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41. 发明申请

US20110249822A1 ADVANCED ENCODING OF MULTI-CHANNEL DIGITAL AUDIO SIGNALS 有权
标题翻译：高级编码多通道数字音频信号
公开(公告)号：US20110249822A1
公开(公告)日：2011-10-13
申请号：US13139611
申请日：2009-12-11
申请人： Florent Jaillet , David Virette
发明人： Florent Jaillet , David Virette
IPC分类号： H04R5/00
CPC分类号： G10L19/008 , H04S3/008 , H04S3/02 , H04S2400/11 , H04S2420/03 , H04S2420/07
摘要： A method is provided for coding a multi-channel audio signal representing a sound scene comprising a plurality of sound sources. The method comprises decomposing the multi-channel signal into frequency bands and the following performed per frequency band: obtaining data representative of the direction of the sound sources of the sound scene, selecting a set of sound sources constituting principal sources, adapting the data representative of the direction of the selected principal sources, as a function of restitution characteristics of the multi-channel signal, determining a matrix for mixing the principal sources as a function of the adapted data, matrixing the principal sources by the matrix determined so as to obtain a sum signal with a reduced number of channels and coding the data representative of the direction of the sound sources and forming a binary stream comprising the coded data, the binary stream being transmittable in parallel with the sum signal.
摘要翻译：提供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，并且每个频带执行以下操作：获得表示声场的声源方向的数据，选择构成主要源的一组声源，使代表所选择的主要源的方向作为多通道信号的恢复特性的函数，确定用于根据适配数据混合主要源的矩阵，通过确定的矩阵将主源矩阵化以获得和信号，并且对代表声源方向的数据进行编码，并形成包括编码数据的二进制流，该二进制流可与和信号并行发送。

42. 发明申请

US20110106543A1 SPATIAL SYNTHESIS OF MULTICHANNEL AUDIO SIGNALS 有权
标题翻译：多通道音频信号的空间综合
公开(公告)号：US20110106543A1
公开(公告)日：2011-05-05
申请号：US12996406
申请日：2009-06-16
申请人： Florent Jaillet , David Virette
发明人： Florent Jaillet , David Virette
IPC分类号： G10L19/00 , H04S3/02
CPC分类号： G10L19/008 , H04S3/008 , H04S3/02 , H04S2420/03
摘要： 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.
摘要翻译：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。

43. 发明授权

US09521502B2 Method for determining a stereo signal 有权
标题翻译：用于确定立体声信号的方法
公开(公告)号：US09521502B2
公开(公告)日：2016-12-13
申请号：US14764754
申请日：2013-01-04
申请人： Christof Faller , David Virette , Yue Lang
发明人： Christof Faller , David Virette , Yue Lang
IPC分类号： H04S7/00 , H04R5/027 , H04R5/04 , H04S1/00 , H04R1/40 , H04R3/00
CPC分类号： H04S7/301 , H04R1/406 , H04R3/005 , H04R5/027 , H04R5/04 , H04S1/002 , H04S2400/09 , H04S2400/15
摘要： 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.
摘要翻译：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。

44. 发明申请

US20160234621A1 Method for Determining a Stereo Signal 有权
标题翻译：确定立体声信号的方法
公开(公告)号：US20160234621A1
公开(公告)日：2016-08-11
申请号：US14764754
申请日：2013-01-04
申请人： Christof Faller , David Virette , Yue Lang
发明人： Christof Faller , David Virette , Yue Lang
IPC分类号： H04S7/00 , H04R3/00 , H04R5/027
CPC分类号： H04S7/301 , H04R1/406 , H04R3/005 , H04R5/027 , H04R5/04 , H04S1/002 , H04S2400/09 , H04S2400/15
摘要： 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.
摘要翻译：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。

45. 发明授权

US08964994B2 Encoding of multichannel digital audio signals 有权
标题翻译：多声道数字音频信号的编码
公开(公告)号：US08964994B2
公开(公告)日：2015-02-24
申请号：US13139577
申请日：2009-12-11
申请人： Florent Jaillet , David Virette
发明人： Florent Jaillet , David Virette
IPC分类号： H04R5/00 , G10L19/008
CPC分类号： G10L19/008
摘要： 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.
摘要翻译：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。

46. 发明授权

US08583424B2 Spatial synthesis of multichannel audio signals 有权
标题翻译：多声道音频信号的空间合成
公开(公告)号：US08583424B2
公开(公告)日：2013-11-12
申请号：US12996406
申请日：2009-06-16
申请人： Florent Jaillet , David Virette
发明人： Florent Jaillet , David Virette
IPC分类号： G01L21/00 , G01L19/02 , G01L19/00
CPC分类号： G10L19/008 , H04S3/008 , H04S3/02 , H04S2420/03
摘要： 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.
摘要翻译：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。

47. 发明申请

US20120185256A1 ALLOCATION OF BITS IN AN ENHANCEMENT CODING/DECODING FOR IMPROVING A HIERARCHICAL CODING/DECODING OF DIGITAL AUDIO SIGNALS 有权
标题翻译：改进数字音频信号分层编码/解码的增强编码/解码中的位分配
公开(公告)号：US20120185256A1
公开(公告)日：2012-07-19
申请号：US13382794
申请日：2010-06-25
申请人： David Virette , Pierre Berthet
发明人： David Virette , Pierre Berthet
IPC分类号： G10L19/00
CPC分类号： G10L19/24 , G10L19/002 , G10L19/0212 , G10L19/038
摘要： 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.
摘要翻译：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。

48. 发明申请

US20090097663A1 Joint Sound Synthesis And Spatializaiton 有权
标题翻译：联合声音合成与空间化
公开(公告)号：US20090097663A1
公开(公告)日：2009-04-16
申请号：US12225097
申请日：2007-03-01
申请人： Gregory Pallone , Marc Emerit , David Virette
发明人： Gregory Pallone , Marc Emerit , David Virette
IPC分类号： H04S1/00
CPC分类号： G10H7/00 , G10H2210/301 , H04R2499/11 , H04S3/002
摘要： 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).
摘要翻译：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。

49. 发明授权

US08965775B2 Allocation of bits in an enhancement coding/decoding for improving a hierarchical coding/decoding of digital audio signals 有权
标题翻译：用于改善数字音频信号的分层编码/解码的增强编码/解码中的比特分配
公开(公告)号：US08965775B2
公开(公告)日：2015-02-24
申请号：US13382794
申请日：2010-06-25
申请人： David Virette , Pierre Berthet
发明人： David Virette , Pierre Berthet
IPC分类号： G10L19/00 , G10L19/24 , G10L19/002 , G10L19/02 , G10L19/038
CPC分类号： G10L19/24 , G10L19/002 , G10L19/0212 , G10L19/038
摘要： 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.
摘要翻译：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。

50. 发明授权

US08630864B2 Method for switching rate and bandwidth scalable audio decoding rate 失效
标题翻译：切换速率和带宽可扩展音频解码速率的方法
公开(公告)号：US08630864B2
公开(公告)日：2014-01-14
申请号：US11989313
申请日：2006-07-10
申请人： Stéphane Ragot , David Virette , Balazs Kovesi
发明人： Stéphane Ragot , David Virette , Balazs Kovesi
IPC分类号： G10L15/00
CPC分类号： G10L19/24 , G10L19/26
摘要： 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.
摘要翻译：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。

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