EP2208197A2 - Maskierung für schall - Google Patents
Maskierung für schallInfo
- Publication number
- EP2208197A2 EP2208197A2 EP08843386A EP08843386A EP2208197A2 EP 2208197 A2 EP2208197 A2 EP 2208197A2 EP 08843386 A EP08843386 A EP 08843386A EP 08843386 A EP08843386 A EP 08843386A EP 2208197 A2 EP2208197 A2 EP 2208197A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sound
- masking
- volume
- generated
- area
- 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- Withdrawn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
- 230000000873 masking effect Effects 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000005283 ground state Effects 0.000 claims description 14
- 238000004458 analytical method Methods 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract 4
- 230000000694 effects Effects 0.000 description 9
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000003931 cognitive performance Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 241000282412 Homo Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
- H04K3/825—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming
-
- 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
- G10K11/1752—Masking
- G10K11/1754—Speech masking
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/43—Jamming having variable characteristics characterized by the control of the jamming power, signal-to-noise ratio or geographic coverage area
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/45—Jamming having variable characteristics characterized by including monitoring of the target or target signal, e.g. in reactive jammers or follower jammers for example by means of an alternation of jamming phases and monitoring phases, called "look-through mode"
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K2203/00—Jamming of communication; Countermeasures
- H04K2203/10—Jamming or countermeasure used for a particular application
- H04K2203/12—Jamming or countermeasure used for a particular application for acoustic communication
Definitions
- the invention relates to a method for the masking of sound, a control device and a masking system for carrying out the method.
- This sound masking system also has the disadvantage that with the generation of the masking sound, a person will automatically speak louder. It is therefore disadvantageously necessary to generate relatively loud masking sound in order to produce the desired masking effect.
- the masking system therefore comprises means for independently sounding areas in a room.
- a dedicated loudspeaker designed to direct the sound emanating from the loudspeaker into the area to be masked.
- this masking sound is called "masking sound”.
- the masking system further comprises means with which sound generated in a region can be registered and preferably also analyzed.
- the masking system therefore comprises a plurality of microphones, with the aid of which an external sound source can be located.
- the masking sound of the area where the external sound has been generated is reduced and / or the masking sound of the other areas is amplified.
- the masking system thus changes from the basic state to another operating state.
- the volume of the masking sound of the area where external sound was generated can be reduced to zero.
- reduction thus also includes the complete switching off of the masking sound or the blasting sound.
- the reduction as well as the amplification of the volumes of masking sound are basically time-limited.This can be done by measuring the external sound after a predetermined, If no external sound has been measured or registered again, this can be done by the masking system determining that external sound has ceased to be generated, in particular within a predetermined time period, and returns to the ground state in this case.
- the masking sound of the remaining areas can be relatively quiet and especially quieter compared to the known from the publications EP 0376482 A2 and EP 1 291 845 A2 state of Tec hnik. Will be in the other areas in which no external sound was generated, the volume only raised when needed, ie in response to external sound, so in the ground state of the permanently existing masking sound can be set very quiet. If, in the ground state, the masking sound is already set relatively quietly, a person does not have to speak so loud from the beginning in comparison to the prior art known from the publications EP 0 376 482 A2 and EP 1 291 845 A2 in order to avoid the masking sound that is present to drown out.
- the volume with which the other areas are sonicated by the masking system must not be raised in principle to the volume level required in the prior art known from the documents EP 0 376 482 A2 and EP 1 291 845 A2 in order to obtain a to achieve desired masking effect.
- the masking system according to the invention it is thus possible, in the ground state, to illuminate the areas of interest in a room in a comparatively quiet masking manner. As soon as a noise occurs, which is to be masked, the desired masking effect can be achieved regularly with volumes that are below the levels required by the prior art.
- the masking system according to the invention also masks external sound so that working people are not disturbed by permanently present, relatively loud masking sound or by switching between relatively loud masking sound and no masking sound present. Further, a human being is not caused to want to drown out the masking sound so that the desired masking effects can be insufficiently achieved.
- the speech recognition device is such that it can detect whether external sound is generated by human speech or otherwise. Only in the case of the recognition of human speech by the masking system is in this embodiment of the
- the masking system then includes, for example, microphones aligned with the individual areas. Only when a predetermined volume threshold stored in the masking system is exceeded by external sound and, preferably, only at Exceeding a predetermined, stored in M ⁇ skimiessystem period, an existing operating state of the masking system is changed by the volume of the masking sound is reduced in this area and / or increased in other areas. As a rule, only human communication in the respective area will change an existing operating state of the masking system in such cases.
- Such limited areas are particularly present when in a room several workstations are set up, which are usually not left, so for example desks and associated chairs. Such areas are usually equipped with only one computer, just a telephone, just a desk and / or just a chair.
- the volume of an external sound source is analyzed. Depending on the determined volume, the volume of the masking sound is raised in those areas where no external sound has been generated. With increasing volume of external sound generated in one area, the volume of the masking sound in the corresponding other areas is increased, but in one embodiment, advantageously
- a control device of the masking system comprises a comparison device with which it is determined at which microphone an externally measured sound is registered the loudest. The area where this microphone is located is then used by the
- the masking system can be modular. Each module can be designed to cover the technical requirements for an area. The modules then preferably communicate with each other via radio. An existing masking system can then be easily extended if subsequently another area is to be included in a room. The individual modules can also be connected to each other alternatively or additionally by cable.
