WO2024213555 - OPTIMIZED PROCESSING FOR REDUCING CHANNELS OF A STEREOPHONIC AUDIO SIGNAL
National phase entry:
Publication Number
WO/2024/213555
Publication Date
17.10.2024
International Application No.
PCT/EP2024/059645
International Filing Date
10.04.2024
Title **
[English]
OPTIMIZED PROCESSING FOR REDUCING CHANNELS OF A STEREOPHONIC AUDIO SIGNAL
[French]
TRAITEMENT OPTIMISÉ DE RÉDUCTION DE CANAUX D'UN SIGNAL AUDIO STÉRÉOPHONIQUE
Applicants **
ORANGE
Inventors
RAGOT, Stéphane
GUERIN, Alexandre
LEFORT, Arnaud
Priority Data
FR2303719
13.04.2023
FR
FR2304288
27.04.2023
FR
FR2305109
23.05.2023
FR
Application details
| Total Number of Claims/PCT | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2005 | |
| EPO | Filing, Examination, Granting | 8225 | |
| Japan | Filing, Examination, Granting | 2053 | |
| South Korea | Filing, Examination, Granting | 1845 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
18,868
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
The invention relates to a processing method for reducing channels of a stereophonic signal to obtain a monophonic signal, comprising the following: - application (610, 611), to a current frame of said signal, of two (T1 or T2, T3) channel-reducing processing operations, one of the processing operations using filtering with re-phasing on at least one of the channels of the stereophonic signal and the other processing operation not using filtering with re-phasing, - selection (612) of one of said processing operations to be applied to the current frame, said selection being implemented depending on: — the presence or absence of at least one transient in the stereophonic signal, or — a quality level of the filtering of the stereophonic signal used when implementing the processing operation using filtering of the stereophonic signal. The invention also relates to a processing device for reducing channels implementing the method.[French]
Traitement optimisé de réduction de canaux d'un signal audio stéréophonique L'invention se rapporte à un procédé de traitement de réduction de canaux d'un signal stéréophonique pour obtenir un signal monophonique, comprenant ce qui suit : - application (610, 611), à une trame courante dudit signal, de deux (Tl ou T2, T3) traitements de réduction de canaux, l'un des traitements utilisant un filtrage avec remise en phase sur au moins un des canaux du signal stéréophonique et l'autre traitement n'utilisant pas de filtrage avec remise en phase, - sélection (612) d'un desdits traitements à appliquer à la trame courante, ladite sélection étant mise en œuvre en fonction de : — la présence ou non d'au moins un transitoire dans le signal stéréophonique, ou — un niveau de qualité du filtrage du signal stéréophonique utilisé lors de la mise en œuvre du traitement utilisant le filtrage du signal stéréophonique. L'invention se rapporte également à un dispositif de traitement de réduction de canaux mettant en œuvre le procédé.