IT985033B - Circuito di comando per un sistema di trasmissioni di segnali a riduzione di rumore - Google Patents

Circuito di comando per un sistema di trasmissioni di segnali a riduzione di rumore

Info

Publication number
IT985033B
IT985033B IT49947/73A IT4994773A IT985033B IT 985033 B IT985033 B IT 985033B IT 49947/73 A IT49947/73 A IT 49947/73A IT 4994773 A IT4994773 A IT 4994773A IT 985033 B IT985033 B IT 985033B
Authority
IT
Italy
Prior art keywords
noise
control circuit
signal transmission
transmission system
reducing signal
Prior art date
Application number
IT49947/73A
Other languages
English (en)
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of IT985033B publication Critical patent/IT985033B/it

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/002—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers
    • H03G7/004—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers using continuously variable impedance devices
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0007—Circuits or methods for reducing noise, for correction of distortion, or for changing density of recorded information
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/18—Automatic control in untuned amplifiers
    • H03G5/22—Automatic control in untuned amplifiers having semiconductor devices
    • 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
    • H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
    • H03G9/18—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for tone control and volume expansion or compression

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Networks Using Active Elements (AREA)
IT49947/73A 1972-05-13 1973-05-14 Circuito di comando per un sistema di trasmissioni di segnali a riduzione di rumore IT985033B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972056182U JPS574492Y2 (it) 1972-05-13 1972-05-13

Publications (1)

Publication Number Publication Date
IT985033B true IT985033B (it) 1974-11-30

Family

ID=13019951

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49947/73A IT985033B (it) 1972-05-13 1973-05-14 Circuito di comando per un sistema di trasmissioni di segnali a riduzione di rumore

Country Status (11)

Country Link
US (1) US3946249A (it)
JP (1) JPS574492Y2 (it)
AT (1) AT347713B (it)
CA (1) CA1003508A (it)
CH (1) CH563692A5 (it)
DE (1) DE2323937A1 (it)
FR (1) FR2198313B1 (it)
GB (1) GB1412702A (it)
IT (1) IT985033B (it)
NL (1) NL7306700A (it)
SE (1) SE395579B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5948447B2 (ja) * 1977-07-20 1984-11-27 ソニー株式会社 信号再生装置の利得補償回路
GB2002204B (en) * 1977-08-06 1982-01-27 Licentia Gmbh Dynamic compression or expansion circuits
JPS60214617A (ja) * 1984-04-11 1985-10-26 Hitachi Ltd フイルタ集積回路
US5023491A (en) * 1988-01-18 1991-06-11 Nec Corporation Filter circuit arrangements with automatic adjustment of cut-off frequencies
JPH0724501Y2 (ja) * 1988-06-13 1995-06-05 株式会社不動テクニカル 折板屋根
EP0583492B1 (en) * 1992-07-31 1998-11-25 Aphex Systems, Ltd. Audio signal bass frequency enhancement device
DE10124699C1 (de) * 2001-05-18 2002-12-19 Micronas Gmbh Schaltungsanordnung zur Verbesserung der Verständlichkeit von Sprache enthaltenden Audiosignalen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580020A (en) * 1948-01-06 1951-12-25 Jr John Hays Hammond Volume expander with timing control
US2678387A (en) * 1950-04-11 1954-05-11 Rca Corp Tone converter
US2972677A (en) * 1957-12-04 1961-02-21 Itt Interference detecting circuit
US3151299A (en) * 1962-02-08 1964-09-29 Dynamics Corp America Disabling circuit for controlling the output in accordance with frequency and amplitude of the input
US3289007A (en) * 1962-12-28 1966-11-29 Bell Telephone Labor Inc Signal rectifier utilizing opposite conductivity transistors
US3238383A (en) * 1963-05-31 1966-03-01 Barnes Eng Co Ripple-free synchronous demodulator circuit
NL6507228A (it) * 1964-06-10 1965-12-13
DE1220483B (de) * 1964-11-30 1966-07-07 Siemens Ag Schaltungsanordnung fuer geregelte Verstaerker
CH501338A (fr) * 1968-12-26 1970-12-31 Kudelski Stefan Compresseur de volume d'un signal électrique
DE1915511A1 (de) * 1969-03-26 1970-10-08 Graetz Kg Automatische Aussteuerungsregelung fuer Tonbandgeraete

Also Published As

Publication number Publication date
CA1003508A (en) 1977-01-11
FR2198313A1 (it) 1974-03-29
JPS4914419U (it) 1974-02-06
AT347713B (de) 1979-01-10
SE395579B (sv) 1977-08-15
GB1412702A (en) 1975-11-05
ATA422073A (de) 1978-05-15
JPS574492Y2 (it) 1982-01-27
DE2323937C2 (it) 1987-06-11
DE2323937A1 (de) 1973-11-22
CH563692A5 (it) 1975-06-30
NL7306700A (it) 1973-11-15
FR2198313B1 (it) 1976-03-05
AU5568273A (en) 1974-11-14
US3946249A (en) 1976-03-23

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