NL7901477A - Geluidsweergave in een ruimte met een onafhankelijke geluidsbron. - Google Patents

Geluidsweergave in een ruimte met een onafhankelijke geluidsbron. Download PDF

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Publication number
NL7901477A
NL7901477A NL7901477A NL7901477A NL7901477A NL 7901477 A NL7901477 A NL 7901477A NL 7901477 A NL7901477 A NL 7901477A NL 7901477 A NL7901477 A NL 7901477A NL 7901477 A NL7901477 A NL 7901477A
Authority
NL
Netherlands
Prior art keywords
sound
channel
control voltage
frequency
signal
Prior art date
Application number
NL7901477A
Other languages
English (en)
Dutch (nl)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Priority to NL7901477A priority Critical patent/NL7901477A/nl
Priority to CA000346137A priority patent/CA1142859A/en
Priority to DK078380A priority patent/DK155264C/da
Priority to IT20134/80A priority patent/IT1141380B/it
Priority to CH144380A priority patent/CH646286A5/de
Priority to GB8006012A priority patent/GB2044564B/en
Priority to DE19803006810 priority patent/DE3006810A1/de
Priority to AU55849/80A priority patent/AU526519B2/en
Priority to FR8004094A priority patent/FR2450002B1/fr
Priority to ES488898A priority patent/ES488898A1/es
Priority to JP2234980A priority patent/JPS55117200A/ja
Priority to US06/124,880 priority patent/US4322579A/en
Publication of NL7901477A publication Critical patent/NL7901477A/nl

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems

Landscapes

  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Control Of Amplification And Gain Control (AREA)
NL7901477A 1979-02-26 1979-02-26 Geluidsweergave in een ruimte met een onafhankelijke geluidsbron. NL7901477A (nl)

Priority Applications (12)

Application Number Priority Date Filing Date Title
NL7901477A NL7901477A (nl) 1979-02-26 1979-02-26 Geluidsweergave in een ruimte met een onafhankelijke geluidsbron.
CA000346137A CA1142859A (en) 1979-02-26 1980-02-21 Sound reproduction in a space with an independent sound source
DK078380A DK155264C (da) 1979-02-26 1980-02-22 Lydreproduktion i et rum med en uafhaengig lydkilde
IT20134/80A IT1141380B (it) 1979-02-26 1980-02-22 Complesso per la riproduzione del suono in uno spazio con una sorgente indipendente di suoni
CH144380A CH646286A5 (de) 1979-02-26 1980-02-22 Einrichtung fuer tonwiedergabe in einem raum mit einer unabhaengigen schallquelle.
GB8006012A GB2044564B (en) 1979-02-26 1980-02-22 Grain control systems
DE19803006810 DE3006810A1 (de) 1979-02-26 1980-02-23 Tonwiedergabe in einem raum mit einer unabhaengigen schallquelle
AU55849/80A AU526519B2 (en) 1979-02-26 1980-02-25 Audio characteristic adjustment
FR8004094A FR2450002B1 (fr) 1979-02-26 1980-02-25 Dispositif pour la reproduction de son dans une enceinte contenant une source de son independante
ES488898A ES488898A1 (es) 1979-02-26 1980-02-25 Una disposicion perfeccionada para la reproduccion del soni-do en un espacio o recinto
JP2234980A JPS55117200A (en) 1979-02-26 1980-02-26 Sound reproducer
US06/124,880 US4322579A (en) 1979-02-26 1980-02-26 Sound reproduction in a space with an independent sound source

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7901477A NL7901477A (nl) 1979-02-26 1979-02-26 Geluidsweergave in een ruimte met een onafhankelijke geluidsbron.
NL7901477 1979-02-26

Publications (1)

Publication Number Publication Date
NL7901477A true NL7901477A (nl) 1980-08-28

Family

ID=19832688

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7901477A NL7901477A (nl) 1979-02-26 1979-02-26 Geluidsweergave in een ruimte met een onafhankelijke geluidsbron.

Country Status (12)

