公开(公告)号：US08059824B2

公开(公告)日：2011-11-15

申请号：US12225097

申请日：2007-03-01

Applicant: Grégory Pallone ,  Marc Emerit ,  David Virette

Inventor： Grégory Pallone ,  Marc Emerit ,  David Virette

IPC: H04S1/00 ,  H04R5/00

CPC classification number: G10H7/00 ,  G10H2210/301 ,  H04R2499/11 ,  H04S3/002

Abstract: The invention concerns a process for joint synthesis and spatialization of multiple sound sources in associated spatial positions, including: a) a step of assigning to each source at least one parameter (pi) representing an amplitude; b) a step of spatialization consisting in implementing an encoding into a plurality of channels, wherein each amplitude (pi) is duplicated to be multiplied to a specialization gain (gim), each spatialization gain being determined for one encoding channel (pgm) and for a source to be spatialized (Si); c) a step of grouping (R) the parameters multiplied by the gains (Pim), in respective channels (pg1, . . . , pgM), by applying a sum of said multiplied parameters (pim) on all the sources (Si) for each channel (pgm), and d) a step of parametric synthesis (SYNTH(I), . . . , SYNTH(M)) applied to each of the channels (pgm).

Abstract translation: 本发明涉及一种用于在相关联的空间位置中联合合成和多个声源空间化的过程，包括：a）向每个源分配表示振幅的至少一个参数（pi）的步骤; b）空间化步骤，其包括将编码实现到多个通道中，其中每个振幅（pi）被复制以与特殊增益（gim）相乘，每个空间增益被确定用于一个编码通道（pgm），并且对于 空间化源（Si）; c）通过在所有源（Si）上施加所述相乘参数（pim）的和来将（R）参数乘以增益（Pim）分组在各个通道（pg1，...，pgM）中的步骤， 对于每个通道（pgm），以及d）应用于每个通道（pgm）的参数合成（SYNTH（I），...，SYNTH（M））的步骤。

公开(公告)号：US20100076754A1

公开(公告)日：2010-03-25

申请号：US12448734

申请日：2007-12-18

Applicant: Balazs Kovesi ,  David Virette ,  Pierrick Philippe

Inventor： Balazs Kovesi ,  David Virette ,  Pierrick Philippe

IPC: G10L19/02

CPC classification number: G10L19/022

Abstract: The invention relates to transform coding/decoding of a digital audio signal represented by a succession of frames, using windows of different lengths. For the coding within the meaning of the invention, it is sought to detect (51) a particular event, such as an attack, in a current frame (Ti): and, at least if said particular event is detected at the start of the current frame (53), a short window (54) is directly applied in order to code (56) the current frame (Ti) without applying a transition window. Thus, the coding has a reduced delay in relation to the prior art. In addition, an ad hoc processing is applied during decoding in order to compensate for the direct passage from a long window to a short window during coding.

Abstract translation: 本发明涉及使用不同长度的窗口的由一系列帧代表的数字音频信号的变换编码/解码。 对于本发明意义上的编码，寻求在当前帧（Ti）中检测（51）特定事件，例如攻击，并且至少如果在该帧的起始处检测到所述特定事件 当前帧（53），直接应用短窗口（54）以便在不应用转换窗口的情况下对当前帧（Ti）进行编码（56）。 因此，与现有技术相比，编码具有减小的延迟。 此外，在解码期间应用ad hoc处理，以补偿在编码期间从长窗口到短窗口的直接传递。

公开(公告)号：US20070150271A1

公开(公告)日：2007-06-28

申请号：US10582025

申请日：2004-11-24

Applicant: David Virette ,  Claude Lamblin ,  Abdellatif Benjelloun Touimi

Inventor： David Virette ,  Claude Lamblin ,  Abdellatif Benjelloun Touimi

IPC: G10L21/00 ,  G10L19/00

CPC classification number: G10L19/002 ,  G10L19/0212 ,  G10L19/12 ,  G10L19/18

Abstract: The invention relates to the compression coding of digital signals such as multimedia signals (audio or video), and more particularly a method for multiple coding, wherein several encoders each comprising a series of functional blocks receive an input signal in parallel. According to the invention, a) the functional blocks (BF10, BFnN) forming each encoder are identified, along with one or several functions carried out of each block, b) functions which are common to various encoders are itemized and c) said common functions are carried out definitively for a part of at least all of the encoders within at least one same calculation module. (BF1CC, BFnCC).

