | 1990-01-19 | 1996-03-07 | Sony Corp | Ohrstückvorrichtung. |
| US5224168A (en) * | 1991-05-08 | 1993-06-29 | Sri International | Method and apparatus for the active reduction of compression waves |
| WO1994017513A1 (fr) * | 1993-01-29 | 1994-08-04 | Active Noise And Vibration Technologies, Inc. | Ecouteur pour casque a suppression active de bruit |
| AU7355594A (en) * | 1993-06-23 | 1995-01-17 | Noise Cancellation Technologies, Inc. | Variable gain active noise cancellation system with improved residual noise sensing |
| AT403417B (de) * | 1995-04-25 | 1998-02-25 | Fritz Dr Paschke | Schallfiltervorrichtung |
| US5675658A (en) * | 1995-07-27 | 1997-10-07 | Brittain; Thomas Paige | Active noise reduction headset |
| US20010036283A1 (en) * | 2000-03-07 | 2001-11-01 | Mark Donaldson | Active noise reduction system |
| US8077874B2 (en) | 2006-04-24 | 2011-12-13 | Bose Corporation | Active noise reduction microphone placing |
| US8054992B2 (en) | 2006-04-24 | 2011-11-08 | Bose Corporation | High frequency compensating |
| DE102009005302B4 (de) | 2009-01-16 | 2022-01-05 | Sennheiser Electronic Gmbh & Co. Kg | Schutzhelm und Vorrichtung zur aktiven Störschallunterdrückung |
| US8345888B2 (en) * | 2009-04-28 | 2013-01-01 | Bose Corporation | Digital high frequency phase compensation |
| US8085946B2 (en) | 2009-04-28 | 2011-12-27 | Bose Corporation | ANR analysis side-chain data support |
| US8553900B2 (en) * | 2010-05-14 | 2013-10-08 | Creative Technology Ltd | Noise reduction circuit with monitoring functionality |
| US11164554B2 (en) * | 2020-03-06 | 2021-11-02 | Bose Corporation | Wearable active noise reduction (ANR) device having low frequency feedback loop modulation |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4061875A (en) * | 1977-02-22 | 1977-12-06 | Stephen Freifeld | Audio processor for use in high noise environments |
| AU550700B2 (en) * | 1981-06-12 | 1986-03-27 | Chaplin Patents Holding Co. Ltd | Method and apparatus for reducing repetitive noise entering the ear |
| ZA825676B (en) * | 1981-08-11 | 1983-06-29 | Sound Attenuators Ltd | Method and apparatus for low frequency active attennuation |
| DE3133107A1 (de) * | 1981-08-21 | 1983-03-10 | Michael 5440 Mayen Hofmann | Persoenlicher schallschutz |
| GB2172769B (en) * | 1985-03-21 | 1988-07-06 | Topexpress Ltd | Improvements in acoustic attenuation |
| GB8517716D0 (en) * | 1985-07-13 | 1985-08-21 | Plessey Co Plc | Noise reduction arrangements |
-
1988
- 1988-07-19 CA CA000572420A patent/CA1299725C/fr not_active Expired - Lifetime
- 1988-07-20 AT AT88905991T patent/ATE82083T1/de not_active IP Right Cessation
- 1988-07-20 AU AU20716/88A patent/AU608041B2/en not_active Ceased
- 1988-07-20 EP EP88905991A patent/EP0327617B1/fr not_active Expired - Lifetime
- 1988-07-20 WO PCT/GB1988/000581 patent/WO1989000746A1/fr active IP Right Grant
- 1988-07-20 DE DE8888905991T patent/DE3875717T2/de not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ATE82083T1 (de) | 1992-11-15 |
| EP0327617A1 (fr) | 1989-08-16 |
| DE3875717T2 (de) | 1993-03-18 |
| WO1989000746A1 (fr) | 1989-01-26 |
| EP0327617B1 (fr) | 1992-11-04 |
| AU608041B2 (en) | 1991-03-21 |
| DE3875717D1 (de) | 1992-12-10 |
| AU2071688A (en) | 1989-02-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |