EP2208197A2 - Masquage sonore - Google Patents

Masquage sonore

Info

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Withdrawn
Application number
EP08843386A
Other languages
German (de)
English (en)
Inventor
Frank Zickmantel
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.)
SilenceResearch GmbH
Original Assignee
SilenceResearch GmbH
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 SilenceResearch GmbH filed Critical SilenceResearch GmbH
Publication of EP2208197A2 publication Critical patent/EP2208197A2/fr
Withdrawn legal-status Critical Current

Links

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

L'invention concerne un procédé de masquage sonore, un dispositif de commande et un système de masquage pour la mise en oeuvre du procédé. Selon l'invention, plusieurs zones d'une pièce sont sonorisées à l'état initial de façon indépendamment silencieuse à des fins de masquage. Le système de masquage comporte à cet effet des éléments destinés à sonoriser des zones d'une pièce de façon indépendante. Le système de masquage comporte par ailleurs des éléments destinés à enregistrer et, de préférence, à analyser un bruit produit dans une zone. En fonction de la mesure sonore ou de l'enregistrement sonore, et éventuellement en fonction du résultat de l'analyse du bruit externe mesuré, la sonorisation masquante de la zone dans laquelle le bruit externe a été produit, est réduite, et/ou la sonorisation masquante des autres zones est amplifiée. L'invention permet de maintenir l'intensité sonore du bruit masquant à un faible niveau par rapport à l'état antérieur de la technique, et d'obtenir toutefois un masquage ciblé fiable.
EP08843386A 2007-10-31 2008-10-30 Masquage sonore Withdrawn EP2208197A2 (fr)

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 (fr) 2007-10-31 2008-10-30 Masquage sonore

Publications (1)

Publication Number Publication Date
EP2208197A2 true EP2208197A2 (fr) 2010-07-21

Family

ID=40514121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08843386A Withdrawn EP2208197A2 (fr) 2007-10-31 2008-10-30 Masquage sonore

Country Status (4)

Country Link
US (1) US8761411B2 (fr)
EP (1) EP2208197A2 (fr)
DE (1) DE102007000608A1 (fr)
WO (1) WO2009056585A2 (fr)

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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
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
EP4089373A1 (fr) 2013-07-12 2022-11-16 John C. Karamanos Dispositif de mesure de régulation de fluide
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
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 (fr) 2015-01-02 2022-07-13 Harman Becker Automotive Systems GmbH Agencement de zone acoustique avec suppression vocale par zone
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
US9596539B1 (en) 2015-09-16 2017-03-14 Nightingale Smart Solutions, Inc. Wireless sound-emitting device and system for remotely controlling a sound-emitting device
US9922635B2 (en) * 2016-03-30 2018-03-20 Lenovo (Singapore) Pte. Ltd. Minimizing nuisance audio in an interior space
EP3459075A4 (fr) 2016-05-20 2019-08-28 Cambridge Sound Management, Inc. Haut-parleur auto-alimenté pour masquage sonore
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
WO2021020823A2 (fr) * 2019-07-31 2021-02-04 구본희 Dispositif et procédé réduction de bruit
JP7716720B2 (ja) * 2021-04-26 2025-08-01 パナソニックＩｐマネジメント株式会社 音声制御システム、音声制御方法、及び、プログラム

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Also Published As

Publication number Publication date
WO2009056585A3 (fr) 2010-10-14
US20110002477A1 (en) 2011-01-06
DE102007000608A1 (de) 2009-05-07
WO2009056585A2 (fr) 2009-05-07
US8761411B2 (en) 2014-06-24

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