DE68924056T2 - Vorrichtung zur Maskierung von Schall. - Google Patents
Vorrichtung zur Maskierung von Schall.Info
- Publication number
- DE68924056T2 DE68924056T2 DE68924056T DE68924056T DE68924056T2 DE 68924056 T2 DE68924056 T2 DE 68924056T2 DE 68924056 T DE68924056 T DE 68924056T DE 68924056 T DE68924056 T DE 68924056T DE 68924056 T2 DE68924056 T2 DE 68924056T2
- Authority
- DE
- Germany
- Prior art keywords
- sound
- noise
- spectral shape
- noise signal
- 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 - Fee Related
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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/290,375 US4914706A (en) | 1988-12-29 | 1988-12-29 | Masking sound device |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68924056D1 DE68924056D1 (de) | 1995-10-05 |
DE68924056T2 true DE68924056T2 (de) | 1996-01-25 |
Family
ID=23115713
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68924056T Expired - Fee Related DE68924056T2 (de) | 1988-12-29 | 1989-11-27 | Vorrichtung zur Maskierung von Schall. |
DE198989312291T Pending DE376482T1 (de) | 1988-12-29 | 1989-11-27 | Vorrichtung zur maskierung von schall. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE198989312291T Pending DE376482T1 (de) | 1988-12-29 | 1989-11-27 | Vorrichtung zur maskierung von schall. |
Country Status (8)
Country | Link |
---|---|
US (1) | US4914706A (de) |
EP (1) | EP0376482B1 (de) |
AT (1) | ATE127262T1 (de) |
CA (1) | CA1289081C (de) |
DE (2) | DE68924056T2 (de) |
DK (1) | DK170675B1 (de) |
ES (1) | ES2034922T3 (de) |
GR (2) | GR920300120T1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10614789B2 (en) | 2017-05-17 | 2020-04-07 | Jaguar Land Rover Limited | Apparatus and method for privacy enhancement |
Families Citing this family (24)
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 |
US20030219133A1 (en) | 2001-10-24 | 2003-11-27 | Acentech, Inc. | Sound masking system |
WO2003037035A1 (en) * | 2001-10-24 | 2003-05-01 | 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 |
WO2016172446A1 (en) * | 2015-04-24 | 2016-10-27 | Rensselaer Polytechnic Institute | Sound masking in open-plan spaces using natural sounds |
EP3292703B8 (de) | 2015-05-15 | 2021-03-10 | Nureva Inc. | System und verfahren zur einbettung zusätzlicher informationen in einem schallmaskenrauschsignal |
WO2017201269A1 (en) | 2016-05-20 | 2017-11-23 | Cambridge Sound Management, Inc. | Self-powered loudspeaker for sound masking |
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)
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 |
DE3580049D1 (de) * | 1984-02-06 | 1990-11-08 | 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 |
-
1988
- 1988-12-29 US US07/290,375 patent/US4914706A/en not_active Expired - Lifetime
-
1989
- 1989-02-27 CA CA000592236A patent/CA1289081C/en not_active Expired - Lifetime
- 1989-11-27 DE DE68924056T patent/DE68924056T2/de not_active Expired - Fee Related
- 1989-11-27 ES ES89312291T patent/ES2034922T3/es not_active Expired - Lifetime
- 1989-11-27 DE DE198989312291T patent/DE376482T1/de active Pending
- 1989-11-27 AT AT89312291T patent/ATE127262T1/de not_active IP Right Cessation
- 1989-11-27 EP EP89312291A patent/EP0376482B1/de not_active Expired - Lifetime
- 1989-12-28 DK DK670489A patent/DK170675B1/da not_active IP Right Cessation
-
1993
- 1993-03-16 GR GR920300120T patent/GR920300120T1/el unknown
-
1995
- 1995-10-25 GR GR950402975T patent/GR3017871T3/el unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10614789B2 (en) | 2017-05-17 | 2020-04-07 | Jaguar Land Rover Limited | Apparatus and method for privacy enhancement |
Also Published As
Publication number | Publication date |
---|---|
EP0376482A3 (de) | 1991-11-13 |
ES2034922T3 (es) | 1995-11-16 |
ES2034922T1 (es) | 1993-04-16 |
GR920300120T1 (en) | 1993-03-16 |
CA1289081C (en) | 1991-09-17 |
DK670489A (da) | 1990-06-30 |
ATE127262T1 (de) | 1995-09-15 |
DK670489D0 (da) | 1989-12-28 |
DE376482T1 (de) | 1993-01-14 |
EP0376482B1 (de) | 1995-08-30 |
DK170675B1 (da) | 1995-11-27 |
GR3017871T3 (en) | 1996-01-31 |
DE68924056D1 (de) | 1995-10-05 |
US4914706A (en) | 1990-04-03 |
EP0376482A2 (de) | 1990-07-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ATE127262T1 (de) | Vorrichtung zur maskierung von schall. | |
DE3856103D1 (de) | Vorrichtung zur Erzeugung von Tonsignalen | |
EP0279603A3 (de) | Vorrichtung und Methode für die Stabilisierung einer optischen Signalquelle | |
DE68900039D1 (de) | Signalverarbeitungssystem fuer ein hoergeraet. | |
SE8100191L (sv) | Anordning for alstring av hjernvagmonster | |
DE69016824T2 (de) | Vorrichtung zur Erzeugung von Musiktonwellenformsignalen. | |
FI883446A0 (fi) | Foerfarande foer transmission av digitaliska audiosignaler. | |
ATE120059T1 (de) | Signal-identifikationssystem. | |
DE3889331D1 (de) | Vorrichtung zur Steuerung von Musiktönen gemäss einem Eingangswellenformsignal. | |
US3594786A (en) | Electronic arrangement for simulating animal sounds | |
ZA888570B (en) | Method for monitoring acoustic emissions | |
DE69517263T2 (de) | Vorrichtung zur Erzeugung von Tonsignalen | |
DE3382304D1 (de) | Naeherungseinstellmittel. | |
ATE180364T1 (de) | Verfahren zur beseitigung von störungen bei stereo-rundfunk-signalen | |
ATE50672T1 (de) | Schaltungsanordnung zur lautstaerkestellung. | |
ATE266906T1 (de) | Vorrichtung zur pulsformung von hochfrequenzsignalen | |
JPS5719690A (en) | Information sound generator for clock | |
JPS52111713A (en) | Electronic instrument | |
IT1117427B (it) | Procedimento per un sicuro riscontro di segnali sinusoidali di frequenza acustica | |
JPS5560881A (en) | Time announcing sound generator | |
SU1832953A1 (ru) | Способ распознавания сейсмических сигналов | |
ES8106991A1 (es) | Una disposicion para generar la frecuencia piloto de super- grupo de 411'92 khz. | |
DD133005A1 (de) | Vorrichtung zur momentanen erzeugung vorbestimmten druckes zur messgeraetejustage |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |