FR3088787B1 - Procédé de démodulation d’un signal stéréophonique - Google Patents
Procédé de démodulation d’un signal stéréophonique Download PDFInfo
- Publication number
- FR3088787B1 FR3088787B1 FR1871682A FR1871682A FR3088787B1 FR 3088787 B1 FR3088787 B1 FR 3088787B1 FR 1871682 A FR1871682 A FR 1871682A FR 1871682 A FR1871682 A FR 1871682A FR 3088787 B1 FR3088787 B1 FR 3088787B1
- Authority
- FR
- France
- Prior art keywords
- signal
- demodulating
- called
- stereophonic signal
- stereophonic
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1646—Circuits adapted for the reception of stereophonic signals
- H04B1/1653—Detection of the presence of stereo signals and pilot signal regeneration
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1646—Circuits adapted for the reception of stereophonic signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1646—Circuits adapted for the reception of stereophonic signals
- H04B1/1661—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels
- H04B1/1669—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal
- H04B1/1676—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal of the sum or difference signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
- H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
- H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
- H04H40/45—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Stereo-Broadcasting Methods (AREA)
Abstract
L’invention a pour objet un procédé de démodulation d’un signal stéréophonique multiplexé (S(f)), le signal comprenant un signal, dit signal somme (G+D), un signal, dit signal différence (G-D), et un signal pilote, le procédé comprenant les étapes suivantes : éliminer la fréquence pilote du signal stéréophonique multiplexé (S(f)), le signal résultant étant appelé signal sans pilote (S2(f)), et soustraire du signal sans pilote (S2(f)) le signal somme (G+D).Figure de l’abrégé : figure 2
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1871682A FR3088787B1 (fr) | 2018-11-21 | 2018-11-21 | Procédé de démodulation d’un signal stéréophonique |
US17/289,045 US11595068B2 (en) | 2018-11-21 | 2019-11-21 | Method of demodulation of a stereophonic signal |
PCT/EP2019/082123 WO2020104603A1 (fr) | 2018-11-21 | 2019-11-21 | Procédé de démodulation d'un signal stéréophonique |
CN201980076529.2A CN112997410B (zh) | 2018-11-21 | 2019-11-21 | 立体声信号的解调方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1871682A FR3088787B1 (fr) | 2018-11-21 | 2018-11-21 | Procédé de démodulation d’un signal stéréophonique |
Publications (2)
Publication Number | Publication Date |
---|---|
FR3088787A1 FR3088787A1 (fr) | 2020-05-22 |
FR3088787B1 true FR3088787B1 (fr) | 2020-11-13 |
Family
ID=66776401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1871682A Active FR3088787B1 (fr) | 2018-11-21 | 2018-11-21 | Procédé de démodulation d’un signal stéréophonique |
Country Status (4)
Country | Link |
---|---|
US (1) | US11595068B2 (fr) |
CN (1) | CN112997410B (fr) |
FR (1) | FR3088787B1 (fr) |
WO (1) | WO2020104603A1 (fr) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL174312C (nl) * | 1978-05-17 | 1984-05-16 | Philips Nv | Stereodecoder met 19khz-piloot onderdrukking en verbeterende oscillatie-fase-vergrendeling. |
JPS5853805B2 (ja) * | 1979-02-15 | 1983-12-01 | 日本ビクター株式会社 | パイロット信号の除去装置 |
JP2757377B2 (ja) * | 1988-06-28 | 1998-05-25 | ソニー株式会社 | ステレオ復調回路 |
US4932058A (en) * | 1989-08-14 | 1990-06-05 | Delco Electronics Corporation | Pilot cancellation circuit |
US5357574A (en) * | 1992-12-14 | 1994-10-18 | Ford Motor Company | Coherent signal generation in digital radio receiver |
JP2006508571A (ja) * | 2002-11-19 | 2006-03-09 | ケーブル エレクトロニクス インコーポレーテッド | Mts信号のデジタル復号化方法およびシステム |
US8774416B2 (en) * | 2002-11-19 | 2014-07-08 | Nxp, B.V. | Receiver |
US7406302B1 (en) * | 2003-12-15 | 2008-07-29 | Marvell International, Inc. | Digital FM stereo receiver architecture |
-
2018
- 2018-11-21 FR FR1871682A patent/FR3088787B1/fr active Active
-
2019
- 2019-11-21 US US17/289,045 patent/US11595068B2/en active Active
- 2019-11-21 CN CN201980076529.2A patent/CN112997410B/zh active Active
- 2019-11-21 WO PCT/EP2019/082123 patent/WO2020104603A1/fr active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN112997410B (zh) | 2022-11-01 |
WO2020104603A1 (fr) | 2020-05-28 |
US20210409054A1 (en) | 2021-12-30 |
FR3088787A1 (fr) | 2020-05-22 |
US11595068B2 (en) | 2023-02-28 |
CN112997410A (zh) | 2021-06-18 |
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