GB2470679B - Digital circuit arrangements for ambient noise-reduction - Google Patents
Digital circuit arrangements for ambient noise-reductionInfo
- Publication number
- GB2470679B GB2470679B GB1015100A GB201015100A GB2470679B GB 2470679 B GB2470679 B GB 2470679B GB 1015100 A GB1015100 A GB 1015100A GB 201015100 A GB201015100 A GB 201015100A GB 2470679 B GB2470679 B GB 2470679B
- Authority
- GB
- United Kingdom
- Prior art keywords
- reduction
- digital circuit
- ambient noise
- circuit arrangements
- arrangements
- 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.)
- Active
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
- G10K11/1785—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
-
- 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
- G10K11/17855—Methods, e.g. algorithms; Devices for improving speed or power requirements
-
- 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
- G10K11/1787—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
- G10K2210/3051—Sampling, e.g. variable rate, synchronous, decimated or interpolated
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1015100A GB2470679B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1015100A GB2470679B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
GB0920789A GB2465681B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
Publications (3)
Publication Number | Publication Date |
---|---|
GB201015100D0 GB201015100D0 (en) | 2010-10-27 |
GB2470679A GB2470679A (en) | 2010-12-01 |
GB2470679B true GB2470679B (en) | 2011-03-30 |
Family
ID=43037792
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1015106A Active GB2470682B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
GB1015105A Active GB2470681B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
GB1015100A Active GB2470679B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
GB1015103A Active GB2470680B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1015106A Active GB2470682B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
GB1015105A Active GB2470681B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1015103A Active GB2470680B (en) | 2006-04-12 | 2006-04-12 | Digital circuit arrangements for ambient noise-reduction |
Country Status (1)
Country | Link |
---|---|
GB (4) | GB2470682B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102640259B1 (en) * | 2018-02-27 | 2024-02-27 | 하만 베커 오토모티브 시스템즈 게엠베하 | Feedforward active noise control |
-
2006
- 2006-04-12 GB GB1015106A patent/GB2470682B/en active Active
- 2006-04-12 GB GB1015105A patent/GB2470681B/en active Active
- 2006-04-12 GB GB1015100A patent/GB2470679B/en active Active
- 2006-04-12 GB GB1015103A patent/GB2470680B/en active Active
Non-Patent Citations (2)
Title |
---|
Lin, L. and Aboulnasr, T., "Adaptive Signal Processing in Subbands Using Sigma-Delta Modulation Technique", IEEE International Conference of Acoustics, Speech and Signal Processing, 1994, Vol. 3, pp 169-172 * |
Minogue et al, "Adaptively Cancelling Server Fan Noise: Principles and Experiments with a Short Duct and the AD73522 dspConverter", Analog Dialogue magazine, 2000, Vol. 34, pp 10-15 * |
Also Published As
Publication number | Publication date |
---|---|
GB2470681A (en) | 2010-12-01 |
GB2470680A (en) | 2010-12-01 |
GB2470682A (en) | 2010-12-01 |
GB2470680B (en) | 2011-03-02 |
GB2470682B (en) | 2011-03-30 |
GB201015105D0 (en) | 2010-10-27 |
GB2470681B (en) | 2011-04-20 |
GB2470679A (en) | 2010-12-01 |
GB201015106D0 (en) | 2010-10-27 |
GB201015103D0 (en) | 2010-10-27 |
GB201015100D0 (en) | 2010-10-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20150820 AND 20150826 |