FR2499334A1 - Dispositif de commande de caracteristiques pour un egalisateur numerique - Google Patents
Dispositif de commande de caracteristiques pour un egalisateur numerique Download PDFInfo
- Publication number
- FR2499334A1 FR2499334A1 FR8201893A FR8201893A FR2499334A1 FR 2499334 A1 FR2499334 A1 FR 2499334A1 FR 8201893 A FR8201893 A FR 8201893A FR 8201893 A FR8201893 A FR 8201893A FR 2499334 A1 FR2499334 A1 FR 2499334A1
- Authority
- FR
- France
- Prior art keywords
- digital
- signal
- characteristic
- circuit
- memory
- 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.)
- Granted
Links
- 230000008859 change Effects 0.000 claims abstract description 27
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000012549 training Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 description 20
- 239000000543 intermediate Substances 0.000 description 10
- 238000005070 sampling Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/027—Analogue recording
- G11B5/035—Equalising
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/005—Tone control or bandwidth control in amplifiers of digital signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/02—Manually-operated control
- H03G5/025—Equalizers; Volume or gain control in limited frequency bands
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03114—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals
- H04L25/03146—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals with a recursive structure
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1434481U JPS57128239U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1981-02-05 | 1981-02-05 | |
| JP1493881A JPS57129515A (en) | 1981-02-05 | 1981-02-05 | Digital equalizer |
| JP2784481A JPS57142021A (en) | 1981-02-27 | 1981-02-27 | Characteristic controlling system for digital equalizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2499334A1 true FR2499334A1 (fr) | 1982-08-06 |
| FR2499334B1 FR2499334B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1984-12-21 |
Family
ID=27280601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8201893A Granted FR2499334A1 (fr) | 1981-02-05 | 1982-02-05 | Dispositif de commande de caracteristiques pour un egalisateur numerique |
Country Status (5)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0219865A3 (en) * | 1985-10-23 | 1989-06-21 | Matsushita Electric Industrial Co., Ltd. | Apparatus and method for controlling tone quality |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6661900B1 (en) * | 1998-09-30 | 2003-12-09 | Texas Instruments Incorporated | Digital graphic equalizer control system and method |
| US7096081B2 (en) * | 2002-03-01 | 2006-08-22 | Visteon Global Technologies, Inc. | Method of implementing a variable number of filter sections for digital signal processing |
| CN106559056B (zh) * | 2015-09-25 | 2019-05-07 | 电信科学技术研究院 | 参数处理方法、音频信号播放方法、装置及音频均衡器 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3882540A (en) * | 1974-06-17 | 1975-05-06 | Ibm | Readback circuits for digital signal recorders |
| US4081756A (en) * | 1976-12-30 | 1978-03-28 | Sperry Rand Corporation | Dual channel signal detector circuit |
| FR2451667A1 (fr) * | 1979-03-16 | 1980-10-10 | Koninkl Philips Electronics Nv | Filtre a autoreglage comportant un circuit a retard |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2933004C2 (de) * | 1978-08-16 | 1984-03-15 | Hitachi, Ltd., Tokyo | Tonbandgerät mit verbesserter Frequenzgangentzerrung |
| US4321685A (en) * | 1978-11-20 | 1982-03-23 | Masao Kasuga | Circuit for reducing the limit cycle in a digital filter |
| GB2056821B (en) * | 1979-06-25 | 1983-10-12 | Matsushita Electric Ind Co Ltd | Digital filter |
| US4334313A (en) * | 1980-09-08 | 1982-06-08 | Bell Telephone Laboratories, Incorporated | Timing recovery technique |
| US4351060A (en) * | 1980-10-23 | 1982-09-21 | International Telephone And Telegraph Corporation | Automatic, digitally synthesized matching line terminating impedance |
| US4361892A (en) * | 1980-11-03 | 1982-11-30 | Bell Telephone Laboratories, Incorporated | Adaptive equalizer |
-
1982
- 1982-02-03 US US06/345,459 patent/US4453255A/en not_active Expired - Fee Related
- 1982-02-05 DE DE19823203910 patent/DE3203910A1/de active Granted
- 1982-02-05 NL NLAANVRAGE8200453,A patent/NL186670C/xx not_active IP Right Cessation
- 1982-02-05 GB GB8203315A patent/GB2096432B/en not_active Expired
- 1982-02-05 FR FR8201893A patent/FR2499334A1/fr active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3882540A (en) * | 1974-06-17 | 1975-05-06 | Ibm | Readback circuits for digital signal recorders |
| US4081756A (en) * | 1976-12-30 | 1978-03-28 | Sperry Rand Corporation | Dual channel signal detector circuit |
| FR2451667A1 (fr) * | 1979-03-16 | 1980-10-10 | Koninkl Philips Electronics Nv | Filtre a autoreglage comportant un circuit a retard |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0219865A3 (en) * | 1985-10-23 | 1989-06-21 | Matsushita Electric Industrial Co., Ltd. | Apparatus and method for controlling tone quality |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2096432B (en) | 1985-01-30 |
| NL186670C (nl) | 1991-01-16 |
| DE3203910A1 (de) | 1982-10-14 |
| FR2499334B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1984-12-21 |
| NL186670B (nl) | 1990-08-16 |
| US4453255A (en) | 1984-06-05 |
| GB2096432A (en) | 1982-10-13 |
| NL8200453A (nl) | 1982-09-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |