公开(公告)号：US20090204412A1

公开(公告)日：2009-08-13

申请号：US12224566

申请日：2007-02-13

Applicant: Balazs Kovesi ,  David Virette

Inventor： Balazs Kovesi ,  David Virette

IPC: G10L21/00

CPC classification number: G10L19/083 ,  G10L19/005

Abstract: Decoder for an audio signal coded by a coder including a long-term prediction filter wherein the decoder comprises: a block (211) for detecting transmission frame losses; a module (222) for calculating values of an error indication function representative of the cumulative adaptive excitation error during decoding following said transmission frame loss, an arbitrary value being assigned to said adaptive excitation gain for the lost frame; a module (213) for calculating an error indication parameter from said values of the error indication function; a comparator (214) for comparing said error indication parameter to at least one given threshold; and a discriminator (215) adapted to determine as a function of the results supplied by the comparator (214) a value of at least one adaptive excitation gain to be used by the decoder.

Abstract translation: 一种用于由包括长期预测滤波器的编码器编码的音频信号的解码器，其中解码器包括：用于检测传输帧损耗的块（211）; 模块（222），用于计算代表在所述传输帧丢失之后的解码期间的累积自适应激励误差的误差指示函数的值，任意值被分配给丢失帧的所述自适应激励增益; 模块（213），用于根据所述错误指示功能的值计算误差指示参数; 比较器（214），用于将所述误差指示参数与至少一个给定阈值进行比较; 以及鉴别器（215），其适于根据所述比较器（214）提供的至少一个自适应激励增益的值来确定所述解码器使用的至少一个自适应激励增益的值。

公开(公告)号：US20090083045A1

公开(公告)日：2009-03-26

申请号：US12293072

申请日：2007-03-08

Applicant: Manuel Briand ,  David Virette

Inventor： Manuel Briand ,  David Virette

IPC: G10L19/00

CPC classification number: G10L19/008 ,  G10L19/24

Abstract: A system and a method for the scalable coding of a multi-channel audio signal comprising a principal component analysis (PCA) transformation of at least two channels (L, R) of the audio signal into a principal component (CP) and at least one residual sub-component (r) by rotation defined by a transformation parameter (θ), comprising the following steps: formation of a frequency subband-based residual structure (Sfr) on the basis of the at least one residual sub-component (r), and definition of a coded audio signal (SC) comprising the principal component (CP), at least one residual structure (Sfr) of a frequency subband and the transformation parameter (θ).

Abstract translation: 一种用于多声道音频信号的可缩放编码的系统和方法，包括将音频信号的至少两个声道（L，R）的主成分分析（PCA）变换成主要分量（CP）和至少一个 通过由变换参数（θ）定义的旋转的残余子分量（r），包括以下步骤：基于所述至少一个残余子分量（r）形成基于频率子带的残差结构（Sfr） 以及包括主成分（CP）的编码音频信号（SC），频率子带的至少一个残留结构（Sfr）和变换参数（theta）的定义。

公开(公告)号：US20090083044A1

公开(公告)日：2009-03-26

申请号：US12293041

申请日：2007-03-08

Applicant: Manuel Briand ,  David Virette

Inventor： Manuel Briand ,  David Virette

IPC: G10L19/00

CPC classification number: G10L19/008

Abstract: A system and a method for coding by principal component analysis (PCA) of a multi-channel audio signal comprising the following steps: decomposing at least two channels (L, R) of said audio signal into a plurality of frequency sub-bands (1(b1), . . . , 1(bN), r(b1), . . . , r(bN)), calculating at least one transformation parameter (θ(b1), . . . , θ(bN)) as a function of at least some of said plurality of frequency sub-bands, transforming at least some of said plurality of frequency sub-bands into a plurality of frequency sub-components as a function of said at least one transformation parameter (θ(b1), . . . , θ(bN)), said plurality of frequency sub-components comprising principal frequency sub-components (CP(b1), . . . , CP(bN)), combining at least some of said principal frequency sub-components (CP(b1), . . . , CP(bN)) in order to form a principal component (CP), and defining a coded audio signal (SC) representing said multi-channel audio signal (C1, . . . ,CM), said coded audio signal (SC) comprising said principal component (CP) and said at least one transformation parameter (θ(b1), . . . , θ(bN)).

