DK670489A - Maskerende lydkilde (baggrundsstoejkilde) - Google Patents

Maskerende lydkilde (baggrundsstoejkilde) Download PDF

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Publication number
DK670489A
DK670489A DK670489A DK670489A DK670489A DK 670489 A DK670489 A DK 670489A DK 670489 A DK670489 A DK 670489A DK 670489 A DK670489 A DK 670489A DK 670489 A DK670489 A DK 670489A
Authority
DK
Denmark
Prior art keywords
sound source
noise
sound
background noise
masking sound
Prior art date
Application number
DK670489A
Other languages
English (en)
Other versions
DK170675B1 (da
DK670489D0 (da
Inventor
Hans W Krause
Original Assignee
Ontario Ltd 777388
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 Ontario Ltd 777388 filed Critical Ontario Ltd 777388
Publication of DK670489D0 publication Critical patent/DK670489D0/da
Publication of DK670489A publication Critical patent/DK670489A/da
Application granted granted Critical
Publication of DK170675B1 publication Critical patent/DK170675B1/da

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/283—Intercom or optical viewing arrangements, structurally associated with NMR apparatus
    • 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
    • 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
    • H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
    • 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
    • H04K3/80—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Acoustics & Sound (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Road Signs Or Road Markings (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Golf Clubs (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Adornments (AREA)
DK670489A 1988-12-29 1989-12-28 Maskerende lydkilde (baggrundsstøjkilde) DK170675B1 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29037588 1988-12-29
US07/290,375 US4914706A (en) 1988-12-29 1988-12-29 Masking sound device

Publications (3)

Publication Number Publication Date
DK670489D0 DK670489D0 (da) 1989-12-28
DK670489A true DK670489A (da) 1990-06-30
DK170675B1 DK170675B1 (da) 1995-11-27

Family

ID=23115713

Family Applications (1)

Application Number Title Priority Date Filing Date
DK670489A DK170675B1 (da) 1988-12-29 1989-12-28 Maskerende lydkilde (baggrundsstøjkilde)

Country Status (8)

