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    GENERATION OF SPATIAL DOWNMIXES FROM PARAMETRIC REPRESENTATIONS OF MULTI CHANNEL SIGNALS
    2.
    发明授权
    GENERATION OF SPATIAL DOWNMIXES FROM PARAMETRIC REPRESENTATIONS OF MULTI CHANNEL SIGNALS 有权
    产量下降空间混合从参数表示多声道信号

    公开(公告)号：EP1999999B1

    公开(公告)日：2011-11-02

    申请号：EP06777145.1

    申请日：2006-09-01

    申请人： Dolby Sweden AB ,  Koninklijke Philips Electronics N.V.

    发明人： VILLEMOES, Lars ,  KJÖRLING, Kristofer ,  BREEBAART, Jeroen

    IPC分类号： H04S3/00

    CPC分类号： H04S3/004 ,  H04S3/002 ,  H04S3/008 ,  H04S2400/01 ,  H04S2420/01

    摘要： A headphone down mix signal (314) can be efficiently derived from a parametric down mix of a multi-channel signal (312), when modified HRTFs (310) (head related transfer functions) are derived from HRTFs (308) of a multi-channel signal using a level parameter (306) having information on a level relation between two channels of the multi-channel signals such that a modified HRTF (310) is stronger influenced by the HRTF (308) of a channel having a higher level than by the HRTF (308) of a channel having a lower level. Modified HRTFs (310) are derived within the decoding process taking into account the relative strength of the channels associated to the HRTFs (308). The HRTFs (308) are thus modified such that a down mix signal (314) of a parametric representation of a multi-channel signal can directly be used to synthesize the headphone down mix signal (314) without the need of an intermediate full parametric multi-channel reconstruction of the parametric down mix.

    REDUCED NUMBER OF CHANNELS DECODING
    5.
    发明公开
    REDUCED NUMBER OF CHANNELS DECODING 有权
    解码与渠道数量减少

    公开(公告)号：EP1999744A1

    公开(公告)日：2008-12-10

    申请号：EP06791592.6

    申请日：2006-08-18

    申请人： Dolby Sweden AB ,  Koninklijke Philips Electronics N.V.

    发明人： VILLEMOES, Lars ,  KJOERLING, Kristofer ,  BREEBAART, Jeroen

    IPC分类号： G10L19/00 ,  H04S3/00

    CPC分类号： H04S3/00 ,  H04S2420/03

    摘要： An intermediate channel representation of a multi-channel signal can be reconstructed highly efficient and with high fidelity, when upmix parameters for upmixing a transmitted downmix signal to the intermediate channel representation are derived that allow for an upmix using the same upmixing algorithms as within the multi-channel reconstruction. This can be achieved when a parameter re-calculator is used to derive the upmix parameters that takes into account also parameters having information on channels that are not included in the intermediate channel representation.

    GENERATION OF SPATIAL DOWNMIXES FROM PARAMETRIC REPRESENTATIONS OF MULTI CHANNEL SIGNALS
    6.
    发明公开
    GENERATION OF SPATIAL DOWNMIXES FROM PARAMETRIC REPRESENTATIONS OF MULTI CHANNEL SIGNALS 有权
    产量下降空间混合从参数表示多声道信号

    公开(公告)号：EP1999999A1

    公开(公告)日：2008-12-10

    申请号：EP06777145.1

    申请日：2006-09-01

    申请人： Dolby Sweden AB ,  Koninklijke Philips Electronics N.V.

    发明人： VILLEMOES, Lars ,  KJÖRLING, Kristofer ,  BREEBAART, Jeroen

    IPC分类号： H04S3/00

    CPC分类号： H04S3/004 ,  H04S3/002 ,  H04S3/008 ,  H04S2400/01 ,  H04S2420/01

    摘要： A headphone down mix signal (314) can be efficiently derived from a parametric down mix of a multi-channel signal (312), when modified HRTFs (310) (head related transfer functions) are derived from HRTFs (308) of a multi-channel signal using a level parameter (306) having information on a level relation between two channels of the multi-channel signals such that a modified HRTF (310) is stronger influenced by the HRTF (308) of a channel having a higher level than by the HRTF (308) of a channel having a lower level. Modified HRTFs (310) are derived within the decoding process taking into account the relative strength of the channels associated to the HRTFs (308). The HRTFs (308) are thus modified such that a down mix signal (314) of a parametric representation of a multi-channel signal can directly be used to synthesize the headphone down mix signal (314) without the need of an intermediate full parametric multi-channel reconstruction of the parametric down mix.

