CA1110548A - Circuit for suppressing noise caused by scratches on a gramophone record - Google Patents
Circuit for suppressing noise caused by scratches on a gramophone recordInfo
- Publication number
- CA1110548A CA1110548A CA314,371A CA314371A CA1110548A CA 1110548 A CA1110548 A CA 1110548A CA 314371 A CA314371 A CA 314371A CA 1110548 A CA1110548 A CA 1110548A
- Authority
- CA
- Canada
- Prior art keywords
- noise
- circuit
- signal
- output
- time
- 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
Links
- 239000003990 capacitor Substances 0.000 claims description 5
- 208000002925 dental caries Diseases 0.000 claims 1
- 230000005236 sound signal Effects 0.000 abstract description 4
- 150000002500 ions Chemical class 0.000 description 14
- 101150087426 Gnal gene Proteins 0.000 description 8
- 230000001629 suppression Effects 0.000 description 8
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 4
- 201000006747 infectious mononucleosis Diseases 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000009499 grossing Methods 0.000 description 3
- 241000283984 Rodentia Species 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000003389 potentiating effect Effects 0.000 description 2
- QHGVXILFMXYDRS-UHFFFAOYSA-N pyraclofos Chemical compound C1=C(OP(=O)(OCC)SCCC)C=NN1C1=CC=C(Cl)C=C1 QHGVXILFMXYDRS-UHFFFAOYSA-N 0.000 description 2
- 208000006379 syphilis Diseases 0.000 description 2
- 101150097308 ARD1 gene Proteins 0.000 description 1
- 102100038740 Activator of RNA decay Human genes 0.000 description 1
- 101150059057 BET1 gene Proteins 0.000 description 1
- 101100379067 Caenorhabditis elegans anc-1 gene Proteins 0.000 description 1
- 101100087530 Caenorhabditis elegans rom-1 gene Proteins 0.000 description 1
- 101100422770 Caenorhabditis elegans sup-1 gene Proteins 0.000 description 1
- 241000272470 Circus Species 0.000 description 1
- JFIXKFSJCQNGEK-UHFFFAOYSA-N Coumafuryl Chemical compound OC=1C2=CC=CC=C2OC(=O)C=1C(CC(=O)C)C1=CC=CO1 JFIXKFSJCQNGEK-UHFFFAOYSA-N 0.000 description 1
- 101100122876 Dictyostelium discoideum grlE gene Proteins 0.000 description 1
- 101100270214 Dictyostelium discoideum natA gene Proteins 0.000 description 1
- 101100536354 Drosophila melanogaster tant gene Proteins 0.000 description 1
- 244000228957 Ferula foetida Species 0.000 description 1
- 241001200438 Kheper Species 0.000 description 1
- 125000000205 L-threonino group Chemical group [H]OC(=O)[C@@]([H])(N([H])[*])[C@](C([H])([H])[H])([H])O[H] 0.000 description 1
- 241001435619 Lile Species 0.000 description 1
- 244000278455 Morus laevigata Species 0.000 description 1
- 235000013382 Morus laevigata Nutrition 0.000 description 1
- 101100305983 Mus musculus Rom1 gene Proteins 0.000 description 1
- 240000008881 Oenanthe javanica Species 0.000 description 1
- 101100005038 Penicillium decumbens calJ gene Proteins 0.000 description 1
- 241000053227 Themus Species 0.000 description 1
- 241000153282 Theope Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 229940035564 duration Drugs 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 235000013570 smoothie Nutrition 0.000 description 1
- HODRFAVLXIFVTR-RKDXNWHRSA-N tevenel Chemical compound NS(=O)(=O)C1=CC=C([C@@H](O)[C@@H](CO)NC(=O)C(Cl)Cl)C=C1 HODRFAVLXIFVTR-RKDXNWHRSA-N 0.000 description 1
- VLPFTAMPNXLGLX-UHFFFAOYSA-N trioctanoin Chemical compound CCCCCCCC(=O)OCC(OC(=O)CCCCCCC)COC(=O)CCCCCCC VLPFTAMPNXLGLX-UHFFFAOYSA-N 0.000 description 1
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)
