Orange

Amadeus S.a.s.

B-com

Jerome Daniel

Balazs Kovesi

Stephane Ragot

Stéphane Ragot

Julien Faure

Dietmar Fauser

Pierre Dor

Gregory Pallone

Cyril Deguet

Samuel Burdese

Vincent Masini

Marc Pavot

Paul Thierry

Pierre Clément Mahe

Andrey Fedosov

Stephane Monbel

A method and device for determining a set of corrections to be made to a multichannel sound signal, in which the set of corrections is determined on the basis of an item of information representative of a spatial image of an original multichannel signal and an item of information representative of a spatial image of the original multichannel signal that has been coded and then decoded.

Determining corrections to be applied to a multichannel audio signal, associated coding and decoding

A method and apparatus are provided for updating post-processing states applied to a decoded audio signal. The method is such that, for a current decoded signal frame, sampled at a different sampling frequency from the preceding frame, it includes the following acts: obtaining a past decoded signal, stored for the preceding frame; re-sampling by interpolation of the past decoded signal obtained; using the re-sampled past decoded signal as a memory for post-processing the current frame. A decoding method is also provided, which includes updating post-processing states.

Update of post-processing states with variable sampling frequency according to the frame

A method for resampling an audio-frequency signal with an output sampling frequency, for a current signal frame. The method is used when the preceding frame is sampled at a first sampling frequency which is different from a second sampling frequency of the current frame. The method includes: determining a first and second segments of the signal by adding samples at zero at the end of stored samples of the preceding frame and at the start of samples of the current frame, respectively; obtaining the first resampled segment and the second resampled segment by applying at least one resampling filter respectively to the first segment resampling the first frequency at the output frequency, and to the second segment resampling the second frequency at the output frequency; and combining the overlapping portion of the first and second resampled segments to obtain at least one portion of the resampled current frame.

Resampling of an audio signal interrupted with a variable sampling frequency according to the frame

A method and apparatus are provided for processing data for estimating mixing parameters of at least one audio spot signal captured by a sound recording device, called a spot microphone, arranged in the vicinity of a source among a plurality of acoustic sources constituting a sound scene, and a primary audio signal captured by an ambisonic sound recording device, arranged to capture said plurality of acoustic sources of the sound scene.

Method for processing data for the estimation of mixing parameters of audio signals, mixing method, devices, and associated computers programs

A method for processing a digital signal, implemented during decoding of the signal, in order to replace a succession of samples lost during decoding, the method comprising steps of: generating a structure of a signal for replacing the lost succession, this structure comprising spectral components determined from valid samples received during decoding before the succession of lost samples; generating a residue between a digital signal available to the decoder, comprising received valid samples, and a signal generated from the spectral components; and extracting blocks from the residue, method in which window weighted blocks are injected into the structure using an overlap-add approach, the injected blocks partially overlapping in time.

Frame loss correction by weighted noise injection

The method and system according to a preferred embodiment of the present invention allows ensuring consistency of the PNR record when it is handled within the subsystem controlled by the reservation interceptor module and including a plurality of OBEs. According to a preferred embodiment of the present invention the PNR context on open systems is centralized to avoid its fragmentation in the distributed environment, as gathering of all the context parts implies performance issues. In addition, instead of implementing a transaction session protocol to handle a start of transaction, intermediate updates and a final commit or rollback on the PNR context, the principle of the service interceptor architecture is to delegate the functional queries with the current user PNR context which will be modified in the central repository of PNR context only at response time when the whole functional use-case is finished.

Method and system for centralized reservation context management on multi-server reservation system

A method and system is provided for routing data in a system. The method includes determining an initial fixed distribution pattern, determining a queue parameter based on at least a current amount of system use and a maximum potential system use, determining a time parameter based on the time that a message in the application has been waiting for its processing, determining a load parameter based on at least the time parameter and the queue parameter, and modifying the distribution pattern based on at least the load parameter.

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Penvenan, France

Jerome Daniel