Abstract translation: 一种用于通过多声道音频信号的主成分分析（PCA）进行编码的系统和方法，包括以下步骤：将所述音频信号的至少两个声道（L，R）分解成多个频率子带（1 （b1），...，1（bN），r（b1），...，r（bN）），计算至少一个变换参数（theta（b1），...，theta（bN） 所述多个频率子带中的至少一些的功能是将所述多个频率子带中的至少一些变换为多个频率子分量作为所述至少一个变换参数（θ（b1））的函数， ，...，theta（bN）），所述多个频率子分量包括主频分量分量（CP（b1），...，CP（bN）），将至少一些所述主频分量 组件（CP（b1），...，CP（bN）），以形成主要组件（CP），并且定义表示所述多声道音频信号（C1，...， CM）说 包括所述主成分（CP）和所述至少一个变换参数（theta（b1））的编码音频信号（SC）。 。 。 ，theta（bN））。

公开(公告)号：US20070160216A1

公开(公告)日：2007-07-12

申请号：US10582834

申请日：2003-12-15

Applicant: Rozenn Nicol ,  David Virette ,  Marc Emerit

Inventor： Rozenn Nicol ,  David Virette ,  Marc Emerit

IPC: H04R5/00 ,  G10H1/46

CPC classification number: G10H1/0091 ,  G10H2210/301 ,  G10H2250/111

Abstract: The invention relates to the synthesis and the joint spatialization of sounds emitted by virtual sources. According to the invention, a step (ETA) is provided that consists of determining parameters including at least one gain (gi) for defining, at the same time, a loudness characterizing the nature of the virtual source and the position of the source relative to a predetermined origin.

Abstract translation: 本发明涉及由虚拟源发出的声音的合成和联合空间化。 根据本发明，提供了一种步骤（ETA），其包括确定包括至少一个增益（gi）的参数，该增益用于同时定义表征虚拟源的性质的响度以及源的相对于 预定来源。

公开(公告)号：US08867752B2

公开(公告)日：2014-10-21

申请号：US13056169

申请日：2009-07-03

Applicant: David Virette ,  Pierrick Philippe

Inventor： David Virette ,  Pierrick Philippe

IPC: H04R5/00 ,  G10L19/00 ,  G10L21/00 ,  G10L19/008 ,  H04S3/02 ,  G10L19/005

CPC classification number: G10L19/008 ,  G10L19/005 ,  H04R2420/03 ,  H04S3/02

Abstract: A method for processing sound data is provided for the reconstruction of multi-channel audio data on the basis at least of data on a reduced number of channels and of spatialization data. A test is carried out to determine whether the spatialization data received are valid. If the test is positive, a spatialization value is predicted according to a per respective model of a plurality of models. A prediction model is chosen on the basis of the spatialization values thus predicted and on the basis of the spatialization data received, to permit, in case of subsequent reception of defective spatialization data, a prediction according to this chosen model of a spatialization value and to use this predicted spatialization value for the reconstruction of the multi-channel audio data.

Abstract translation: 提供用于处理声音数据的方法，用于至少基于减少数量的信道和空间数据的数据的重建多声道音频数据。 进行测试以确定接收到的空间化数据是否有效。 如果测试是正的，则根据多个模型的每个相应模型来预测空间化值。 基于如此预测的空间化值，并且基于所接收的空间化数据来选择预测模型，以便在随后接收不合格的空间数据的情况下，根据该空间化值的所选择的模型进行预测，并且 使用该预测的空间化值来重建多声道音频数据。