Abstract translation: 本发明涉及诸如多媒体信号（音频或视频）之类的数字信号的压缩编码，更具体地说，涉及一种用于多重编码的方法，其中包括一系列功能块的几个编码器并行地接收输入信号。 根据本发明，a）识别形成每个编码器的功能块（BF 10，BF nN）以及由每个块执行的一个或几个功能，b）各种编码器共同的功能被分项，c）所述共同 对至少一个相同的计算模块内的至少所有编码器的一部分进行明确的功能。 （BF 1 CC，BFnCC）。

公开(公告)号：US09620139B2

公开(公告)日：2017-04-11

申请号：US13807657

申请日：2011-06-17

Applicant: Pierrick Philippe ,  David Virette ,  Claude Lamblin

Inventor： Pierrick Philippe ,  David Virette ,  Claude Lamblin

IPC: G10L21/00 ,  G10L19/06 ,  G10L13/00 ,  G06F11/00 ,  H03M7/30 ,  G10L19/18

CPC classification number: G10L21/00 ,  G10L19/06 ,  G10L19/18

Abstract: A method of coding/decoding of a digital audio signal comprising a succession of consecutive blocks of data, on the basis of a predictive filter. A modified predictive filter is used for the coding of at least one current block, the modified filter being constructed by the combination of: a rear filter calculated for a past block, preceding the current block, and enrichment parameters for the rear filter, which are determined as a function of the signal in the current block and comprising the coefficients of a modifying filter.

公开(公告)号：US08965775B2

公开(公告)日：2015-02-24

申请号：US13382794

申请日：2010-06-25

Applicant: David Virette ,  Pierre Berthet

Inventor： David Virette ,  Pierre Berthet

IPC: G10L19/00 ,  G10L19/24 ,  G10L19/002 ,  G10L19/02 ,  G10L19/038

CPC classification number: G10L19/24 ,  G10L19/002 ,  G10L19/0212 ,  G10L19/038

Abstract: A method of binary allocation in an enhancement coding/decoding for improving a hierarchical coding/decoding of digital audio signals, including a core coding/decoding in a first frequency band and a band extension coding/decoding in a second frequency band. For a predetermined number of bits to be allocated for the enhancement coding/decoding, a first number of bits is allocated to a coding/decoding for correcting the core coding/decoding in the first frequency band and according to a first mode of coding/decoding and a second number of bits is allocated to an enhancement coding/decoding for improving the extension coding/decoding in the second frequency band and according to a second mode of coding/decoding. Also provided are an allocation module implementing the method and a coder and decoder including this module.

Abstract translation: 一种用于改进数字音频信号的分层编码/解码的增强编码/解码中的二进制分配方法，包括第一频带中的核心编码/解码和第二频带中的频带扩展编码/解码。 对于要分配用于增强编码/解码的预定数量的比特，将第一数量的比特分配给用于校正第一频带中的核心编码/解码的编码/解码，并且根据编码/解码的第一模式 并且第二数量的比特被分配给用于改进第二频带中的扩展编码/解码的增强编码/解码，并且根据第二编码/解码模式。 还提供了实现该方法的分配模块和包括该模块的编码器和解码器。

公开(公告)号：US08630864B2

公开(公告)日：2014-01-14

申请号：US11989313

申请日：2006-07-10

Applicant: Stéphane Ragot ,  David Virette ,  Balazs Kovesi

Inventor： Stéphane Ragot ,  David Virette ,  Balazs Kovesi

IPC: G10L15/00

CPC classification number: G10L19/24 ,  G10L19/26

Abstract: A method of bitrate switching on decoding an audio signal coded by a audio coding system, said decoding comprising a post-processing step depending on the bitrate. On switching from an initial bitrate to a final bitrate, said method includes a transition step of continuous change from a signal at the initial bitrate to a signal at the final bitrate, one or both of said signals being post-processed. Application to transmission of VoIP speech and/or audio signals in data packet networks.

Abstract translation: 一种对由音频编码系统编码的音频信号进行解码的比特率切换的方法，所述解码包括取决于比特率的后处理步骤。 在从初始比特率切换到最终比特率时，所述方法包括从初始比特率的信号到最终比特率的信号的连续变化的转变步骤，所述信号中的一个或两个被后处理。 应用于数据分组网络中VoIP语音和/或音频信号的传输。

公开(公告)号：US08605909B2

公开(公告)日：2013-12-10

申请号：US12225677

申请日：2007-03-08

Applicant: Marc Emerit ,  Pierrick Philippe ,  David Virette

Inventor： Marc Emerit ,  Pierrick Philippe ,  David Virette

IPC: H04R5/00

CPC classification number: H04S3/008 ,  H04S1/007

Abstract: The invention concerns a method and a system for sound spatialization of a first set of not less than one of the audio channels encoded on of a number of frequency subbands (SBk) and decoded in a transformed domain (Fl, C, Fr, Sr, SI, Ife) into a second set of not less than two (Bl, Br) sound channels in the time domain, from modelling filters converted into a gain and a delay applicable in the transformed domain involving: filtering (A) through equalization, subband delay of the signal by applying at least one gain and one delay to generate from each of said encoded channels an equalized and delayed component; adding (B) a subset of equalized and delayed signals to create a number of filtered signals corresponding to not less than two; synthesizing (C) each of said filtered signals to obtain the second set of not less than two reproduction sound channels (Bl, Br) in the time domain.

