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：US20110249821A1

公开(公告)日：2011-10-13

申请号：US13139577

申请日：2009-12-11

Applicant: Florent Jaillet ,  David Virette

Inventor： Florent Jaillet ,  David Virette

IPC: H04R5/00

CPC classification number: G10L19/008

Abstract: A method for coding a multi-channel audio signal representing a sound scene comprising a plurality of sound sources is provided. This method comprises decomposing the multi-channel signal into frequency bands and, per frequency band, obtaining directivity information per sound source of the sound scene, the information being representative of the spatial distribution of the sound source in the sound scene, of selecting a set of sound sources of the sound scene constituting principal sources, of matrixing the selected principal sources to obtain a sum signal with a reduced number of channels and, of coding the directivity information and of forming a binary stream comprising the coded directivity information, the binary stream being transmittable in parallel with the sum signal. A decoding method is also provided that is able to decode the sum signal and the directivity information to obtain a multi-channel signal, to an adapted coder and an adapted decoder.

Abstract translation: 提供了一种用于编码表示包括多个声源的声音场景的多声道音频信号的方法。 该方法包括将多声道信号分解为频带，并且每频带获得每个声场的每个声源的指向性信息，所述信息代表声场中的声源的空间分布，选择一组 构成主要源的声音场景的声源，对所选择的主要源进行矩阵化以获得具有减少的通道数的和信号，以及编码方向性信息和形成包括编码的方向性信息的二进制流，二进制流 可与和信号并行传输。 还提供了一种能够将求和信号和方向性信息解码以获得多信道信号的解码方法，其适用于编码器和适配解码器。

公开(公告)号：US20070162236A1

公开(公告)日：2007-07-12

申请号：US10587907

申请日：2004-01-30

Applicant: Claude Lamblin ,  David Virette ,  Balazs Kovesi ,  Dominique Massaloux

Inventor： Claude Lamblin ,  David Virette ,  Balazs Kovesi ,  Dominique Massaloux

IPC: G06F19/00 ,  G06F7/38

CPC classification number: H03M7/3082 ,  G10L19/097 ,  H03M7/3088

Abstract: The invention relates to compression coding and/or decoding of digital signals, in particular by vector variable-rate quantisation defining a variable resolution. For this purpose an impulsion dictionary comprises: for a given dimension, increasing resolution dictionaries imbricated into each other and, for a given dimension, a union of: a totality (D′i ) of code-vectors produced, by inserting elements taken in a final set (A) into smaller dimension code-vectors according to a final set of predetermined insertion rules (F1) and a second totality of code-vectors (Y′) which are not obtainable by insertion into the smaller dimension code vectors according to said set of the insertion rules.

Abstract translation: 本发明涉及数字信号的压缩编码和/或解码，特别是通过定义可变分辨率的矢量可变速率量化。 为此目的，冲动字典包括：对于给定的维度，增加的分辨率词典彼此融合，并且对于给定的维度，通过插入元素的整数（D'i N）来产生代码矢量 根据预定插入规则（F 1）的最终集合和不能通过插入到较小维度代码中获得的第二总代码矢量（Y'），将最终集合（A）取入最小集合（A） 根据所述插入规则集合的向量。

公开(公告)号：US09521502B2

公开(公告)日：2016-12-13

申请号：US14764754

申请日：2013-01-04

Applicant: Christof Faller ,  David Virette ,  Yue Lang

Inventor： Christof Faller ,  David Virette ,  Yue Lang

IPC: H04S7/00 ,  H04R5/027 ,  H04R5/04 ,  H04S1/00 ,  H04R1/40 ,  H04R3/00

CPC classification number: H04S7/301 ,  H04R1/406 ,  H04R3/005 ,  H04R5/027 ,  H04R5/04 ,  H04S1/002 ,  H04S2400/09 ,  H04S2400/15

Abstract: A method for determining an output stereo signal comprising determining a first differential signal and determining a second differential signal; determining a first power spectrum based on the first differential signal and determining a second power spectrum based on the second differential signal; determining a first weighting function and a second weighting function as a function of the first power spectrum and the second power spectrum; and filtering a first signal, which represents a first combination of the first input audio channel signal and the second input audio channel signal, and filtering a second signal, which represents a second combination of the first input audio channel signal and the second input audio channel signal.

Abstract translation: 一种用于确定输出立体声信号的方法，包括确定第一差分信号并确定第二差分信号; 基于所述第一差分信号确定第一功率谱，并基于所述第二差分信号确定第二功率谱; 确定作为所述第一功率谱和所述第二功率谱的函数的第一加权函数和第二加权函数; 以及对表示所述第一输入音频声道信号和所述第二输入音频声道信号的第一组合的第一信号进行滤波，以及对表示所述第一输入音频声道信号和所述第二输入音频声道信号的第二组合的第二信号进行滤波 信号。

公开(公告)号：US20160234621A1

公开(公告)日：2016-08-11

申请号：US14764754

申请日：2013-01-04

Applicant: Christof Faller ,  David Virette ,  Yue Lang

Inventor： Christof Faller ,  David Virette ,  Yue Lang

IPC: H04S7/00 ,  H04R3/00 ,  H04R5/027

CPC classification number: H04S7/301 ,  H04R1/406 ,  H04R3/005 ,  H04R5/027 ,  H04R5/04 ,  H04S1/002 ,  H04S2400/09 ,  H04S2400/15

Abstract: A method for determining an output stereo signal comprising determining a first differential signal and determining a second differential signal; determining a first power spectrum based on the first differential signal and determining a second power spectrum based on the second differential signal; determining a first weighting function and a second weighting function as a function of the first power spectrum and the second power spectrum; and filtering a first signal, which represents a first combination of the first input audio channel signal and the second input audio channel signal, and filtering a second signal, which represents a second combination of the first input audio channel signal and the second input audio channel signal.