公开(公告)号：US08812327B2

公开(公告)日：2014-08-19

申请号：US13382786

申请日：2010-06-25

Applicant: David Virette ,  Stéphane Ragot ,  Balazs Kovesi ,  Pierre Berthet

Inventor： David Virette ,  Stéphane Ragot ,  Balazs Kovesi ,  Pierre Berthet

IPC: G10L19/00 ,  G10L19/02 ,  G10L19/12 ,  G10L21/00 ,  G10L21/02 ,  G10L21/04 ,  G10L25/00 ,  G06F15/00 ,  H04N19/00

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

Abstract: A method of hierarchical coding of a digital audio frequency input signal into several frequency sub-bands, including a core coding of the input signal according to a first throughput and at least one enhancement coding of higher throughput, of a residual signal. The core coding uses a binary allocation according to an energy criterion. The method includes for the enhancement coding: calculating a frequency-based masking threshold for at least part of the frequency bands processed by the enhancement coding; determining a perceptual importance per frequency sub-band as a function of the masking threshold and as a function of the number of bits allocated for the core coding; binary allocation of bits in the frequency sub-bands processed by the enhancement coding, as a function of the perceptual importance determined; and coding the residual signal according to the bit allocation. Also provided are a decoding method, a coder and a decoder.

Abstract translation: 一种将数字音频输入信号分层编码成若干频率子带的方法，包括根据第一吞吐量的输入信号的核心编码和较高吞吐量的残余信号的至少一个增强编码。 核心编码根据能量标准使用二进制分配。 该方法包括用于增强编码：计算由增强编码处理的至少部分频带的基于频率的掩蔽阈值; 确定每个频率子带的感知重要性作为掩蔽阈值的函数，并且作为分配给核心编码的比特数的函数; 由增强编码处理的频率子带中的位的二进制分配作为确定的感知重要性的函数; 并根据比特分配对残差信号进行编码。 还提供了解码方法，编码器和解码器。

公开(公告)号：US20130282387A1

公开(公告)日：2013-10-24

申请号：US13995718

申请日：2011-12-16

Applicant: Pierrick Philippe ,  David Virette

Inventor： Pierrick Philippe ,  David Virette

IPC: G10L19/00

CPC classification number: G10L19/00 ,  G10L19/02 ,  G10L19/0204 ,  G10L19/0212 ,  G10L19/022 ,  G10L19/26

Abstract: A method for processing a signal in the form of consecutive sample blocks, the method comprising filtering in a transformed domain of sub-bands, and particularly equalization processing, applied to a current block in the transformed domain, and filtering-adjustment processing that is applied in the transformed domain to at least one block adjacent to the current block.

Abstract translation: 一种用于处理连续样本块形式的信号的方法，所述方法包括对变换域中的当前块应用的子带的变换域，特别是均衡处理进行滤波，以及应用滤波调整处理 在变换的域中至少一个与当前块相邻的块。

公开(公告)号：US08370134B2

公开(公告)日：2013-02-05

申请号：US12293041

申请日：2007-03-08

Applicant: Manuel Briand ,  David Virette

Inventor： Manuel Briand ,  David Virette

IPC: G10L19/14

CPC classification number: G10L19/008

Abstract: A system and a method for coding by principal component analysis (PCA) of a multi-channel audio signal comprising the following steps: decomposing at least two channels (L, R) of said audio signal into a plurality of frequency sub-bands (I(b1), . . . , I(bN), r(b1), . . . , r(bN)), calculating at least one transformation parameter (θ(b1), . . . , θ(bN)) as a function of at least some of said plurality of frequency sub-bands, transforming at least some of said plurality of frequency sub-bands into a plurality of frequency sub-components as a function of said at least one transformation parameter (θ(b1), . . . , θ(bN)), said plurality of frequency sub-components comprising principal frequency sub-components (CP(b1), . . . , CP(bN)), combining at least some of said principal frequency sub-components (CP(b1), . . . , CP(bN)) in order to form a principal component (CP), and defining a coded audio signal (SC) representing said multi-channel audio signal (C1, . . . , CM), said coded audio signal (SC) comprising said principal component (CP) and said at least one transformation parameter (θ(b1), . . . , θ(bN)).

