GB1384761A - Audio frequency apparatus - Google Patents

Audio frequency apparatus

Info

Publication number
GB1384761A
GB1384761A GB770172A GB770172A GB1384761A GB 1384761 A GB1384761 A GB 1384761A GB 770172 A GB770172 A GB 770172A GB 770172 A GB770172 A GB 770172A GB 1384761 A GB1384761 A GB 1384761A
Authority
GB
United Kingdom
Prior art keywords
filter
filters
loud
fed
bank
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
GB770172A
Other languages
English (en)
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.)
United Recording Electronic Industries
Original Assignee
United Recording Electronic Industries
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 United Recording Electronic Industries filed Critical United Recording Electronic Industries
Publication of GB1384761A publication Critical patent/GB1384761A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/02—Manually-operated control
    • H03G5/025—Equalizers; Volume or gain control in limited frequency bands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Stereophonic System (AREA)
GB770172A 1971-02-24 1972-02-18 Audio frequency apparatus Expired GB1384761A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11845471A 1971-02-24 1971-02-24

Publications (1)

Publication Number Publication Date
GB1384761A true GB1384761A (en) 1975-02-19

Family

ID=22378694

Family Applications (1)

Application Number Title Priority Date Filing Date
GB770172A Expired GB1384761A (en) 1971-02-24 1972-02-18 Audio frequency apparatus

Country Status (5)

Country Link
US (1) US3732370A (enExample)
CA (1) CA953221A (enExample)
DE (1) DE2208820C3 (enExample)
FR (1) FR2135973A5 (enExample)
GB (1) GB1384761A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112929808A (zh) * 2021-02-05 2021-06-08 四川湖山电器股份有限公司 检测校园广播播音设备能否正常工作的方法、模块及系统

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906157A (en) * 1973-08-13 1975-09-16 Charles R Boner Method and apparatus for tailoring the house curve of a sound system
US4118601A (en) * 1976-11-24 1978-10-03 Audio Developments International System and a method for equalizing an audio sound transducer system
US4209672A (en) * 1977-07-15 1980-06-24 Tokyo Shibaura Denki Kabushiki Kaisha Method and apparatus for measuring characteristics of a loudspeaker
JPS5530888U (enExample) * 1978-08-21 1980-02-28
FR2457703A1 (fr) * 1979-05-31 1980-12-26 Rosset Didier Egaliseur automatique de bandes passantes audiofrequences
US4306113A (en) * 1979-11-23 1981-12-15 Morton Roger R A Method and equalization of home audio systems
US4316060A (en) * 1980-01-04 1982-02-16 Dbx, Inc. Equalizing system
FR2479524A1 (fr) * 1980-03-31 1981-10-02 Michel Andre Procede d'etude acoustique dans une salle et dispositif pour la mise en oeuvre
DE3038929C2 (de) * 1980-10-15 1982-10-28 Matth. Hohner Ag, 7218 Trossingen Verfahren und Einrichtung zur Frequenzganganpassung eines Schallerzeugers an die Akustik eines beschallten Raums
FR2506980B1 (fr) * 1981-05-27 1986-03-28 France Etat Appareil generateur de bruit et dispositif de controle de l'isolation phonique dans les batiments
US4458362A (en) * 1982-05-13 1984-07-03 Teledyne Industries, Inc. Automatic time domain equalization of audio signals
US4739513A (en) * 1984-05-31 1988-04-19 Pioneer Electronic Corporation Method and apparatus for measuring and correcting acoustic characteristic in sound field
JPS61108213A (ja) * 1984-10-31 1986-05-26 Pioneer Electronic Corp オ−トグラフイツクイコライザ
JPS61108289A (ja) * 1984-10-31 1986-05-26 Pioneer Electronic Corp 自動音場補正装置
DE3529553A1 (de) * 1985-08-17 1987-02-26 Kuhn Dr & Co Sprechhilfegeraet fuer kehlkopfoperierte
US4891716A (en) * 1988-10-03 1990-01-02 Datatape Incorporated Autocalibration of a data signal channel through simultaneous control signals
DE19612981A1 (de) * 1995-03-31 1996-11-21 Fraunhofer Ges Forschung Akustische Prüfung von Lautsprechern
US6792119B1 (en) * 1997-05-05 2004-09-14 Koninklijke Philips Electronics N.V. Audio system
US6111957A (en) * 1998-07-02 2000-08-29 Acoustic Technologies, Inc. Apparatus and method for adjusting audio equipment in acoustic environments
US20040013272A1 (en) * 2001-09-07 2004-01-22 Reams Robert W System and method for processing audio data
WO2002021505A2 (en) * 2000-09-08 2002-03-14 Neural Audio, Inc. System and method for processing audio data
US7929708B2 (en) * 2004-01-12 2011-04-19 Dts, Inc. Audio spatial environment engine
KR101210797B1 (ko) * 2004-10-28 2012-12-10 디티에스 워싱턴, 엘엘씨 오디오 공간 환경 엔진
US20060106620A1 (en) * 2004-10-28 2006-05-18 Thompson Jeffrey K Audio spatial environment down-mixer
US7853022B2 (en) * 2004-10-28 2010-12-14 Thompson Jeffrey K Audio spatial environment engine
US20090052701A1 (en) * 2007-08-20 2009-02-26 Reams Robert W Spatial teleconferencing system and method
JP5459556B2 (ja) * 2010-12-14 2014-04-02 株式会社Ｊｖｃケンウッド 音響特性調整装置、音響特性調整方法およびコンピュータプログラム
CN103379419A (zh) * 2012-04-16 2013-10-30 上海晨兴希姆通电子科技有限公司 音频通路测试系统
JP5997768B2 (ja) * 2012-06-19 2016-09-28 Toa株式会社 スピーカー装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256391A (en) * 1963-04-16 1966-06-14 Boner Charles Paul Method and apparatus for controlling feedback
US3624298A (en) * 1969-03-05 1971-11-30 Ltv Ling Altec Inc Sound-improving means and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112929808A (zh) * 2021-02-05 2021-06-08 四川湖山电器股份有限公司 检测校园广播播音设备能否正常工作的方法、模块及系统

Also Published As

Publication number Publication date
DE2208820C3 (de) 1981-09-10
DE2208820A1 (de) 1972-08-31
CA953221A (en) 1974-08-20
FR2135973A5 (enExample) 1972-12-22
DE2208820B2 (enExample) 1975-02-13
US3732370A (en) 1973-05-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee