MX147638A - IMPROVEMENTS IN CIRCUIT TO SUPPRESS AUDIO FREQUENCY NOISE IN A SIGNAL ORIGINATING FROM A GRAMOPHONE DISC - Google Patents

IMPROVEMENTS IN CIRCUIT TO SUPPRESS AUDIO FREQUENCY NOISE IN A SIGNAL ORIGINATING FROM A GRAMOPHONE DISC

Info

Publication number
MX147638A
MX147638A MX175572A MX17557278A MX147638A MX 147638 A MX147638 A MX 147638A MX 175572 A MX175572 A MX 175572A MX 17557278 A MX17557278 A MX 17557278A MX 147638 A MX147638 A MX 147638A
Authority
MX
Mexico
Prior art keywords
circuit
audio frequency
frequency noise
signal originating
suppress audio
Prior art date
Application number
MX175572A
Other languages
Spanish (es)
Inventor
Bernhard Heinrich Pee Johannes
Machiel Schmidt Johan
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
Publication of MX147638A publication Critical patent/MX147638A/en

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
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • 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
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/345—Muting during a short period of time when noise pulses are detected, i.e. blanking

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Confectionery (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
MX175572A 1977-11-15 1978-11-10 IMPROVEMENTS IN CIRCUIT TO SUPPRESS AUDIO FREQUENCY NOISE IN A SIGNAL ORIGINATING FROM A GRAMOPHONE DISC MX147638A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7712534A NL7712534A (en) 1977-11-15 1977-11-15 CIRCUIT FOR SUPPRESSING FAULTS DUE TO SCRATCHES IN A GRAMOPHONE DISC.

Publications (1)

Publication Number Publication Date
MX147638A true MX147638A (en) 1982-12-24

Family

ID=19829537

Family Applications (1)

Application Number Title Priority Date Filing Date
MX175572A MX147638A (en) 1977-11-15 1978-11-10 IMPROVEMENTS IN CIRCUIT TO SUPPRESS AUDIO FREQUENCY NOISE IN A SIGNAL ORIGINATING FROM A GRAMOPHONE DISC

Country Status (15)

Country Link
JP (1) JPS5479002A (en)
AR (1) AR216346A1 (en)
AT (1) AT357780B (en)
BE (1) BE871969A (en)
BR (1) BR7807453A (en)
CA (1) CA1110548A (en)
DE (1) DE2849375A1 (en)
ES (1) ES475021A1 (en)
FR (1) FR2408965A1 (en)
GB (1) GB2007945B (en)
HK (1) HK33882A (en)
IT (1) IT1101046B (en)
MX (1) MX147638A (en)
NL (1) NL7712534A (en)
SE (1) SE7811667L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2916127C2 (en) * 1978-04-21 1984-03-22 Nippon Telegraph & Telephone Public Corp., Tokyo Device for the suppression of temporarily occurring interfering noises
DE3016779C2 (en) * 1980-04-30 1986-09-18 Siemens AG, 1000 Berlin und 8000 München Click protection for digital audio program transmission
DE3212615C2 (en) * 1982-04-05 1984-09-06 Bayerische Motoren Werke AG, 8000 München Method for switching the reproduction of a broadcast signal to another broadcast signal and circuit arrangement for carrying out the method
NL8402322A (en) * 1984-07-23 1986-02-17 Philips Nv DEVICE FOR DETECTING IMPULSE INTERFERENCES, AND A DEVICE FOR SUPPRESSING IMPULSE INTERFERENCES, INCLUDING DEVICE FOR DETECTING IMPULSE INTERFERENCES.

Also Published As

Publication number Publication date
FR2408965A1 (en) 1979-06-08
NL7712534A (en) 1979-05-17
SE7811667L (en) 1979-05-16
IT1101046B (en) 1985-09-28
GB2007945B (en) 1982-05-06
ATA811878A (en) 1979-12-15
GB2007945A (en) 1979-05-23
BR7807453A (en) 1979-07-17
AT357780B (en) 1980-07-25
BE871969A (en) 1979-05-14
CA1110548A (en) 1981-10-13
HK33882A (en) 1982-07-30
IT7829694A0 (en) 1978-11-10
JPS5479002A (en) 1979-06-23
ES475021A1 (en) 1979-04-16
DE2849375A1 (en) 1979-05-17
AR216346A1 (en) 1979-12-14

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