IE52495B1 - Improvements in circuit arrangements for modifying dynamic range - Google Patents
Improvements in circuit arrangements for modifying dynamic rangeInfo
- Publication number
- IE52495B1 IE52495B1 IE2951/81A IE295181A IE52495B1 IE 52495 B1 IE52495 B1 IE 52495B1 IE 2951/81 A IE2951/81 A IE 2951/81A IE 295181 A IE295181 A IE 295181A IE 52495 B1 IE52495 B1 IE 52495B1
- Authority
- IE
- Ireland
- Prior art keywords
- signal
- circuit
- band
- frequency
- signals
- Prior art date
Links
- 230000006872 improvement Effects 0.000 title description 4
- 238000009499 grossing Methods 0.000 claims abstract description 26
- 230000000694 effects Effects 0.000 claims description 58
- 230000006835 compression Effects 0.000 claims description 35
- 238000007906 compression Methods 0.000 claims description 35
- 230000009471 action Effects 0.000 claims description 34
- 230000004048 modification Effects 0.000 claims description 24
- 238000012986 modification Methods 0.000 claims description 24
- 230000000750 progressive effect Effects 0.000 claims description 11
- 230000001965 increasing effect Effects 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 230000005236 sound signal Effects 0.000 claims 4
- 230000004044 response Effects 0.000 abstract description 29
- 230000009467 reduction Effects 0.000 abstract description 20
- 230000000670 limiting effect Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 13
- 230000000295 complement effect Effects 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 11
- 239000000523 sample Substances 0.000 description 11
- 230000009977 dual effect Effects 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 238000001914 filtration Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 238000001228 spectrum Methods 0.000 description 6
- 230000001419 dependent effect Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000007792 addition Methods 0.000 description 3
- 230000036039 immunity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 208000019300 CLIPPERS Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 208000021930 chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids Diseases 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000000499 effect on compression Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
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- 230000000873 masking effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G7/00—Volume compression or expansion in amplifiers
- H03G7/06—Volume compression or expansion in amplifiers having semiconductor devices
- H03G7/08—Volume compression or expansion in amplifiers having semiconductor devices incorporating negative feedback
-
- 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
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/325,530 US4498055A (en) | 1981-09-10 | 1981-12-01 | Circuit arrangements for modifying dynamic range |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE812951L IE812951L (en) | 1983-06-01 |
| IE52495B1 true IE52495B1 (en) | 1987-11-25 |
Family
ID=23268273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE2951/81A IE52495B1 (en) | 1981-12-01 | 1981-12-15 | Improvements in circuit arrangements for modifying dynamic range |
Country Status (15)
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4922535A (en) * | 1986-03-03 | 1990-05-01 | Dolby Ray Milton | Transient control aspects of circuit arrangements for altering the dynamic range of audio signals |
| CA1269138A (en) * | 1986-03-03 | 1990-05-15 | Ray Milton Dolby | Attenuator circuit employing bootstrapping |
| JP2764205B2 (ja) * | 1986-03-03 | 1998-06-11 | レ−・ミルトン・ドルビ | ブートストラップ信号減衰回路 |
| GB2429779A (en) * | 2005-09-01 | 2007-03-07 | Geo Kingsbury Machine Tools Lt | Testing components of drive trains |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1120541A (en) * | 1965-08-11 | 1968-07-17 | Dolby Ray Milton | Improvements in noise reduction systems |
| BE753495A (fr) * | 1969-07-21 | 1970-12-16 | Dolby Laboratories Inc | Filtres limiteurs perfectionnes pour systemes attenuateurs de bruit. ( |
| US3795876A (en) * | 1971-04-06 | 1974-03-05 | Victor Company Of Japan | Compression and/or expansion system and circuit |
| US4101849A (en) * | 1976-11-08 | 1978-07-18 | Dbx, Inc. | Adaptive filter |
| BE889427A (fr) * | 1980-06-30 | 1981-10-16 | Dolby Ray Milton | Circuit de suppression des effets de modulation dans des compresseurs, des expanseurs et des dispositifs de reduction des bruits |
-
1981
- 1981-12-09 GB GB08137167A patent/GB2111355B/en not_active Expired
- 1981-12-11 CA CA000392068A patent/CA1188996A/en not_active Expired
- 1981-12-15 IE IE2951/81A patent/IE52495B1/en not_active IP Right Cessation
- 1981-12-15 SE SE8107495A patent/SE449281B/sv not_active IP Right Cessation
- 1981-12-19 KR KR1019810005016A patent/KR900000483B1/ko not_active Expired
- 1981-12-22 CH CH8223/81A patent/CH656996A5/de not_active IP Right Cessation
- 1981-12-22 NL NL8105775A patent/NL192860C/nl not_active IP Right Cessation
- 1981-12-23 GR GR66897A patent/GR77317B/el unknown
- 1981-12-23 DE DE19813151137 patent/DE3151137A1/de active Granted
- 1981-12-23 DK DK575681A patent/DK575681A/da not_active Application Discontinuation
- 1981-12-24 LU LU83854A patent/LU83854A1/fr unknown
- 1981-12-28 FR FR8124314A patent/FR2517496B1/fr not_active Expired
- 1981-12-29 IT IT25877/81A patent/IT1140402B/it active
- 1981-12-29 ES ES508394A patent/ES508394A0/es active Granted
-
1985
- 1985-03-08 BE BE0/214626A patent/BE901906Q/fr not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DK575681A (da) | 1983-06-02 |
| DE3151137A1 (de) | 1983-07-14 |
| KR900000483B1 (ko) | 1990-01-30 |
| SE449281B (sv) | 1987-04-13 |
| CA1188996A (en) | 1985-06-18 |
| IE812951L (en) | 1983-06-01 |
| SE8107495L (sv) | 1983-06-02 |
| DE3151137C2 (enrdf_load_stackoverflow) | 1993-04-01 |
| FR2517496B1 (fr) | 1985-11-15 |
| ES8303848A1 (es) | 1983-02-01 |
| CH656996A5 (de) | 1986-07-31 |
| IT8125877A0 (it) | 1981-12-29 |
| NL192860B (nl) | 1997-11-03 |
| IT1140402B (it) | 1986-09-24 |
| ES508394A0 (es) | 1983-02-01 |
| NL192860C (nl) | 1998-03-04 |
| BE901906Q (fr) | 1985-07-01 |
| FR2517496A1 (fr) | 1983-06-03 |
| GB2111355A (en) | 1983-06-29 |
| NL8105775A (nl) | 1983-07-01 |
| LU83854A1 (fr) | 1982-05-07 |
| GR77317B (enrdf_load_stackoverflow) | 1984-09-11 |
| KR830008462A (ko) | 1983-11-18 |
| GB2111355B (en) | 1985-02-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK9A | Patent expired |