Abstract translation: 一种用于确定输出立体声信号的方法，包括确定第一差分信号并确定第二差分信号; 基于所述第一差分信号确定第一功率谱，并基于所述第二差分信号确定第二功率谱; 确定作为所述第一功率谱和所述第二功率谱的函数的第一加权函数和第二加权函数; 以及对表示所述第一输入音频声道信号和所述第二输入音频声道信号的第一组合的第一信号进行滤波，以及对表示所述第一输入音频声道信号和所述第二输入音频声道信号的第二组合的第二信号进行滤波 信号。

公开(公告)号：US08964994B2

公开(公告)日：2015-02-24

申请号：US13139577

申请日：2009-12-11

Applicant: Florent Jaillet ,  David Virette

Inventor： Florent Jaillet ,  David Virette

IPC: H04R5/00 ,  G10L19/008

CPC classification number: G10L19/008

Abstract: A method for coding a multi-channel audio signal representing a sound scene comprising a plurality of sound sources is provided. This method comprises decomposing the multi-channel signal into frequency bands and, per frequency band, obtaining directivity information per sound source of the sound scene, the information being representative of the spatial distribution of the sound source in the sound scene, of selecting a set of sound sources of the sound scene constituting principal sources, of matrixing the selected principal sources to obtain a sum signal with a reduced number of channels and, of coding the directivity information and of forming a binary stream comprising the coded directivity information, the binary stream being transmittable in parallel with the sum signal. A decoding method is also provided that is able to decode the sum signal and the directivity information to obtain a multi-channel signal, to an adapted coder and an adapted decoder.

Abstract translation: 提供了一种用于编码表示包括多个声源的声音场景的多声道音频信号的方法。 该方法包括将多声道信号分解为频带，并且每频带获得每个声场的每个声源的指向性信息，所述信息代表声场中的声源的空间分布，选择一组 构成主要源的声音场景的声源，对所选择的主要源进行矩阵化以获得具有减少的通道数的和信号，以及编码方向性信息和形成包括编码的方向性信息的二进制流，二进制流 可与和信号并行传输。 还提供了一种能够将求和信号和方向性信息解码以获得多信道信号的解码方法，其适用于编码器和适配解码器。

公开(公告)号：US08583424B2

公开(公告)日：2013-11-12

申请号：US12996406

申请日：2009-06-16

Applicant: Florent Jaillet ,  David Virette

Inventor： Florent Jaillet ,  David Virette

IPC: G01L21/00 ,  G01L19/02 ,  G01L19/00

CPC classification number: G10L19/008 ,  H04S3/008 ,  H04S3/02 ,  H04S2420/03

Abstract: A method and associated device are provided for spatial synthesis of a sum signal to obtain at least two output signals, the sum signal as well as the spatialization parameters being output from a parametric coding by matrixing of an original multi-channel signal. The method comprises: decorrelation of the sum signal to obtain a decorrelated signal; applying a synthesis matrix, whose coefficients depend on the spatialization parameters, to the decorrelated signal and to the sum signal to obtain said output signals, wherein for at least one range of value of at least one spatialization parameter, the coefficients of the synthesis matrix are determined according to a criterion of minimizing a quantitative function, relating to the quantity of decorrelated signal in each of the output signals obtained by applying the synthesis matrix.

Abstract translation: 提供了一种用于空间合成和信号以获得至少两个输出信号的方法和相关设备，该和信号以及通过原始多信道信号的矩阵化从参数编码输出的空间参数。 该方法包括：求和信号的去相关以获得解相关信号; 将其系数取决于空间化参数的合成矩阵应用于解相关信号和和信号以获得所述输出信号，其中对于至少一个空间参数的值的至少一个范围，合成矩阵的系数为 根据使定量函数最小化的标准，与通过应用合成矩阵获得的每个输出信号中去相关信号的量相关。

公开(公告)号：US20120185256A1

公开(公告)日：2012-07-19

申请号：US13382794

申请日：2010-06-25

Applicant: David Virette ,  Pierre Berthet

Inventor： David Virette ,  Pierre Berthet

IPC: G10L19/00

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：US07680670B2

公开(公告)日：2010-03-16

申请号：US10587907

申请日：2004-01-30

Applicant: Claude Lamblin ,  David Virette ,  Balazs Kovesi ,  Dominique Massaloux

Inventor： Claude Lamblin ,  David Virette ,  Balazs Kovesi ,  Dominique Massaloux

IPC: G10L19/00 ,  G06K9/00 ,  H04N7/26

CPC classification number: H03M7/3082 ,  G10L19/097 ,  H03M7/3088

Abstract: The invention relates to compression coding and/or decoding of digital signals, in particular by vector variable-rate quantisation defining a variable resolution. For this purpose an impulsion dictionary comprises: for a given dimension, increasing resolution dictionaries imbricated into each other and, for a given dimension, a union of: a totality (D′i ) of code-vectors produced, by inserting elements taken in a final set (A) into smaller dimension code-vectors according to a final set of predetermined insertion rules (F1) and a second totality of code-vectors (Y′) which are not obtainable by insertion into the smaller dimension code vectors according to said set of the insertion rules.

Abstract translation: 本发明涉及数字信号的压缩编码和/或解码，特别是通过定义可变分辨率的矢量可变速率量化。 为此目的，冲动字典包括：对于给定的维度，增加的分辨率词典彼此融合，并且对于给定的维度，通过插入元素的整数（D'i N）来产生代码矢量 根据预定插入规则（F1）的最终集合和不能通过插入到较小维度码矢量中获得的第二总体码矢量（Y'），将最终集合（A）取入最小集合（A） 根据所说的一套插入规则。