CA988036A - Sound masking method and system - Google Patents

Sound masking method and system

Info

Publication number
CA988036A
CA988036A CA198,010A CA198010A CA988036A CA 988036 A CA988036 A CA 988036A CA 198010 A CA198010 A CA 198010A CA 988036 A CA988036 A CA 988036A
Authority
CA
Canada
Prior art keywords
masking method
sound masking
sound
masking
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.)
Expired
Application number
CA198,010A
Inventor
Theodore Wildi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA988036A publication Critical patent/CA988036A/en
Expired 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
    • H04K3/40—Jamming having variable characteristics
    • H04K3/46—Jamming having variable characteristics characterized in that the jamming signal is produced by retransmitting a received signal, after delay or processing
    • 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
    • H04K3/45—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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
CA198,010A 1973-06-18 1974-04-23 Sound masking method and system Expired CA988036A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37083273 US3879578A (en) 1973-06-18 1973-06-18 Sound masking method and system

Publications (1)

Publication Number Publication Date
CA988036A true CA988036A (en) 1976-04-27

Family

ID=23461375

Family Applications (1)

Application Number Title Priority Date Filing Date
CA198,010A Expired CA988036A (en) 1973-06-18 1974-04-23 Sound masking method and system

Country Status (2)

Country Link
US (1) US3879578A (en)
CA (1) CA988036A (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4052564A (en) * 1975-09-19 1977-10-04 Herman Miller, Inc. Masking sound generator
US3985957A (en) * 1975-10-28 1976-10-12 Dukane Corporation Sound masking system for open plan office
US4011408A (en) * 1975-12-17 1977-03-08 Trw Inc. Audio transmission protection apparatus
US4280019A (en) * 1977-12-06 1981-07-21 Herman Miller, Inc. Combination acoustic conditioner and light fixture
US4195202A (en) * 1978-01-03 1980-03-25 Technical Communications Corporation Voice privacy system with amplitude masking
US4476572A (en) * 1981-09-18 1984-10-09 Bolt Beranek And Newman Inc. Partition system for open plan office spaces
US5024288A (en) * 1989-08-10 1991-06-18 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Sound attenuation apparatus
US5197098A (en) * 1992-04-15 1993-03-23 Drapeau Raoul E Secure conferencing system
US5454037A (en) * 1993-10-28 1995-09-26 Grayline International Limited Portable secure-telephone communications module
US6888945B2 (en) 1998-03-11 2005-05-03 Acentech, Inc. Personal sound masking system
US7088828B1 (en) * 2000-04-13 2006-08-08 Cisco Technology, Inc. Methods and apparatus for providing privacy for a user of an audio electronic device
GB0027830D0 (en) * 2000-11-14 2000-12-27 Calder Robert M Anti social behaviour
WO2003037035A1 (en) * 2001-10-24 2003-05-01 Acentech, Inc. Sound masking system
US20030219133A1 (en) * 2001-10-24 2003-11-27 Acentech, Inc. Sound masking system
US7143028B2 (en) * 2002-07-24 2006-11-28 Applied Minds, Inc. Method and system for masking speech
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
CA2471674A1 (en) * 2004-06-21 2005-12-21 Soft Db Inc. Auto-adjusting sound masking system and method
EP1638078A1 (en) * 2004-09-15 2006-03-22 Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO Method and means for counteracting undesired sound utterances of a group
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
US7363227B2 (en) * 2005-01-10 2008-04-22 Herman Miller, Inc. Disruption of speech understanding by adding a privacy sound thereto
WO2008133490A2 (en) * 2007-04-30 2008-11-06 Jin Hem Thong A sound processing device
DE102008035181A1 (en) * 2008-06-26 2009-12-31 Zumtobel Lighting Gmbh Method and system for reducing acoustic interference
US8223985B2 (en) * 2009-04-22 2012-07-17 General Electric Company Masking of pure tones within sound from a noise generating source
US8532987B2 (en) * 2010-08-24 2013-09-10 Lawrence Livermore National Security, Llc Speech masking and cancelling and voice obscuration
CN104299613B (en) * 2014-09-16 2017-06-20 中国科学院信息工程研究所 sound masking signal generating method and system
US10354638B2 (en) 2016-03-01 2019-07-16 Guardian Glass, LLC Acoustic wall assembly having active noise-disruptive properties, and/or method of making and/or using the same
US10373626B2 (en) * 2017-03-15 2019-08-06 Guardian Glass, LLC Speech privacy system and/or associated method
US10304473B2 (en) 2017-03-15 2019-05-28 Guardian Glass, LLC Speech privacy system and/or associated method
US10726855B2 (en) * 2017-03-15 2020-07-28 Guardian Glass, Llc. Speech privacy system and/or associated method
US10607590B2 (en) 2017-09-05 2020-03-31 Fresenius Medical Care Holdings, Inc. Masking noises from medical devices, including dialysis machines

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217080A (en) * 1960-04-01 1965-11-09 Jr Melville Clark Electroacoustical system
DK99816C (en) * 1961-06-29 1964-09-21 Bang & Olufsen Produktionssels Coupling for simultaneous amplification of an original and a signal derived therefrom.
US3213199A (en) * 1962-01-02 1965-10-19 Bissett Berman Corp System for masking information
US3476880A (en) * 1966-09-30 1969-11-04 Bell Telephone Labor Inc Transmitting system
US3541258A (en) * 1967-05-29 1970-11-17 Sylvania Electric Prod Conference communication system with independent variable amplification of sidetone and conferee signals
US3497623A (en) * 1968-08-07 1970-02-24 Barry S Todd Secure personal conversation using time blanked noise generator
DE1918741A1 (en) * 1969-04-12 1970-10-15 Messerschmitt Boelkow Blohm Soundproofing by sound grille
US3681531A (en) * 1970-09-04 1972-08-01 Industrial Research Prod Inc Digital delay system for audio signal processing

Also Published As

Publication number Publication date
US3879578A (en) 1975-04-22

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