EP1215652A2 - Mehrkanal-Antischallanlage - Google Patents
Mehrkanal-Antischallanlage Download PDFInfo
- Publication number
- EP1215652A2 EP1215652A2 EP01129486A EP01129486A EP1215652A2 EP 1215652 A2 EP1215652 A2 EP 1215652A2 EP 01129486 A EP01129486 A EP 01129486A EP 01129486 A EP01129486 A EP 01129486A EP 1215652 A2 EP1215652 A2 EP 1215652A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- loudspeakers
- channel
- octagonal
- sound
- wall surfaces
- 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.)
- Withdrawn
Links
Images
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
- G10K11/17857—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
- G10K11/1787—General system configurations
- G10K11/17879—General system configurations using both a reference signal and an error signal
- G10K11/17881—General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
-
- 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
- G10K2210/112—Ducts
-
- 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
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3219—Geometry of the configuration
Definitions
- the invention relates to a multi-channel anti-noise system according to the preamble of the claim 1.
- Such an anti-noise system is known from WO 97/02560.
- the facility is in one round duct section installed and serves to dampen higher modes in round ducts.
- No solution is proposed for other geometric cross sections.
- speakers are difficult to mount on a round duct piece and the annoying The geometric shape does not prevent sound from spreading.
- the invention is based on the object of an anti-noise system for ducts and devices with any cross-section and shape, in which the Assembly of the speakers is simplified and with lower amplifier power for the speaker gets along.
- the loudspeakers Mount better on flat wall surfaces than on round ones.
- the Sound from a round to an octagonal channel is changed by the Wall impedance returns some of the energy of the higher modes back into the channel or device reflected. This will reduce the sound pressure levels that the anti-noise system too fight.
- the amplifier power for the speakers can thus be reduced.
- four pairs of speakers are on the planes Wall surfaces of the octagonal channel mounted.
- One to four reference microphones with connected to a controller absorb the sound.
- the controller controls and regulates the four Loudspeaker pairs that generate the anti-noise.
- the effectiveness of the anti-noise system is controlled by four control microphones.
- Figure 1 shows an octagonal channel piece 1, which is shown in a device 2 with not shown Sound source is installed. On the flat wall surfaces of the octagonal channel 1 speakers 3 are attached. On the side of the sound source, not shown, is a Reference microphone 4 arranged, which is connected to a controller 5. I'm not from that Sound source shown more distant section of the octagonal channel 1 are control microphones 6 provided, which are connected to the controller 5. The controller 5 controls and regulates the loudspeakers 3 via an amplifier 7.
- Figure 2 shows a section through the octagonal channel 1.
- speakers 3 are arranged on the flat wall surfaces of the octagonal channel 1 speakers 3 are arranged. Two speakers 3 are combined into a pair of loudspeakers and connected to the amplifier 7. The amplifier 7 is connected to the controller 5.
- control microphones 6 The arrangement of the control microphones 6 can be seen from FIG.
- the control microphones 6 are arranged in the first, third, fifth and seventh corner of the octagonal channel, respectively.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
Description
- Figur 1
- den schematischen Aufbau der Antischallanlage
- Figur 2
- die Anordnung der vier Lautsprecherpaare in dem achteckigen Kanal und
- Figur 3
- die Anordnung der Kontroll- und Regelmikrofone in dem achteckigen Kanal
- 1
- achteckiger Kanal
- 2
- Vorrichtung
- 3
- Lautsprecher
- 4
- Referenzmikrofon
- 5
- Regler
- 6
- Regelmikrofon
- 7
- Verstärker
Claims (3)
- Mehrkanal-Antischallanlage mit mindestens einem Referenzmikrofon (4) und Lautsprechern (3) sowie Regelmikrofone (6), die mit einem Regler (5) zur Steuerung und Regelung der Lautsprecher (3) zur Erzeugung von Antischall verbunden sind, dadurch gekennzeichnet, dass die Antischallanlage in einem achteckigen Kanal (1) eingebaut ist und die Lautsprecher (3) an den ebenen Wandflächen des Kanals (1) angeordnet sind..
- Mehrkanal-Antischallanlage nach Anspruch 1, dadurch gekennzeichnet, dass vier Lautsprecherpaare (3) an den ebenen Wandflächen des achteckigen Kanals (1) und vier Regelmikrofone (6) sowie mindestens ein Referenzmikrofon (4) vorgesehen sind.
- Mehrkanal-Antischallanlage nach Anspruch 1, dadurch gekennzeichnet, dass acht Lautsprecher (3), die an den ebenen Wandflächen des achteckigen Kanals (1) angeordnet sind, einzeln ansteuerbar ausgeführt sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10061760A DE10061760C1 (de) | 2000-12-12 | 2000-12-12 | Mehrkanal-Antischallanlage |
DE10061760 | 2000-12-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1215652A2 true EP1215652A2 (de) | 2002-06-19 |
EP1215652A3 EP1215652A3 (de) | 2005-05-04 |
Family
ID=7666755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01129486A Withdrawn EP1215652A3 (de) | 2000-12-12 | 2001-12-11 | Mehrkanal-Antischallanlage |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1215652A3 (de) |
DE (1) | DE10061760C1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0483921A1 (de) * | 1990-10-31 | 1992-05-06 | Matsushita Electric Works, Ltd. | Akustische Konduktanz in einem Leitungssystem |
JPH08272374A (ja) * | 1995-03-30 | 1996-10-18 | Daiken Trade & Ind Co Ltd | アクティブ消音装置 |
WO1997002560A1 (en) * | 1995-07-05 | 1997-01-23 | Alumax Inc. | Method and apparatus for active noise control of high order modes in ducts |
JPH10143169A (ja) * | 1996-11-14 | 1998-05-29 | Shinko Electric Co Ltd | 消音装置 |
EP0886262A2 (de) * | 1997-06-19 | 1998-12-23 | DORNIER GmbH | Verfahren zur Lärmminderung schallführender Medien in Rohrleitungen |
-
2000
- 2000-12-12 DE DE10061760A patent/DE10061760C1/de not_active Expired - Fee Related
-
2001
- 2001-12-11 EP EP01129486A patent/EP1215652A3/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0483921A1 (de) * | 1990-10-31 | 1992-05-06 | Matsushita Electric Works, Ltd. | Akustische Konduktanz in einem Leitungssystem |
JPH08272374A (ja) * | 1995-03-30 | 1996-10-18 | Daiken Trade & Ind Co Ltd | アクティブ消音装置 |
WO1997002560A1 (en) * | 1995-07-05 | 1997-01-23 | Alumax Inc. | Method and apparatus for active noise control of high order modes in ducts |
JPH10143169A (ja) * | 1996-11-14 | 1998-05-29 | Shinko Electric Co Ltd | 消音装置 |
EP0886262A2 (de) * | 1997-06-19 | 1998-12-23 | DORNIER GmbH | Verfahren zur Lärmminderung schallführender Medien in Rohrleitungen |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN Bd. 1997, Nr. 02, 28. Februar 1997 (1997-02-28) & JP 08 272374 A (DAIKEN TRADE & IND CO LTD), 18. Oktober 1996 (1996-10-18) * |
PATENT ABSTRACTS OF JAPAN Bd. 1998, Nr. 10, 31. August 1998 (1998-08-31) & JP 10 143169 A (SHINKO ELECTRIC CO LTD), 29. Mai 1998 (1998-05-29) * |
Also Published As
Publication number | Publication date |
---|---|
EP1215652A3 (de) | 2005-05-04 |
DE10061760C1 (de) | 2002-06-20 |
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