Country Link
US (1) US4914706A (da)
EP (1) EP0376482B1 (da)
AT (1) ATE127262T1 (da)
CA (1) CA1289081C (da)
DE (2) DE68924056T2 (da)
DK (1) DK170675B1 (da)
ES (1) ES2034922T3 (da)
GR (2) GR920300120T1 (da)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517525A3 (en) * 1991-06-06 1993-12-08 Matsushita Electric Ind Co Ltd Noise suppressor
US5781640A (en) * 1995-06-07 1998-07-14 Nicolino, Jr.; Sam J. Adaptive noise transformation system
US6888945B2 (en) 1998-03-11 2005-05-03 Acentech, Inc. Personal sound masking system
AU3078099A (en) * 1998-03-11 1999-09-27 Acentech, Inc. Personal sound masking system
US6329908B1 (en) 2000-06-23 2001-12-11 Armstrong World Industries, Inc. Addressable speaker system
US8477958B2 (en) 2001-02-26 2013-07-02 777388 Ontario Limited Networked sound masking system
US20030002692A1 (en) * 2001-05-31 2003-01-02 Mckitrick Mark A. Point sound masking system offering visual privacy
CA2464731C (en) * 2001-10-24 2009-02-10 Acentech, Inc. Sound masking system
US20030219133A1 (en) 2001-10-24 2003-11-27 Acentech, Inc. Sound masking system
US20030107478A1 (en) * 2001-12-06 2003-06-12 Hendricks Richard S. Architectural sound enhancement system
US20040125922A1 (en) * 2002-09-12 2004-07-01 Specht Jeffrey L. Communications device with sound masking system
US20050065778A1 (en) * 2003-09-24 2005-03-24 Mastrianni Steven J. Secure speech
DE102004008178A1 (de) * 2004-02-19 2005-09-01 Giesecke & Devrient Gmbh Verfahren zum Erzeugen von Zufallszahlen in einem tragbaren Datenträger
CA2471674A1 (en) 2004-06-21 2005-12-21 Soft Db Inc. Auto-adjusting sound masking system and method
US20080147394A1 (en) * 2006-12-18 2008-06-19 International Business Machines Corporation System and method for improving an interactive experience with a speech-enabled system through the use of artificially generated white noise
DE102007000608A1 (de) 2007-10-31 2009-05-07 Silencesolutions Gmbh Maskierung für Schall
US8666086B2 (en) 2008-06-06 2014-03-04 777388 Ontario Limited System and method for monitoring/controlling a sound masking system from an electronic floorplan
US8223985B2 (en) * 2009-04-22 2012-07-17 General Electric Company Masking of pure tones within sound from a noise generating source
US8804984B2 (en) 2011-04-18 2014-08-12 Microsoft Corporation Spectral shaping for audio mixing
US10657948B2 (en) 2015-04-24 2020-05-19 Rensselaer Polytechnic Institute Sound masking in open-plan spaces using natural sounds
EP3826324A1 (en) 2015-05-15 2021-05-26 Nureva Inc. System and method for embedding additional information in a sound mask noise signal
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
GB2562507B (en) 2017-05-17 2020-01-29 Jaguar Land Rover Ltd Apparatus and method for privacy enhancement
TWI678095B (zh) * 2018-06-26 2019-11-21 群光電子股份有限公司 聲音接收裝置及其雜音訊號產生之方法
CN110677772B (zh) * 2018-07-03 2020-12-25 群光电子股份有限公司 声音接收装置及其杂音信号产生的方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059726A (en) * 1974-11-29 1977-11-22 Bolt Beranek And Newman, Inc. Process and apparatus for speech privacy improvement through incoherent masking noise sound generation in open-plan office spaces and the like
US4010324A (en) * 1974-12-19 1977-03-01 Jarvis John P Background noisemasking system
US3980827A (en) * 1974-12-19 1976-09-14 Sepmeyer Ludwig W Diversity system for noise-masking
US4054751A (en) * 1976-03-01 1977-10-18 Cdf Industries, Inc. Masking noise generator
US4024535A (en) * 1976-06-28 1977-05-17 Acoustical Design Incorporated Sound generating system for a sound masking package
US4319088A (en) * 1979-11-01 1982-03-09 Commercial Interiors, Inc. Method and apparatus for masking sound
US4348597A (en) * 1980-05-27 1982-09-07 Weber Harold J Latchup resistant pseudorandom binary sequence generator
US4476572A (en) * 1981-09-18 1984-10-09 Bolt Beranek And Newman Inc. Partition system for open plan office spaces
US4438526A (en) * 1982-04-26 1984-03-20 Conwed Corporation Automatic volume and frequency controlled sound masking system
DE3580679D1 (de) * 1984-02-06 1991-01-03 British Broadcasting Corp Binaere pseudo-zufalls-reihengeneratoren.
US4674124A (en) * 1985-06-06 1987-06-16 Bolt Beranek And Newman Inc. Multichannel masking sound generator
US4691291A (en) * 1985-09-23 1987-09-01 Thinking Machines Corporation Random sequence generators
US4771429A (en) * 1986-09-18 1988-09-13 Abbott Laboratories Circuit combining functions of cyclic redundancy check code and pseudo-random number generators

Also Published As

Publication number Publication date
CA1289081C (en) 1991-09-17
GR3017871T3 (en) 1996-01-31
DK170675B1 (da) 1995-11-27
DE68924056T2 (de) 1996-01-25
ES2034922T1 (es) 1993-04-16
GR920300120T1 (en) 1993-03-16
ES2034922T3 (es) 1995-11-16
DE68924056D1 (de) 1995-10-05
EP0376482B1 (en) 1995-08-30
DK670489D0 (da) 1989-12-28
DE376482T1 (de) 1993-01-14
ATE127262T1 (de) 1995-09-15
US4914706A (en) 1990-04-03
EP0376482A3 (en) 1991-11-13
EP0376482A2 (en) 1990-07-04

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