Abstract translation: 一种用于通过主要分量分析（PCA）编码多声道音频信号的系统和方法，包括以下步骤：将所述音频信号的至少两个声道（L，R）分解成多个频率子带（I （b1），...，I（bN），r（b1），...，r（bN）），计算至少一个变换参数（＆Thetas;（b1），...，＆thetas;（bN） ）作为所述多个频率子带中的至少一些的函数，将所述多个频率子带中的至少一些频率子带变换为多个频率子分量，作为所述至少一个变换参数的函数（“ （b1），...，...，...（bN）），所述多个频率子分量包括主频分量分量（CP（b1），...，CP（bN））， 主要频率子分量（CP（b1），...，CP（bN）），以形成主分量（CP），并且定义表示所述多声道音频信号（C1， ... ，CM），所述编码音频信号（SC）包括所述主分量（CP）和所述至少一个变换参数（“The”;（b1），...，＆thetas;（bN））。

公开(公告)号：US08359194B2

公开(公告)日：2013-01-22

申请号：US12293072

申请日：2007-03-08

Applicant: Manuel Briand ,  David Virette

Inventor： Manuel Briand ,  David Virette

IPC: G10L19/02

CPC classification number: G10L19/008 ,  G10L19/24

Abstract: A system and a method for the scalable coding of a multi-channel audio signal comprising a principal component analysis (PCA) transformation of at least two channels (L, R) of the audio signal into a principal component (CP) and at least one residual sub-component (r) by rotation defined by a transformation parameter (θ), comprising the following steps: formation of a frequency subband-based residual structure (Sfr) on the basis of the at least one residual sub-component (r), and definition of a coded audio signal (SC) comprising the principal component (CP), at least one residual structure (Sfr) of a frequency subband and the transformation parameter (θ).

Abstract translation: 一种用于多声道音频信号的可缩放编码的系统和方法，包括将音频信号的至少两个声道（L，R）的主成分分析（PCA）变换为主成分（CP）和至少一个 包括以下步骤：基于所述至少一个残余子分量（r）来形成基于频率子带的残余结构（Sfr），所述残余子分量（r）由转换参数（＆amp; ）和包括主成分（CP）的编码音频信号（SC）的定义，频率子带的至少一个残留结构（Sfr）和变换参数（“thetas”）。

公开(公告)号：US08180632B2

公开(公告)日：2012-05-15

申请号：US12224566

申请日：2007-02-13

Applicant: Balazs Kovesi ,  David Virette

Inventor： Balazs Kovesi ,  David Virette

IPC: G10L19/00 ,  G10L19/02

CPC classification number: G10L19/083 ,  G10L19/005

Abstract: Decoder for an audio signal coded by a coder including a long-term prediction filter wherein the decoder comprises: a block (211) for detecting transmission frame losses; a module (222) for calculating values of an error indication function representative of the cumulative adaptive excitation error during decoding following said transmission frame loss, an arbitrary value being assigned to said adaptive excitation gain for the lost frame; a module (213) for calculating an error indication parameter from said values of the error indication function; a comparator (214) for comparing said error indication parameter to at least one given threshold; and a discriminator (215) adapted to determine as a function of the results supplied by the comparator (214) a value of at least one adaptive excitation gain to be used by the decoder.

Abstract translation: 一种用于由包括长期预测滤波器的编码器编码的音频信号的解码器，其中解码器包括：用于检测传输帧损耗的块（211）; 模块（222），用于计算代表在所述传输帧丢失之后的解码期间的累积自适应激励误差的误差指示函数的值，任意值被分配给丢失帧的所述自适应激励增益; 模块（213），用于根据所述错误指示功能的值计算误差指示参数; 比较器（214），用于将所述误差指示参数与至少一个给定阈值进行比较; 以及鉴别器（215），其适于根据所述比较器（214）提供的至少一个自适应激励增益的值来确定所述解码器使用的至少一个自适应激励增益的值。