NL8303035A - Stelsel voor het onderdrukken van ruis in een digitaal audiosysteem met gebruikmaking van een adaptieve modulatie-techniek. - Google Patents

Stelsel voor het onderdrukken van ruis in een digitaal audiosysteem met gebruikmaking van een adaptieve modulatie-techniek. Download PDF

Info

Publication number
NL8303035A
NL8303035A NL8303035A NL8303035A NL8303035A NL 8303035 A NL8303035 A NL 8303035A NL 8303035 A NL8303035 A NL 8303035A NL 8303035 A NL8303035 A NL 8303035A NL 8303035 A NL8303035 A NL 8303035A
Authority
NL
Netherlands
Prior art keywords
frequency
analog
digital
signals
response
Prior art date
Application number
NL8303035A
Other languages
English (en)
Dutch (nl)
Original Assignee
Dolby Lab Licensing Corp
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 Dolby Lab Licensing Corp filed Critical Dolby Lab Licensing Corp
Publication of NL8303035A publication Critical patent/NL8303035A/nl

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • 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
    • H03G9/005—Combinations of two or more types of control, e.g. gain control and tone control of digital or coded signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/165—Equalizers; Volume or gain control in limited frequency bands
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • H04B14/046—Systems or methods for reducing noise or bandwidth

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
NL8303035A 1982-09-07 1983-08-31 Stelsel voor het onderdrukken van ruis in een digitaal audiosysteem met gebruikmaking van een adaptieve modulatie-techniek. NL8303035A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/415,028 US4507791A (en) 1982-05-05 1982-09-07 Analog and digital signal apparatus
US41502882 1982-09-07

Publications (1)

Publication Number Publication Date
NL8303035A true NL8303035A (nl) 1984-04-02

Family

ID=23644058

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8303035A NL8303035A (nl) 1982-09-07 1983-08-31 Stelsel voor het onderdrukken van ruis in een digitaal audiosysteem met gebruikmaking van een adaptieve modulatie-techniek.

Country Status (14)

Country Link
US (1) US4507791A (fr)
JP (1) JPS5972225A (fr)
KR (1) KR910006441B1 (fr)
AT (1) AT389962B (fr)
BE (1) BE897704A (fr)
BR (1) BR8304852A (fr)
CA (1) CA1212776A (fr)
CH (1) CH666586A5 (fr)
DE (1) DE3331231A1 (fr)
DK (1) DK405383A (fr)
ES (1) ES8501934A1 (fr)
FR (1) FR2532801B1 (fr)
GB (1) GB2127638B (fr)
NL (1) NL8303035A (fr)

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* Cited by examiner, † Cited by third party
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US4700361A (en) * 1983-10-07 1987-10-13 Dolby Laboratories Licensing Corporation Spectral emphasis and de-emphasis
AU572556B2 (en) * 1983-10-07 1988-05-12 Dolby Laboratories Licensing Corporation A/d encoder and decoder
US4700362A (en) * 1983-10-07 1987-10-13 Dolby Laboratories Licensing Corporation A-D encoder and D-A decoder system
GB2160394B (en) * 1984-05-02 1988-03-16 Pioneer Electronic Corp Noise reduction system
JPS60254828A (ja) * 1984-05-31 1985-12-16 Matsushita Electric Ind Co Ltd アナログ−デイジタル変換器
JPH0650432B2 (ja) * 1986-06-13 1994-06-29 ヤマハ株式会社 楽音信号発生装置
JP2547549B2 (ja) * 1986-10-04 1996-10-23 株式会社河合楽器製作所 電子楽器
US4829299A (en) * 1987-09-25 1989-05-09 Dolby Laboratories Licensing Corporation Adaptive-filter single-bit digital encoder and decoder and adaptation control circuit responsive to bit-stream loading
JP2692843B2 (ja) * 1988-03-31 1997-12-17 株式会社東芝 除算器
JPH02214323A (ja) * 1989-02-15 1990-08-27 Mitsubishi Electric Corp 適応型ハイパスフィルタ
US5021786A (en) * 1989-09-15 1991-06-04 Gerdes Richard C Analog to digital and digital to analog signal processors
US5124706A (en) * 1989-09-15 1992-06-23 Wavephore, Inc. Analog to digital and digital to analog signal processors
US5124657A (en) * 1989-10-06 1992-06-23 Waller Jr James K Composite signal processor and single-ended noise reduction system
US5208595A (en) * 1991-08-21 1993-05-04 Wavephore, Inc. Digitally controlled adaptive slew rate delta modulator
US6760451B1 (en) * 1993-08-03 2004-07-06 Peter Graham Craven Compensating filters
US6795740B1 (en) 2000-03-01 2004-09-21 Apple Computer, Inc. Rectifying overflow and underflow in equalized audio waveforms
EP1438838A1 (fr) * 2001-08-23 2004-07-21 Thomson Licensing S.A. Commande de largeur de bande adaptive dans un amplificateur kinescope
DE10241554A1 (de) * 2002-09-05 2004-03-25 Schleifring Und Apparatebau Gmbh Empfangseinrichtung für digitale Signale
DE102005015647A1 (de) * 2005-04-05 2006-10-12 Sennheiser Electronic Gmbh & Co. Kg Kompandersystem
FR2885460A1 (fr) * 2005-05-09 2006-11-10 Herve Magnier Procede de limitation sans distorsion du niveau d'un signal electrique
CN101971508B (zh) * 2008-03-10 2015-02-11 纽兰斯公司 宽带信号处理的方法、系统和装置
KR101310418B1 (ko) 2010-02-12 2013-09-24 뉴랜스, 인코포레이티드. 광대역 아날로그 무선주파수 부품
FR2961980A1 (fr) * 2010-06-24 2011-12-30 France Telecom Controle d'une boucle de retroaction de mise en forme de bruit dans un codeur de signal audionumerique
WO2012061385A1 (fr) 2010-11-01 2012-05-10 Newlans, Inc. Procédé et appareil de linéarisation d'amplificateur de puissance
US8970252B2 (en) 2010-11-08 2015-03-03 Newlans, Inc. Field programmable analog array
WO2013067118A1 (fr) 2011-11-01 2013-05-10 Newlans, Inc. Traitement de signal à large bande
US9407240B2 (en) 2012-09-05 2016-08-02 Spero Devices, Inc. Bi-quad calibration
US9692420B2 (en) * 2015-11-02 2017-06-27 Ess Technology, Inc. Programmable circuit components with recursive architecture
US20220310111A1 (en) * 2021-03-23 2022-09-29 International Business Machines Corporation Superimposing high-frequency copies of emitted sounds

