ES2149237T3 - Sistema de generacion de una señal variable en el tiempo para suprimir una señal primaria con minimacion de un error de prediccion. - Google Patents

Sistema de generacion de una señal variable en el tiempo para suprimir una señal primaria con minimacion de un error de prediccion.

Info

Publication number
ES2149237T3
ES2149237T3 ES94203399T ES94203399T ES2149237T3 ES 2149237 T3 ES2149237 T3 ES 2149237T3 ES 94203399 T ES94203399 T ES 94203399T ES 94203399 T ES94203399 T ES 94203399T ES 2149237 T3 ES2149237 T3 ES 2149237T3
Authority
ES
Spain
Prior art keywords
signal
time
providing
cancellation
filter
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 - Lifetime
Application number
ES94203399T
Other languages
English (en)
Inventor
Nicolaas Jan Doelman
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.)
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Original Assignee
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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 Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO filed Critical Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Application granted granted Critical
Publication of ES2149237T3 publication Critical patent/ES2149237T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17813—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms
    • G10K11/17817—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms between the output signals and the error signals, i.e. secondary path
    • 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
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17853—Methods, e.g. algorithms; Devices of the filter
    • G10K11/17854—Methods, e.g. algorithms; Devices of the filter the filter being an adaptive filter
    • 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
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17879—General system configurations using both a reference signal and an error signal
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3045—Multiple acoustic inputs, single acoustic output
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3053—Speeding up computation or convergence, or decreasing the computational load

Abstract

SISTEMA PARA LA GENERACION DE UNA SEÑAL DE VARIANTE TEMPORAL (SEC(T) PARA LA SUPRESION DE UNA SEÑAL PRIMARIA (D(T)) QUE COMPRENDE: UNA UNIDAD DE CONTROL (1)QUE TIENE UN FILTRO FORWARD (10) Y/O UN FILTRO DE FEEDBACK (11) PARA PROPORCIONAR UNA SEÑAL DE CONTROL DE CANCELACION (U(T)); MEDIOS DE GENERAR UNA CANCELACION (2) PARA GENERAR UNA SEÑAL DE CANCELACION QUE SE PROPAGA A LO LARGO DE UN CAMINO SECUNDARIO CON UNA FUNCION DE TRANSFERENCIA A/B Y LUEGO PROPORCIONA LA SEÑAL DE VARIANTE TEMPORAL (SEC(T), MEDIOS SENSORES (4) PARA MEDIR UNA SEÑAL RESIDUAL (EPSILON(T)), MEDIOS DE ACTUALIZACION (5) PARA PROPORCIONAR UNA SEÑAL DE ACTUALIZACION (UP(T)) PARA ACTUALIZAR LOS COEFICIENTES DE FILTRO EN LA UNIDAD DE CONTROL Y UN FILTRO DE PREDICCION (8), DENTRO DE LA UNIDAD DE ACTUALIZACION (5), QUE ESTA A PROPOSITO PARA GENERAR UN VALOR PREDICHO (YPRED(T)) QUE ES IGUAL AL VALOR ANTICIPADO DE SALIDA DE LOS MEDIOS SENSORES (4) EN UN PUNTO DE TIEMPO ESPECIFICO SI LOS COEFICIENTES DE LOS FILTROS (10;11) HUBIERAN TENIDO LOS VALORES OBTENIDOS MAS RECIENTEMENTE DURANTE EL TIEMPO DE REACCION COMPLETO DEL CAMINO SECUNDARIO DE TRANSFERENCIA.
ES94203399T 1993-11-30 1994-11-22 Sistema de generacion de una señal variable en el tiempo para suprimir una señal primaria con minimacion de un error de prediccion. Expired - Lifetime ES2149237T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL9302076A NL9302076A (nl) 1993-11-30 1993-11-30 Systeem voor het genereren van een tijdvariant signaal ter onderdrukking van een primair signaal met minimalisatie van een predictiefout.

Publications (1)

Publication Number Publication Date
ES2149237T3 true ES2149237T3 (es) 2000-11-01

Family

ID=19863207

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94203399T Expired - Lifetime ES2149237T3 (es) 1993-11-30 1994-11-22 Sistema de generacion de una señal variable en el tiempo para suprimir una señal primaria con minimacion de un error de prediccion.