Abstract translation: 本发明涉及一种用于声音空间化的方法和系统，所述方法和系统用于在多个频率子带（SBk）上编码的不少于一个音频信道的第一组声音空间化，并在变换域（F1，C，Fr，Sr， SI，Ife）转换成时域中不少于两个（B1，Br）声道的第二组，从被转换成增益的建模滤波器和适用于变换域的延迟，涉及：滤波（A）通过均衡，子带 通过施加至少一个增益和一个延迟来从每个所述编码信道生成均衡和延迟的分量来延迟信号; 添加（B）均衡和延迟信号的子集以产生对应于不小于2的多个滤波信号; 合成（C）每个所述滤波信号以获得时域中不少于两个再现声道（B1，Br）的第二组。

公开(公告)号：US20130103408A1

公开(公告)日：2013-04-25

申请号：US13807657

申请日：2011-06-17

Applicant: Pierrick Philippe ,  David Virette ,  Claude Lamblin

Inventor： Pierrick Philippe ,  David Virette ,  Claude Lamblin

IPC: G10L21/00

CPC classification number: G10L21/00 ,  G10L19/06 ,  G10L19/18

Abstract: A method of coding/decoding of a digital audio signal comprising a succession of consecutive blocks of data, on the basis of a predictive filter. A modified predictive filter is used for the coding of at least one current block, the modified filter being constructed by the combination of: a rear filter calculated for a past block, preceding the current block, and enrichment parameters for the rear filter, which are determined as a function of the signal in the current block and comprising the coefficients of a modifying filter.

Abstract translation: 一种基于预测滤波器对包括一系列连续的数据块的数字音频信号进行编码/解码的方法。 经修改的预测滤波器用于至少一个当前块的编码，修改的滤波器由以下组合构成：对于当前块之前的过去块计算的后滤波器和后滤波器的浓缩参数 作为当前块中的信号的函数确定并且包括修正滤波器的系数。

公开(公告)号：US08391373B2

公开(公告)日：2013-03-05

申请号：US12920352

申请日：2009-03-20

Applicant: David Virette ,  Pierrick Philippe ,  Balazs Kovesi

Inventor： David Virette ,  Pierrick Philippe ,  Balazs Kovesi

IPC: H04B14/04

CPC classification number: G10L19/005 ,  G10L19/0212 ,  G10L19/24

Abstract: A method is provided for concealing a transmission error in a digital signal chopped into a plurality of successive frames associated with different time intervals in which, on reception, the signal may comprise erased frames and valid frames, the valid frames comprising information relating to the concealment of frame loss. The method is implemented during a hierarchical decoding using a core decoding and a transform-based decoding using windows introducing a time delay of less than a frame with respect to the core decoding. The method includes concealing a first set of missing samples for the erased frame, implemented in a first time interval; a step of concealing a second set of missing samples utilizing information of said valid frame and implemented in a second time interval; and a step of transition between the first and the second set of missing samples to obtain at least part of the missing frame.

Abstract translation: 提供了一种隐藏在切成与不同时间间隔相关联的多个连续帧中的数字信号中的传输错误的方法，其中在接收时，信号可以包括擦除的帧和有效帧，该有效帧包括与隐藏有关的信息 的帧丢失。 该方法在使用核心解码和使用引入相对于核心解码的小于帧的时间延迟的窗口的基于变换的解码的分层解码期间实现。 该方法包括在第一时间间隔内隐藏针对被擦除的帧的第一组缺失样本集; 利用所述有效帧的信息隐藏第二组丢失样本并在第二时间间隔内实现的步骤; 以及在第一组和第二组缺失样本之间转换以获得缺失帧的至少一部分的步骤。

公开(公告)号：US20100283639A1

公开(公告)日：2010-11-11

申请号：US12809666

申请日：2008-12-11

Applicant: Pierrick Philippe ,  David Virette

Inventor： Pierrick Philippe ,  David Virette

IPC: H03M5/02

CPC classification number: H04N19/60 ,  G10L19/0212 ,  G10L19/022

Abstract: The present invention provides coding/decoding a digital signal, in particular using a transform with overlap employing weighting windows. In the invention, two consecutive and equal-size blocks of samples of the signal may be weighted by respective different successive windows. These two windows may be chosen independently of each other according to a criterion specific to the characteristics of the signal (entropy, data rate/distortion, etc.) that are determined for each of the two blocks.

Abstract translation: 本发明提供对数字信号的编码/解码，特别是使用加权窗口的重叠变换。 在本发明中，可以通过相应的不同连续窗口对信号的两个连续和相等大小的样本块进行加权。 这两个窗口可以根据针对两个块中的每一个确定的信号特性（熵，数据速率/失真等）的标准彼此独立地选择。