Country Link
US (1) US4322579A (zh)
JP (1) JPS55117200A (zh)
AU (1) AU526519B2 (zh)
CA (1) CA1142859A (zh)
CH (1) CH646286A5 (zh)
DE (1) DE3006810A1 (zh)
DK (1) DK155264C (zh)
ES (1) ES488898A1 (zh)
FR (1) FR2450002B1 (zh)
GB (1) GB2044564B (zh)
IT (1) IT1141380B (zh)
NL (1) NL7901477A (zh)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5715597A (en) * 1980-07-02 1982-01-26 Nippon Gakki Seizo Kk Microphone device
US4381488A (en) 1981-02-18 1983-04-26 Fricke Jobst P Dynamic volume expander varying as a function of ambient noise level
FR2502370A1 (fr) * 1981-03-18 1982-09-24 Trt Telecom Radio Electr Dispositif de reduction du bruit dans un signal de parole mele de bruit
US4536888A (en) * 1981-08-21 1985-08-20 Plantronics, Inc. Voice communication instrument system with line-powered receiver conditioning circuit
DE3315150C3 (de) * 1982-04-28 1996-04-25 Pioneer Electronic Corp Selbsttätige Lautstärke-Steuervorrichtung
US4791672A (en) * 1984-10-05 1988-12-13 Audiotone, Inc. Wearable digital hearing aid and method for improving hearing ability
JPH01500952A (ja) * 1986-08-13 1989-03-30 アランダ・オーデイオ・アプリケーションズ・ピー・テイ・ワイ・リミテッド 適応利得制御増幅器
US4809274A (en) * 1986-09-19 1989-02-28 M/A-Com Government Systems, Inc. Digital audio companding and error conditioning
US4696044A (en) * 1986-09-29 1987-09-22 Waller Jr James K Dynamic noise reduction with logarithmic control
GB2214013B (en) * 1988-01-14 1992-04-22 Hazel Grove Music Co Ltd Sound level control equipment
JP3034876B2 (ja) * 1988-11-08 2000-04-17 パイオニア株式会社 車載音響装置における自動音量調整装置
JP3193032B2 (ja) * 1989-12-05 2001-07-30 パイオニア株式会社 車載用自動音量調整装置
GB2257317A (en) * 1991-06-26 1993-01-06 Damian Rupert Lindley Automatic volume control for car stereo
FI90166C (fi) * 1991-10-16 1993-12-27 Nokia Mobile Phones Ltd Cmos-kompander
JPH07297900A (ja) * 1994-04-26 1995-11-10 Mitsubishi Electric Corp 騒音対策通話機
GB2289583B (en) * 1994-05-04 1999-06-23 Gilden Research Ltd Adaptive audio system
JPH1083193A (ja) * 1996-09-09 1998-03-31 Matsushita Electric Ind Co Ltd 音声合成装置および音声素片作成方法
US7190292B2 (en) * 1999-11-29 2007-03-13 Bizjak Karl M Input level adjust system and method
US8085943B2 (en) * 1999-11-29 2011-12-27 Bizjak Karl M Noise extractor system and method
US6870830B1 (en) 2000-11-30 2005-03-22 3Com Corporation System and method for performing messaging services using a data communications channel in a data network telephone system
US8249271B2 (en) * 2007-01-23 2012-08-21 Karl M. Bizjak Noise analysis and extraction systems and methods
US10284703B1 (en) * 2015-08-05 2019-05-07 Netabla, Inc. Portable full duplex intercom system with bluetooth protocol and method of using the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2338551A (en) * 1942-07-09 1944-01-04 Rca Corp Automatic volume control
US2657264A (en) * 1949-09-17 1953-10-27 Bell Telephone Labor Inc Automatic volume control
DE2437697A1 (de) * 1974-08-05 1976-02-26 Deutsche Bundesbahn Verfahren und einrichtung zur automatischen anpassung der lautstaerke eines lautsprechers oder hoerers an den stoerpegel der umgebung
DE2456468C3 (de) * 1974-11-29 1979-10-18 Jobst Prof. Dr. 5000 Koeln Fricke Elektroakustisch« Tonwiedergabeeinrichtung mit einem durch einen Störschalldetektor gesteuerten Verstärker
US4061874A (en) * 1976-06-03 1977-12-06 Fricke J P System for reproducing sound information
US4061875A (en) * 1977-02-22 1977-12-06 Stephen Freifeld Audio processor for use in high noise environments
DE2752657A1 (de) * 1977-11-25 1979-06-07 Blaupunkt Werke Gmbh Stoergeraeuschabhaengige lautstaerkensteuerung

Also Published As

Publication number Publication date
CH646286A5 (de) 1984-11-15
AU5584980A (en) 1980-09-04
AU526519B2 (en) 1983-01-13
DK78380A (da) 1980-08-27
JPH02718B2 (zh) 1990-01-09
IT8020134A0 (it) 1980-02-22
DE3006810C2 (zh) 1988-03-31
DK155264C (da) 1989-07-24
GB2044564A (en) 1980-10-15
IT1141380B (it) 1986-10-01
DE3006810A1 (de) 1980-09-11
FR2450002B1 (fr) 1986-07-25
JPS55117200A (en) 1980-09-09
US4322579A (en) 1982-03-30
CA1142859A (en) 1983-03-15
ES488898A1 (es) 1980-09-16
FR2450002A1 (fr) 1980-09-19
DK155264B (da) 1989-03-13
GB2044564B (en) 1983-02-23

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A1B A search report has been drawn up
BV The patent application has lapsed