WO2024213554 - OPTIMIZED PROCESSING FOR REDUCING CHANNELS OF A STEREOPHONIC AUDIO SIGNAL
National phase entry:
Publication Number
WO/2024/213554
Publication Date
17.10.2024
International Application No.
PCT/EP2024/059644
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
GUERIN, Alexandre
LEFORT, Arnaud
RAGOT, Stéphane
Priority Data
FR2303719
13.04.2023
FR
FR2304288
27.04.2023
FR
FR2305109
23.05.2023
FR
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
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| Number of Multi-Dependent Claims | * |
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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 | 2018 | |
| EPO | Filing, Examination, Granting | 8113 | |
| Japan | Filing, Examination, Granting | 2029 | |
| South Korea | Filing, Examination, Granting | 1885 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
18,785
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 selection (305), for one stereophonic signal frame, between: - a first channel-reducing processing mode (T1) comprising filtering with re-phasing on each of the channels of the stereophonic signal according to an angle defined by half the determined phase difference (303, 304) between the two channels of the stereophonic signal, and a second channel-reducing processing mode (T2) comprising filtering with re-phasing on a single one of the channels of the stereophonic signal according to an angle defined by the determined phase difference (303, 304) between the two channels of the stereophonic signal, selection of the first processing mode, and of the second processing mode, respectively, being dependent on the value of a phase indicator determined per frame (302). 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, comportant une sélection (305) pour une trame de signal stéréophonique, entre : - un premier mode de traitement de réduction de canaux (Tl) comportant un filtrage avec remise en phase sur chacun des canaux du signal stéréophonique selon un angle défini par la moitié de la différence de phase déterminée (303, 304) entre les deux canaux du signal stéréophonique, et un deuxième mode de traitement de réduction de canaux (T2) comportant un filtrage avec remise en phase sur un seul des canaux du signal stéréophonique selon un angle défini par la différence de phase déterminée (303, 304) entre les deux canaux du signal stéréophonique, la sélection du premier mode de traitement, respectivement du deuxième mode de traitement, étant fonction de la valeur d'un indicateur de phase déterminé par trame (302). L'invention se rapporte également à un dispositif de traitement de réduction de canaux mettant en œuvre le procédé.