FR3087609B1 - Procede de precorrection d'un signal sonore, procede de generation de son, unite de traitement et enceinte associes - Google Patents
Procede de precorrection d'un signal sonore, procede de generation de son, unite de traitement et enceinte associes Download PDFInfo
- Publication number
- FR3087609B1 FR3087609B1 FR1859597A FR1859597A FR3087609B1 FR 3087609 B1 FR3087609 B1 FR 3087609B1 FR 1859597 A FR1859597 A FR 1859597A FR 1859597 A FR1859597 A FR 1859597A FR 3087609 B1 FR3087609 B1 FR 3087609B1
- Authority
- FR
- France
- Prior art keywords
- signal
- sound
- sound signal
- processing unit
- precorrection
- 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
- 230000005236 sound signal Effects 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 3
- 238000001914 filtration 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2217/00—Details of magnetostrictive, piezoelectric, or electrostrictive transducers covered by H04R15/00 or H04R17/00 but not provided for in any of their subgroups
- H04R2217/03—Parametric transducers where sound is generated or captured by the acoustic demodulation of amplitude modulated ultrasonic waves
-
- 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
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
L'invention concerne un procédé de précorrection comprenant les étapes suivantes : a) déterminer un signal modulé initial (Smod) en fonction d'un signal (s) à restituer sous forme sonore, b2) déterminer un signal sonore prédit (spred), représentatif d'une onde sonore qui serait générée par auto-démodulation dans l'air d'une onde ultrasonore émise par un transducteur donné recevant en entrée le signal modulé initial, b3) déterminer un signal de distorsion (sdist) en fonction du signal sonore prédit et d'un signal sonore de référence (sref), et b4) corriger le signal modulé initial sur la base du signal de distorsion, le signal sonore prédit et le signal de sonore de référence étant déterminés en tenant compte du filtrage fréquentiel introduit par ledit transducteur. L'invention concerne également une unité de traitement et une enceinte associées.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1859597A FR3087609B1 (fr) | 2018-10-17 | 2018-10-17 | Procede de precorrection d'un signal sonore, procede de generation de son, unite de traitement et enceinte associes |
PCT/FR2019/052471 WO2020079378A1 (fr) | 2018-10-17 | 2019-10-17 | Procédé de précorrection d'un signal sonore, procédé de génération de son, unité de traitement et enceinte associés |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1859597A FR3087609B1 (fr) | 2018-10-17 | 2018-10-17 | Procede de precorrection d'un signal sonore, procede de generation de son, unite de traitement et enceinte associes |
Publications (2)
Publication Number | Publication Date |
---|---|
FR3087609A1 FR3087609A1 (fr) | 2020-04-24 |
FR3087609B1 true FR3087609B1 (fr) | 2020-11-13 |
Family
ID=65494356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1859597A Active FR3087609B1 (fr) | 2018-10-17 | 2018-10-17 | Procede de precorrection d'un signal sonore, procede de generation de son, unite de traitement et enceinte associes |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR3087609B1 (fr) |
WO (1) | WO2020079378A1 (fr) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6584205B1 (en) * | 1999-08-26 | 2003-06-24 | American Technology Corporation | Modulator processing for a parametric speaker system |
-
2018
- 2018-10-17 FR FR1859597A patent/FR3087609B1/fr active Active
-
2019
- 2019-10-17 WO PCT/FR2019/052471 patent/WO2020079378A1/fr active Application Filing
Also Published As
Publication number | Publication date |
---|---|
FR3087609A1 (fr) | 2020-04-24 |
WO2020079378A1 (fr) | 2020-04-23 |
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Effective date: 20200424 |
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