- the masking system can also be permanently installed.
- FIG. 1 shows a room 1 in which two workstations 2 and 3 are set up.
- the two workplaces are separated by a control or partition wall 4.
- Each workstation is a very limited, fixed predetermined area in a room in the sense of the present invention.
- Such a partition 4 usually shields noise is not sufficient. External sound, for example, by the am
- FIG. 1 illustrates the ground state. In both areas 2 and 3, only a very quiet masking noise 9 and 10 is recorded, which behaves inconspicuously.
- Masking noises 9 and 10 can, for example, reflect the splashing of water, which is regularly perceived by humans as pleasant. Preferably, changing masking noises 9 and 10 are recorded in order not to be distracting in the long term.
- the person 5 in the area 2 receives a telephone call and communicates.
- the ground state of the masking system is left by a connected to the microphone of the screen 1 2 computer then interrupts the feeding of the masking sound 9 and at the same time causes an increase in the volume of the masking sound 1 0 exiting the speaker 8.
- the extent to which the increase in the volume of the masking sound 1 0 for the adjacent area 3 fails depends on the communication volume of the person 5 in the area 2. As the volume of the masking sound has been reduced for the area 2, the person 5 usually communicates more quietly, so that the raising of the masking noise in the area 3 will be small. This effect is based on the reversal of the Lombard effect. By a quieter environment is also spoken quieter.
- the volume of the masking sound is lowered only slightly in time, or if the masking sound is completely switched off, the speaking person feels instinctively observed, which in addition causes quieter speech. Just a time delay thus also contributes to the desired effect.
- the masking sound is then completely switched off in order to maximize this effect.
- FIG. 3 clarifies the situation.
- the person 6 now also telephones in the area 3.
- a microphone integrated in the screen 1 3 registers the speech of the person 6.
- a computer connected to the microphone thus receives the information that in both areas 2 and 3 external sound is generated and now turns off the second masking sound 1 0.
- the sound level generated by each communication is usually sufficient to mask the external noise from the adjacent area. In addition, it is difficult to get to concentrate on neighboring sources of information in their own communication.
- the masking system is preferably set so that masking sound 9 and 10 never or at least in the case of the situation shown in Figure 3 is not completely switched off, but instead the volume in the area (s) compared to Basic state is only slightly lowered, is generated in the external sound.
- a certain amount of time can then also be specified while the external sound must occur before changing from one operating state to another. In this way, it is achieved that, as a rule, only speaking of persons 5 and 6 can bring about a change in the state of the masking system.
- this length of time is at least two seconds. If one or both persons 5 and 6 terminate their telephone calls, the masking system returns to the respective previous operating state, for example to the basic state, when both persons have stopped speaking. It is expedient here to first switch back from one operating state to the other when pauses in speech are so long that a certain length of time is exceeded.
- Figure 4 illustrates a typical room acoustic problem and that the Lombard effect. High base levels lead to poor speech intelligibility and self-control. The sound levels are getting bigger by speaking louder.
- Figure 5 shows the results of studies on noise in the school environment and cognitive performance of primary school children, which were carried out by the University of Oldenburg and the Democratic University of Eichstafft Ingolstadt.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007000608A DE102007000608A1 (de) | 2007-10-31 | 2007-10-31 | Maskierung für Schall |
| PCT/EP2008/064705 WO2009056585A2 (de) | 2007-10-31 | 2008-10-30 | Maskierung für schall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2208197A2 true EP2208197A2 (de) | 2010-07-21 |
Family
ID=40514121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08843386A Withdrawn EP2208197A2 (de) | 2007-10-31 | 2008-10-30 | Maskierung für schall |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8761411B2 (de) |
| EP (1) | EP2208197A2 (de) |
| DE (1) | DE102007000608A1 (de) |
| WO (1) | WO2009056585A2 (de) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2011106029A (ru) * | 2008-07-18 | 2012-08-27 | Конинклейке Филипс Электроникс Н.В. (Nl) | Способ и система препятствования подслушиванию частных разговоров в общественных местах |