Country Status (7)

Country Link
US (1) US5559839A (es)
EP (1) EP0657871B1 (es)
AT (1) ATE193956T1 (es)
DE (1) DE69424924T2 (es)
DK (1) DK0657871T3 (es)
ES (1) ES2149237T3 (es)
NL (1) NL9302076A (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5805480A (en) * 1997-07-03 1998-09-08 National Semiconductor Corporation Rotationally predictive adaptive filter
WO2001086358A1 (en) * 2000-05-08 2001-11-15 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Method for controlling an active control system and system using such method
US6963649B2 (en) * 2000-10-24 2005-11-08 Adaptive Technologies, Inc. Noise cancelling microphone
AU2003903826A0 (en) 2003-07-24 2003-08-07 University Of South Australia An ofdm receiver structure
JP2011121534A (ja) * 2009-12-14 2011-06-23 Honda Motor Co Ltd 能動型騒音制御装置
US11688381B2 (en) * 2021-09-15 2023-06-27 Jiangnan University Feedback active noise control system and strategy with online secondary-path modeling

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4677676A (en) * 1986-02-11 1987-06-30 Nelson Industries, Inc. Active attenuation system with on-line modeling of speaker, error path and feedback pack
US5135079A (en) * 1990-02-28 1992-08-04 Kabushiki Kaisha Toshiba Noise prevention apparatus for a cable winch elevator
US5117401A (en) * 1990-08-16 1992-05-26 Hughes Aircraft Company Active adaptive noise canceller without training mode
JP3172198B2 (ja) * 1991-03-01 2001-06-04 株式会社東芝 等化方式
US5150414A (en) * 1991-03-27 1992-09-22 The United States Of America As Represented By The Secretary Of The Navy Method and apparatus for signal prediction in a time-varying signal system
JPH0719157B2 (ja) * 1991-08-05 1995-03-06 富士通テン株式会社 騒音制御装置
JP2924496B2 (ja) * 1992-09-30 1999-07-26 松下電器産業株式会社 騒音制御装置
US5388080A (en) * 1993-04-27 1995-02-07 Hughes Aircraft Company Non-integer sample delay active noise canceller
US5414733A (en) * 1993-12-20 1995-05-09 Adtran Decision feedback equalizer employing fixed ratio postcursor taps for minimizing noise and intersymbol interference in signals conveyed over high speed data service loop

Also Published As

Publication number Publication date
DE69424924D1 (de) 2000-07-20
DK0657871T3 (da) 2000-10-30
EP0657871B1 (en) 2000-06-14
DE69424924T2 (de) 2001-02-22
US5559839A (en) 1996-09-24
NL9302076A (nl) 1995-06-16
EP0657871A1 (en) 1995-06-14
ATE193956T1 (de) 2000-06-15

Similar Documents

Publication Publication Date Title
NO923144D0 (no) Anordning med flere sensorer og aktuatorer for annuleringav repeterende fenomener
DE69128519D1 (de) Aktives Dämpfungssystem mit einer vorgegebenen akustischen Ausgangswelle
EP0585976A3 (en) Hearing aid with cancellation of acoustic feedback
DE69331223T2 (de) Netzwerkechokompensator
EP0462815A3 (en) Receding horizon based adaptive control having means for minimizing operating costs
ES2136158T3 (es) Sistema para la convergencia rapida de un filtro adaptativo para la generacion de una señal variable en el tiempo para la cancelacion de una señal primaria.
ATE186149T1 (de) Mehrkanalige aktive schalldämpfungsanordnung
ES2149237T3 (es) Sistema de generacion de una señal variable en el tiempo para suprimir una señal primaria con minimacion de un error de prediccion.
JPS52123625A (en) Focusing optical system for electrophotographic copier
ZA947444B (en) Treatment of anxiety with the aid of (S)-(-)-alpha-ethyl-2-oxo-1-pyrrolidineacetamide
DE69109858D1 (de) Kontrolle des elektrostatografischen Farbprozesses mittels Tonerentwicklungscharakteristik.
ES2030246T3 (es) Procedimiento para la obtencion de derivados de benzofurano y fungicidas que contienen estos compuestos.
FI890798A (fi) Foerfarande foer diacylering av foereningar som innehaoller tvao aromatiska kaernor.
SE8402645D0 (sv) Signalavgivningsanordning for handikappade
SE9200988L (sv) Sätt vid limning
ATE476055T1 (de) Echounterdrückung
JPS5550282A (en) Fixing apparatus in electrophotographic copier
JPS53102749A (en) Recorder
JPS55149846A (en) Function generator
IT1262506B (it) Correzione via "feed in" dell'assetto della nave.
JPS52114340A (en) Optical scanner
SE8304788L (sv) Nederbordsmetare
KR0117094Y1 (en) The developing magnetic roller for laser beam printers
JPS57135363A (en) Speed operating device of moving body
ITTO930018A0 (it) Dispositivo di controllo attivo delle vibrazioni periodiche generate da un motore.

Legal Events

Date Code Title Description
FC2A Grant refused

Effective date: 19950601

FG2A Definitive protection

Ref document number: 657871

Country of ref document: ES