FR2400279A1 - Dispositifs d'analyse et de traitement de signaux - Google Patents

Dispositifs d'analyse et de traitement de signaux

Info

Publication number
FR2400279A1
FR2400279A1 FR7724494A FR7724494A FR2400279A1 FR 2400279 A1 FR2400279 A1 FR 2400279A1 FR 7724494 A FR7724494 A FR 7724494A FR 7724494 A FR7724494 A FR 7724494A FR 2400279 A1 FR2400279 A1 FR 2400279A1
Authority
FR
France
Prior art keywords
devices
channel
processing devices
signal analysis
analysis
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.)
Granted
Application number
FR7724494A
Other languages
English (en)
Other versions
FR2400279B1 (fr
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
Priority to FR7724494A priority Critical patent/FR2400279A1/fr
Priority to US05/930,250 priority patent/US4223181A/en
Publication of FR2400279A1 publication Critical patent/FR2400279A1/fr
Application granted granted Critical
Publication of FR2400279B1 publication Critical patent/FR2400279B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0001—Analogue adaptive filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/34—Networks for connecting several sources or loads working on different frequencies or frequency bands, to a common load or source

Landscapes

  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Networks Using Active Elements (AREA)

Abstract

Dispositifs de filtrage auto-adaptatifs pour l'analyse et le traitement de signaux audio-fréquence. Ces dispositifs sont caractérisés en ce qu'ils comportent des moyens de filtrage séparant les signaux appliqués en deux portions ou canaux de spectres complémentaires, un premier canal étant considéré comme canal d'erreur pour apprecier en fonction de critères préétablis la transmission dans l'autre canal et réagir sur le positionnement des fréquences de coupure des moyens de filtrage. Applications principales : réducteurs de bruit, dispositifs de compression de largeur de bande, dispositifs d'analyse et de synthèse de la parole.
FR7724494A 1977-08-09 1977-08-09 Dispositifs d'analyse et de traitement de signaux Granted FR2400279A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7724494A FR2400279A1 (fr) 1977-08-09 1977-08-09 Dispositifs d'analyse et de traitement de signaux
US05/930,250 US4223181A (en) 1977-08-09 1978-08-02 Method and apparatus for processing signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7724494A FR2400279A1 (fr) 1977-08-09 1977-08-09 Dispositifs d'analyse et de traitement de signaux

Publications (2)

Publication Number Publication Date
FR2400279A1 true FR2400279A1 (fr) 1979-03-09
FR2400279B1 FR2400279B1 (fr) 1983-02-18

Family

ID=9194397

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7724494A Granted FR2400279A1 (fr) 1977-08-09 1977-08-09 Dispositifs d'analyse et de traitement de signaux

Country Status (2)

Country Link
US (1) US4223181A (fr)
FR (1) FR2400279A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0148249A1 (fr) * 1983-07-05 1985-07-17 Rosemount Inc. Circuit presentant des caracteristiques reglables d'amplitude et de frequence d'augmentation d'amortissement
FR2941576A1 (fr) * 2009-01-28 2010-07-30 St Wireless Sa Procede et systeme de calibration d'une constante de temps integree, et circuit integre pourvu d'un tel systeme

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5696519A (en) * 1979-12-29 1981-08-04 Sony Corp Tone control circuit
DE3900588A1 (de) * 1989-01-11 1990-07-19 Toepholm & Westermann Fernsteuerbares, programmierbares hoergeraetesystem
US5489871A (en) * 1994-04-29 1996-02-06 Audio Products International Corp. Method and circuit for reducing distortion in a filtered signal
US7184556B1 (en) * 1999-08-11 2007-02-27 Microsoft Corporation Compensation system and method for sound reproduction
DE10018666A1 (de) 2000-04-14 2001-10-18 Harman Audio Electronic Sys Vorrichtung und Verfahren zum geräuschabhängigen Anpassen eines akustischen Nutzsignals
US20040125962A1 (en) * 2000-04-14 2004-07-01 Markus Christoph Method and apparatus for dynamic sound optimization
US20040002781A1 (en) * 2002-06-28 2004-01-01 Johnson Keith O. Methods and apparatuses for adjusting sonic balace in audio reproduction systems
EP1580882B1 (fr) * 2004-03-19 2007-01-10 Harman Becker Automotive Systems GmbH Système et procédé d'amélioration audio
US8203941B2 (en) * 2004-05-28 2012-06-19 Hewlett-Packard Development Company, L.P. Virus/worm throttle threshold settings
EP1833163B1 (fr) * 2004-07-20 2019-12-18 Harman Becker Automotive Systems GmbH Système d'amélioration audio et son procédé
US8170221B2 (en) * 2005-03-21 2012-05-01 Harman Becker Automotive Systems Gmbh Audio enhancement system and method
DE602005015426D1 (de) 2005-05-04 2009-08-27 Harman Becker Automotive Sys System und Verfahren zur Intensivierung von Audiosignalen
US8750531B2 (en) * 2009-10-28 2014-06-10 Fairchild Semiconductor Corporation Active noise cancellation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2148994A (en) * 1935-11-06 1939-02-28 Telefunken Gmbh Receiving apparatus equipped with several loudspeakers
US2760011A (en) * 1954-10-25 1956-08-21 Cons Electrodynamics Corp Frequency separating apparatus
US2832828A (en) * 1955-09-26 1958-04-29 Arthur Blumenfeld Loudspeaker circuitry
JPS5750097B2 (fr) * 1973-06-06 1982-10-26

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0148249A1 (fr) * 1983-07-05 1985-07-17 Rosemount Inc. Circuit presentant des caracteristiques reglables d'amplitude et de frequence d'augmentation d'amortissement
EP0148249A4 (fr) * 1983-07-05 1986-08-21 Rosemount Inc Circuit presentant des caracteristiques reglables d'amplitude et de frequence d'augmentation d'amortissement.
FR2941576A1 (fr) * 2009-01-28 2010-07-30 St Wireless Sa Procede et systeme de calibration d'une constante de temps integree, et circuit integre pourvu d'un tel systeme
WO2010086347A2 (fr) * 2009-01-28 2010-08-05 St-Ericsson Sa Système permettant de calibrer une constante de temps d'un circuit intégré et circuit intégré doté d'un tel système
WO2010086347A3 (fr) * 2009-01-28 2010-12-23 St-Ericsson Sa Système permettant de calibrer une constante de temps d'un circuit intégré et circuit intégré doté d'un tel système
CN102301591A (zh) * 2009-01-28 2011-12-28 意法爱立信有限公司 校准集成电路的时间常数的***和设有此***的集成电路
US8610610B2 (en) 2009-01-28 2013-12-17 St-Ericsson Sa System for calibrating a time constant of an integrated circuit, and integrated circuit provided with such a system
CN102301591B (zh) * 2009-01-28 2015-04-29 意法爱立信有限公司 校准集成电路的时间常数的***和设有此***的集成电路

Also Published As

Publication number Publication date
FR2400279B1 (fr) 1983-02-18
US4223181A (en) 1980-09-16

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Legal Events

Date Code Title Description
ST Notification of lapse
RC Opposition against decision of lapse
DA Annulment of decision of lapse
ST Notification of lapse