- Confectionery (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7712534A NL7712534A (nl) | 1977-11-15 | 1977-11-15 | Schakeling voor het onderdrukken van storingen tengevolge van krassen in een grammofoonplaat. |
| NL7712534 | 1977-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1110548A true CA1110548A (en) | 1981-10-13 |
Family
ID=19829537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA314,371A Expired CA1110548A (en) | 1977-11-15 | 1978-10-26 | Circuit for suppressing noise caused by scratches on a gramophone record |
Country Status (15)
| Country | Link |
|---|---|
| JP (1) | JPS5479002A (xx) |
| AR (1) | AR216346A1 (xx) |
| AT (1) | AT357780B (xx) |
| BE (1) | BE871969A (xx) |
| BR (1) | BR7807453A (xx) |
| CA (1) | CA1110548A (xx) |
| DE (1) | DE2849375A1 (xx) |
| ES (1) | ES475021A1 (xx) |
| FR (1) | FR2408965A1 (xx) |
| GB (1) | GB2007945B (xx) |
| HK (1) | HK33882A (xx) |
| IT (1) | IT1101046B (xx) |
| MX (1) | MX147638A (xx) |
| NL (1) | NL7712534A (xx) |
| SE (1) | SE7811667L (xx) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2916127C2 (de) * | 1978-04-21 | 1984-03-22 | Nippon Telegraph & Telephone Public Corp., Tokyo | Einrichtung zur Unterdrückung vorübergehend auftretender Störgeräusche |
| DE3016779C2 (de) * | 1980-04-30 | 1986-09-18 | Siemens AG, 1000 Berlin und 8000 München | Knackschutz für die digitale Tonprogrammübertragung |
| DE3212615C2 (de) * | 1982-04-05 | 1984-09-06 | Bayerische Motoren Werke AG, 8000 München | Verfahren zum Umschalten der Wiedergabe eines Rundfunksignals auf ein anderes Rundfunksignal und Schaltungsanordnung zur Durchführung des Verfahrens |
| NL8402322A (nl) * | 1984-07-23 | 1986-02-17 | Philips Nv | Inrichting voor het detekteren van impulsachtige storingen, en een inrichting voor het onderdrukken van impulsachtige storingen voorzien van een inrichting voor het detekteren van impulsachtige storingen. |
-
1977
- 1977-11-15 NL NL7712534A patent/NL7712534A/xx not_active Application Discontinuation
-
1978
- 1978-10-12 AR AR274059A patent/AR216346A1/es active
- 1978-10-26 CA CA314,371A patent/CA1110548A/en not_active Expired
- 1978-11-10 GB GB7844030A patent/GB2007945B/en not_active Expired
- 1978-11-10 IT IT29694/78A patent/IT1101046B/it active
- 1978-11-10 MX MX175572A patent/MX147638A/es unknown
- 1978-11-13 BE BE191692A patent/BE871969A/xx unknown
- 1978-11-13 FR FR7831985A patent/FR2408965A1/fr not_active Withdrawn
- 1978-11-13 ES ES475021A patent/ES475021A1/es not_active Expired
- 1978-11-13 AT AT811878A patent/AT357780B/de active
- 1978-11-13 BR BR7807453A patent/BR7807453A/pt unknown
- 1978-11-13 SE SE7811667A patent/SE7811667L/xx unknown
- 1978-11-14 DE DE19782849375 patent/DE2849375A1/de not_active Withdrawn
- 1978-11-15 JP JP14171078A patent/JPS5479002A/ja active Pending
-
1982
- 1982-07-22 HK HK338/82A patent/HK33882A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE7811667L (sv) | 1979-05-16 |
| AR216346A1 (es) | 1979-12-14 |
| DE2849375A1 (de) | 1979-05-17 |
| IT1101046B (it) | 1985-09-28 |
| GB2007945A (en) | 1979-05-23 |
| NL7712534A (nl) | 1979-05-17 |
| ES475021A1 (es) | 1979-04-16 |
| JPS5479002A (en) | 1979-06-23 |
| GB2007945B (en) | 1982-05-06 |
| ATA811878A (de) | 1979-12-15 |
| IT7829694A0 (it) | 1978-11-10 |
| HK33882A (en) | 1982-07-30 |
| MX147638A (es) | 1982-12-24 |
| BE871969A (fr) | 1979-05-14 |
| AT357780B (de) | 1980-07-25 |
| BR7807453A (pt) | 1979-07-17 |
| FR2408965A1 (fr) | 1979-06-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |