ES8501934A1 - Un dispositivo de conversion de analogico a digital de audio - Google Patents

Un dispositivo de conversion de analogico a digital de audio

Info

Publication number
ES8501934A1
ES8501934A1 ES525407A ES525407A ES8501934A1 ES 8501934 A1 ES8501934 A1 ES 8501934A1 ES 525407 A ES525407 A ES 525407A ES 525407 A ES525407 A ES 525407A ES 8501934 A1 ES8501934 A1 ES 8501934A1
Authority
ES
Spain
Prior art keywords
frequency signals
analog
digital signal
unmasked
signal apparatus
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
ES525407A
Other languages
English (en)
Other versions
ES525407A0 (es
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.)
Dolby Laboratories Licensing Corp
Original Assignee
Dolby Laboratories 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 Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Publication of ES8501934A1 publication Critical patent/ES8501934A1/es
Publication of ES525407A0 publication Critical patent/ES525407A0/es
Granted legal-status Critical Current

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)

Abstract

DISPOSITIVO DE CONVERSION DE DIGITAL A ANALOGICO DE AUDIO.CONSTA DE ELEMENTOS (2) DE CONVERSION DE DIGITAL A ANALOGICO DE MODULACION DIFERENCIAL DE ADAPTACION, ELEMENTOS (4) DE RESPUESRA VARIABLE DEPENDIENTE DE LA FRECUENCIA PARA TRATAR SEN/ALES DE AUDIO ANALOGICAS DERIVADAS DE LOS ELEMENTOS DE CONVERSION (2), TENIENDO LOS ELEMENTOS DE RESPUESTA VARIABLE CARACTERISTICAS QUE CORTAN, CON RELACION A OTRAS PARTES DEL ESPECTRO DE AUDIO, SEN/ALES EN LA PARTE INFERIOR DEL ESPECTRO DE AUDIO, AUMENTANDO EL GRADO DE CORTE AL CRECER LA PENDIENTE DE LA AMPLITUD DE COMPONENTES DE SEN/AL EN LA PARTE SUPERIOR DEL ESPECTRO DE AUDIO; Y ELEMENTOS (6) DE TRATAMIENTO. LOS ELEMENTOS DE RESPUESTA VARIABLE INCLUYEN ELEMENTOS PARA GENERAR UNA SEN/AL DE CONTROL DERIVADA DE LAS SEN/ALES DE AUDIO ANALOGICAS QUE CONTROLA EL GRADO DE CORTE.
ES525407A 1982-09-07 1983-09-06 Un dispositivo de conversion de analogico a digital de audio Granted ES525407A0 (es)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
ES8501934A1 true ES8501934A1 (es) 1984-12-01
ES525407A0 ES525407A0 (es) 1984-12-01

Family

ID=23644058

Family Applications (1)

Application Number Title Priority Date Filing Date
ES525407A Granted ES525407A0 (es) 1982-09-07 1983-09-06 Un dispositivo de conversion de analogico a digital de audio

Country Status (14)

Country Link
US (1) US4507791A (es)
JP (1) JPS5972225A (es)
KR (1) KR910006441B1 (es)
AT (1) AT389962B (es)
BE (1) BE897704A (es)
BR (1) BR8304852A (es)
CA (1) CA1212776A (es)
CH (1) CH666586A5 (es)
DE (1) DE3331231A1 (es)
DK (1) DK405383A (es)
ES (1) ES525407A0 (es)
FR (1) FR2532801B1 (es)
GB (1) GB2127638B (es)
NL (1) NL8303035A (es)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU572555B2 (en) * 1983-10-07 1988-05-12 Dolby Laboratories Licensing Corporation Spectral preemphasis/deemphasis
US4700361A (en) * 1983-10-07 1987-10-13 Dolby Laboratories Licensing Corporation Spectral emphasis and de-emphasis
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
US5124706A (en) * 1989-09-15 1992-06-23 Wavephore, Inc. Analog to digital and digital to analog signal processors
US5021786A (en) * 1989-09-15 1991-06-04 Gerdes Richard C 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
WO2003019934A1 (en) * 2001-08-23 2003-03-06 Thomson Licensing S.A. Adaptive bandwidth control in a kinescope amplifier
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
JP5528358B2 (ja) * 2008-03-10 2014-06-25 ニューランズ・インコーポレーテッド 広帯域信号処理の方法、システムおよび装置
CN102835027B (zh) 2010-02-12 2016-05-25 斯佩罗设备有限公司 宽带模拟射频元件
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 (en) 2010-11-01 2012-05-10 Newlans, Inc. Method and apparatus for power amplifier linearization
WO2012064551A2 (en) 2010-11-08 2012-05-18 Newlans, Inc. Field programmable analog array
CN103959726A (zh) 2011-11-01 2014-07-30 纽兰斯公司 宽带信号处理
EP2880762A4 (en) 2012-09-05 2016-03-30 Spero Devices Inc BIQUADRATIC CALIBRATION
US20170126196A1 (en) * 2015-11-02 2017-05-04 Ess Technology, Inc. Low Noise Audio Rendering Circuit
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
GB2127638A (en) 1984-04-11
BR8304852A (pt) 1984-04-24
AT389962B (de) 1990-02-26
DE3331231A1 (de) 1984-03-08
KR840006109A (ko) 1984-11-21
FR2532801A1 (fr) 1984-03-09
DK405383D0 (da) 1983-09-06
CH666586A5 (de) 1988-07-29
CA1212776A (en) 1986-10-14
ATA313483A (de) 1989-07-15
FR2532801B1 (fr) 1987-07-17
GB8323263D0 (en) 1983-09-28
KR910006441B1 (ko) 1991-08-24
BE897704A (fr) 1984-01-02
JPS5972225A (ja) 1984-04-24
US4507791A (en) 1985-03-26
GB2127638B (en) 1986-07-30
DK405383A (da) 1984-03-08
NL8303035A (nl) 1984-04-02
ES525407A0 (es) 1984-12-01

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19960603