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606972A (en) * 1946-01-23 1952-08-12 Myron T Smith System for reducing noise in the transmission of electric signals
NL7411988A (nl) * 1974-09-10 1976-03-12 Philips Nv Pulscodemodulatie met dynamiekbegrenzing.
JPS51127608A (en) * 1975-04-30 1976-11-06 Victor Co Of Japan Ltd Signal transmitting unit
US4101849A (en) * 1976-11-08 1978-07-18 Dbx, Inc. Adaptive filter
DE2718631C3 (de) * 1977-04-27 1980-06-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zur digitalen Übertragung von qualitativ hochwertigen Tonsignalen
JPS5427727A (en) * 1977-08-03 1979-03-02 Ricoh Co Ltd Printer
US4130729A (en) * 1977-09-19 1978-12-19 Scitronix Corporation Compressed speech system
US4305050A (en) * 1978-02-06 1981-12-08 Deltalab Research, Inc. Circuitry for generating reference signal for delta encoding systems
JPS5633013A (en) * 1979-08-25 1981-04-03 Chiyoda Chem Eng & Constr Co Ltd Filtering method
JPS5675730A (en) * 1979-11-26 1981-06-23 Pioneer Electronic Corp Information recording and reproducing system
JPS56122243A (en) * 1980-02-29 1981-09-25 Victor Co Of Japan Ltd Noise reduction system
JPS5714211A (en) * 1980-06-30 1982-01-25 Toshiba Corp Dynamic range varying circuit
JPS5731321A (en) * 1980-07-30 1982-02-19 Tokyo Shibaura Electric Co Protection relay unit
JPS5752239A (en) * 1980-09-09 1982-03-27 Sony Corp Noise reducing circuit

Also Published As

Publication number Publication date
CA1212776A (fr) 1986-10-14
FR2532801A1 (fr) 1984-03-09
DE3331231A1 (de) 1984-03-08
BR8304852A (pt) 1984-04-24
BE897704A (fr) 1984-01-02
DK405383D0 (da) 1983-09-06
ATA313483A (de) 1989-07-15
ES525407A0 (es) 1984-12-01
ES8501934A1 (es) 1984-12-01
KR910006441B1 (ko) 1991-08-24
CH666586A5 (de) 1988-07-29
GB2127638A (en) 1984-04-11
FR2532801B1 (fr) 1987-07-17
KR840006109A (ko) 1984-11-21
US4507791A (en) 1985-03-26
GB8323263D0 (en) 1983-09-28
DK405383A (da) 1984-03-08
JPS5972225A (ja) 1984-04-24
AT389962B (de) 1990-02-26
GB2127638B (en) 1986-07-30

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
BV The patent application has lapsed