    ENHANCED CODING AND PARAMETER REPRESENTATION OF MULTICHANNEL DOWNMIXED OBJECT CODING
    7.
    发明授权
    ENHANCED CODING AND PARAMETER REPRESENTATION OF MULTICHANNEL DOWNMIXED OBJECT CODING 有权
    ERWEITERTE CODIERUNG UNDPARAMETERREPRÄSENTATIONEINER MEHRKANALIGEN HERUNTERGEMISCHTEN OBJEKTCODIERUNG

    公开(公告)号：EP2054875B1

    公开(公告)日：2011-03-23

    申请号：EP07818759.8

    申请日：2007-10-05

    申请人： Dolby Sweden AB

    发明人： ENGDEGARD, Jonas ,  VILLEMOES, Lars ,  PURNHAGEN, Heiko ,  RESCH, Barbara

    IPC分类号： G10L19/00

    CPC分类号： G10L19/20 ,  G10L19/008 ,  H04S3/008 ,  H04S3/02 ,  H04S5/00 ,  H04S7/30 ,  H04S2400/03 ,  H04S2400/11 ,  H04S2420/03

    摘要： An audio object coder for generating an encoded object signal using a plurality of audio objects includes a downmix information generator for generating downmix information indicating a distribution of the plurality of audio objects into at least two downmix channels, an audio object parameter generator for generating object parameters for the audio objects, and an output interface for generating the imported audio output signal using the downmix information and the object parameters. An audio synthesizer uses the downmix information for generating output data usable for creating a plurality of output channels of the predefined audio output configuration.

    摘要翻译： 一种用于使用多个音频对象产生编码对象信号的音频对象编码器包括：下混信息发生器，用于将表示多个音频对象的分布的下混信息生成到至少两个下混通道中;音频对象参数发生器，用于产生对象参数 以及用于使用缩混信息和对象参数来生成导入的音频输出信号的输出接口。 音频合成器使用下混信息来产生可用于创建预定音频输出配置的多个输出声道的输出数据。

    FILTER UNIT AND METHOD FOR GENERATING SUBBAND FILTER IMPULSE RESPONSES
    9.
    发明公开
    FILTER UNIT AND METHOD FOR GENERATING SUBBAND FILTER IMPULSE RESPONSES 有权
    过滤装置及其制造方法子带冲激响应

    公开(公告)号：EP2036201A1

    公开(公告)日：2009-03-18

    申请号：EP07765029.9

    申请日：2007-07-03

    申请人： Dolby Sweden AB

    发明人： VILLEMOES, Lars

    IPC分类号： H03H17/02 ,  G10L19/02

    CPC分类号： H03H17/0266

    摘要： A filter unit (102) for generating new subband filter impulse responses from input subband filter impulse responses comprises a processor (820) for examining the input filter impulse responses from at least two input subband filter input responses to find input filter impulse responses having higher values, and at least one filter impulse response having a value being lower than the higher values, and a filter calculator (305) for generating said new subband filter impulse responses using the filter impulse response values having the higher values, wherein said new subband filter impulse responses do not include the input filter impulse responses having the lower value or comprise zero-valued filter impulse responses corresponding to filter impulse responses having the lower value.

    ADVANCED PROCESSING BASED ON A COMPLEX-EXPONENTIAL-MODULATED FILTERBANK AND ADAPTIVE TIME SIGNALLING METHODS
    10.
    发明授权
    ADVANCED PROCESSING BASED ON A COMPLEX-EXPONENTIAL-MODULATED FILTERBANK AND ADAPTIVE TIME SIGNALLING METHODS 有权
    先进的加工基于带有指数调制滤波器组的自适应时的信令流程关于复

    公开(公告)号：EP1616461B1

    公开(公告)日：2009-09-30

    申请号：EP04730525.5

    申请日：2004-04-30

    申请人： Dolby Sweden AB

    发明人： ENGDEGARD, Jonas ,  VILLEMOES, Lars

    IPC分类号： H04S3/00

    CPC分类号： G10L19/008 ,  G10L19/0204 ,  H03H17/0266 ,  H04S5/00 ,  H04S2420/03

    摘要： A synthesizer for generating a decorrelation signal using an input signal is operative on a plurality of subband signals, wherein a subband signal includes a sequence of at least two subband samples, the sequence of the subband samples representing a bandwidth of the subband signal, which is smaller than a bandwidth of the input signal. The synthesizer includes a filter stage (201) for filtering each subband signal using a reverberation filter to obtain a plurality of reverberated subband signals, wherein a plurality of reverberated subband signals together represent the decorrelation signal. This decorrelation signal is used for reconstructing a signal based on a parametrically encoded stereo signal consisting of a mono signal and a coherence measure.