| DE102013007481B4 (de) * | 2013-04-29 | 2014-12-04 | DELUXE MCB UG (haftungsbeschränkt) | Vorrichtung zur Schallreduzierung in Gasträumen |
| US9536514B2 (en) * | 2013-05-09 | 2017-01-03 | Sound Barrier, LLC | Hunting noise masking systems and methods |
| US11815923B2 (en) | 2013-07-12 | 2023-11-14 | Best Technologies, Inc. | Fluid flow device with discrete point calibration flow rate-based remote calibration system and method |
| WO2015006777A2 (en) | 2013-07-12 | 2015-01-15 | Karamanos John C | Fluid control measuring device |
| US10030882B2 (en) * | 2013-07-12 | 2018-07-24 | Best Technologies, Inc. | Low flow fluid controller apparatus and system |
| US11429121B2 (en) | 2013-07-12 | 2022-08-30 | Best Technologies, Inc. | Fluid flow device with sparse data surface-fit-based remote calibration system and method |
| US9445190B2 (en) * | 2013-12-20 | 2016-09-13 | Plantronics, Inc. | Masking open space noise using sound and corresponding visual |
| DE102014107616B4 (de) * | 2014-05-29 | 2021-01-07 | Gerhard Danner | System und Verfahren zur Minderung der Sprachverständlichkeit |
| US9800220B2 (en) * | 2014-09-24 | 2017-10-24 | Intel Corporation | Audio system with noise interference mitigation |
| EP3040984B1 (de) * | 2015-01-02 | 2022-07-13 | Harman Becker Automotive Systems GmbH | Schallzonenanordnung mit zonenweiser sprachunterdrückung |
| JP2016177204A (ja) * | 2015-03-20 | 2016-10-06 | ヤマハ株式会社 | サウンドマスキング装置 |
| WO2017048312A1 (en) | 2015-09-16 | 2017-03-23 | Cambridge Sound Management, Inc. | Wireless sound-emitting device and system for remotely controlling a wireless sound-emitting device |
| US9922635B2 (en) * | 2016-03-30 | 2018-03-20 | Lenovo (Singapore) Pte. Ltd. | Minimizing nuisance audio in an interior space |
| CN109313887B (zh) | 2016-05-20 | 2023-09-15 | 剑桥声音管理公司 | 用于声音掩蔽的自供电扬声器 |
| US11120821B2 (en) | 2016-08-08 | 2021-09-14 | Plantronics, Inc. | Vowel sensing voice activity detector |
| US10152959B2 (en) | 2016-11-30 | 2018-12-11 | Plantronics, Inc. | Locality based noise masking |
| US10074356B1 (en) | 2017-03-09 | 2018-09-11 | Plantronics, Inc. | Centralized control of multiple active noise cancellation devices |
| US10142762B1 (en) | 2017-06-06 | 2018-11-27 | Plantronics, Inc. | Intelligent dynamic soundscape adaptation |
| CN109429147B (zh) * | 2017-08-30 | 2021-01-05 | 美商富迪科技股份有限公司 | 电子装置与电子装置的控制方法 |
| JP2022543404A (ja) * | 2019-07-31 | 2022-10-12 | グ,ボン-ヒ | 騒音除去装置および方法 |
| EP4333460A4 (de) * | 2021-04-26 | 2025-01-22 | Panasonic Intellectual Property Management Co., Ltd. | Audiosteuerungssystem, audiosteuerungsverfahren und programm |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3213199A (en) | 1962-01-02 | 1965-10-19 | Bissett Berman Corp | System for masking information |
| US4052564A (en) * | 1975-09-19 | 1977-10-04 | Herman Miller, Inc. | Masking sound generator |
| US4438526A (en) * | 1982-04-26 | 1984-03-20 | Conwed Corporation | Automatic volume and frequency controlled sound masking system |
| US4914706A (en) | 1988-12-29 | 1990-04-03 | 777388 Ontario Limited | Masking sound device |
| AU3078099A (en) * | 1998-03-11 | 1999-09-27 | Acentech, Inc. | Personal sound masking system |
| US8477958B2 (en) * | 2001-02-26 | 2013-07-02 | 777388 Ontario Limited | Networked sound masking system |
| US20030048910A1 (en) | 2001-09-10 | 2003-03-13 | Roy Kenneth P. | Sound masking system |
| US7194094B2 (en) * | 2001-10-24 | 2007-03-20 | Acentech, Inc. | Sound masking system |
| US20030103632A1 (en) * | 2001-12-03 | 2003-06-05 | Rafik Goubran | Adaptive sound masking system and method |
| US7376557B2 (en) | 2005-01-10 | 2008-05-20 | Herman Miller, Inc. | Method and apparatus of overlapping and summing speech for an output that disrupts speech |
| US8107639B2 (en) * | 2006-06-29 | 2012-01-31 | 777388 Ontario Limited | System and method for a sound masking system for networked workstations or offices |
| WO2008074127A1 (en) | 2006-12-18 | 2008-06-26 | Soft Db Inc. | Sound volume automatic adjustment method and system |
| DE102007000568A1 (de) | 2007-10-24 | 2009-04-30 | Silencesolutions Gmbh | Schallabsorber |
-
2007
- 2007-10-31 DE DE102007000608A patent/DE102007000608A1/de not_active Withdrawn
-
2008
- 2008-10-30 EP EP08843386A patent/EP2208197A2/de not_active Withdrawn
- 2008-10-30 US US12/740,453 patent/US8761411B2/en not_active Expired - Fee Related
- 2008-10-30 WO PCT/EP2008/064705 patent/WO2009056585A2/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009056585A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US8761411B2 (en) | 2014-06-24 |
| WO2009056585A2 (de) | 2009-05-07 |
| US20110002477A1 (en) | 2011-01-06 |
| WO2009056585A3 (de) | 2010-10-14 |
| DE102007000608A1 (de) | 2009-05-07 |
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