FR3061396B1 - MULTI-BAND LIMITING DEVICE AND AMPLIFIER COMPRISING SAME - Google Patents
MULTI-BAND LIMITING DEVICE AND AMPLIFIER COMPRISING SAME Download PDFInfo
- Publication number
- FR3061396B1 FR3061396B1 FR1663210A FR1663210A FR3061396B1 FR 3061396 B1 FR3061396 B1 FR 3061396B1 FR 1663210 A FR1663210 A FR 1663210A FR 1663210 A FR1663210 A FR 1663210A FR 3061396 B1 FR3061396 B1 FR 3061396B1
- Authority
- FR
- France
- Prior art keywords
- extraction filter
- frequency
- response
- limit value
- limiter
- 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
- 238000000605 extraction Methods 0.000 abstract 6
- 238000001514 detection method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/007—Protection circuits for transducers
-
- 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
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Amplifiers (AREA)
Abstract
Le dispositif limiteur multi-bandes (60), comporte : - au moins deux filtres (42, 44, 46) d'extraction de bande de fréquences, dont chaque courbe de réponse présente un coude, les courbes de réponse se croisant sensiblement à -6 dB, - au moins un filtre (43, 45) d'extraction de pic de fréquence, dont la valeur maximale de la courbe de réponse se situe au dessus du croisement des courbes de réponse de deux filtres d'extraction de bande de fréquences et - pour chaque filtre d'extraction de bande de fréquences : - un sommateur (47, 48, 49) configurer pour additionner le signal sortant dudit filtre d'extraction de bande de fréquences et d'au moins un filtre d'extraction de pic de fréquence, - un limiteur (53, 54, 55) à réponse non linéaire, dont la courbe de réponse présente une pente, au-delà d'une valeur limite prédéterminée, inférieure à la pente moyenne en-deçà de cette valeur limite, configuré pour recevoir le signal sortant dudit filtre d'extraction de bande et - un détecteur (50, 51, 52) configuré pour déclencher le limiteur lorsque la valeur efficace du signal sortant du sommateur est supérieure à une valeur limite de détection.The multi-band limiter device (60) comprises: - at least two filters (42, 44, 46) for extracting frequency bands, each response curve of which has an elbow, the response curves intersecting substantially at - 6 dB, - at least one frequency peak extraction filter (43, 45), the maximum value of the response curve of which lies above the crossing of the response curves of two frequency band extraction filters and - for each frequency band extraction filter: - an adder (47, 48, 49) configured to add the signal leaving said frequency band extraction filter and at least one peak extraction filter frequency, - a limiter (53, 54, 55) with non-linear response, the response curve of which has a slope, beyond a predetermined limit value, less than the average slope below this limit value, configured to receive the signal output from said band extraction filter and - a detector (50, 51, 52) configured to trigger the limiter when the effective value of the signal leaving the adder is greater than a detection limit value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1663210A FR3061396B1 (en) | 2016-12-22 | 2016-12-22 | MULTI-BAND LIMITING DEVICE AND AMPLIFIER COMPRISING SAME |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1663210 | 2016-12-22 | ||
| FR1663210A FR3061396B1 (en) | 2016-12-22 | 2016-12-22 | MULTI-BAND LIMITING DEVICE AND AMPLIFIER COMPRISING SAME |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3061396A1 FR3061396A1 (en) | 2018-06-29 |
| FR3061396B1 true FR3061396B1 (en) | 2020-02-21 |
Family
ID=58609540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1663210A Active FR3061396B1 (en) | 2016-12-22 | 2016-12-22 | MULTI-BAND LIMITING DEVICE AND AMPLIFIER COMPRISING SAME |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR3061396B1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8903109B2 (en) * | 2010-06-23 | 2014-12-02 | Stmicroelectronics, Inc. | Frequency domain multiband dynamics compressor with automatically adjusting frequency band boundary locations |
| JP6336830B2 (en) * | 2014-06-23 | 2018-06-06 | ローム株式会社 | Level adjustment circuit, digital sound processor, audio amplifier integrated circuit, electronic equipment, audio signal automatic level adjustment method |
| WO2016155853A1 (en) * | 2015-04-02 | 2016-10-06 | Harman Becker Automotive Systems Gmbh | Multii-band signal compressing |
-
2016
- 2016-12-22 FR FR1663210A patent/FR3061396B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3061396A1 (en) | 2018-06-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PLFP | Fee payment |
Year of fee payment: 2 |
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| PLSC | Publication of the preliminary search report |
Effective date: 20180629 |
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| PLFP | Fee payment |
Year of fee payment: 3 |
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| PLFP | Fee payment |
Year of fee payment: 4 |
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| PLFP | Fee payment |
Year of fee payment: 5 |
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| PLFP | Fee payment |
Year of fee payment: 6 |
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| PLFP | Fee payment |
Year of fee payment: 7 |
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| PLFP | Fee payment |
Year of fee payment: 8 |