专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

IL185656D0 LOSSLESS ENCODING OF INFORMATION WITH GUARANTEED MAXIMUM BITRATE 未知
公开(公告)号：IL185656D0
公开(公告)日：2008-01-06
申请号：IL18565607
申请日：2007-09-02
申请人： FRAUNHOFER GES FORSCHUNG , RALPH SPERSCHNEIDER , JOHANNES HILPERT , KARSTEN LINZMEIER , JUERGEN HERRE
IPC分类号： H03M20100101
摘要： A compact encoded representation of information values not exceeding a predefined size can be derived when a first encoding rule generating an encoded representation of the information values of variable length is compared to a second encoding rule generating an encoded representation of the information values of fixed length and when the encoding rule resulting in the encoded representation requiring the lower number of information units is chosen. Thus, the maximum bit rate can be guaranteed to be at least the maximum bit rate of the second encoding rule deriving the second encoded representation. Signaling the choice of the encoding rule by some rule information together with the encoded representation of the information values, the correct information values can later on be derived on a decoder side, using a decoding rule fitting the encoding rule used during the encoding.

2. 发明专利

IL182236D0 INDIVIDUAL CHANNEL SHAPING FOR BCC SCHEMES AND THE LIKE 未知
公开(公告)号：IL182236D0
公开(公告)日：2007-09-20
申请号：IL18223607
申请日：2007-03-27
申请人： FRAUNHOFER GES FORSCHUNG , AGERE SYSTEMS INC , ERIC ALLAMANCHE , SASCHA DISCH , CHRISTOF FALLER , JUERGEN HERRE
IPC分类号： G10L20100101
摘要： At an audio encoder, cue codes are generated for one or more audio channels, wherein an envelope cue code is generated by characterizing a temporal envelope in an audio channel. At an audio decoder, E transmitted audio channel(s) are decoded to generate C playback audio channels, where C>E≧1. Received cue codes include an envelope cue code corresponding to a characterized temporal envelope of an audio channel corresponding to the transmitted channel(s). One or more transmitted channel(s) are upmixed to generate one or more upmixed channels. One or more playback channels are synthesized by applying the cue codes to the one or more upmixed channels, wherein the envelope cue code is applied to an upmixed channel or a synthesized signal to adjust a temporal envelope of the synthesized signal based on the characterized temporal envelope such that the adjusted temporal envelope substantially matches the characterized temporal envelope.

3. 发明专利

IL186315D0 ADAPTIVE GROUPING OF PARAMETERS FOR ENHANCED CODING EFFICIENCY 未知
公开(公告)号：IL186315D0
公开(公告)日：2008-01-20
申请号：IL18631507
申请日：2007-09-25
申请人： FRAUNHOFER GES FORSCHUNG , RALPH SPERSCHNEIDER , JOHANNES HILPERT , KARSTEN LINZMEIER , JUERGEN HERRE
IPC分类号： G10L25/90 , H03M20100101
摘要： The present invention is based on the finding that parameters including a first set of parameters of a representation of a first portion of an original signal (130a) and including a second set of parameters of a representation of a second portion of the original signal (130b) can be efficiently encoded, when the parameters are arranged in a first sequence of tuples (138) and in a second sequence of tuples (140), wherein the first sequence of tuples comprises tuples of parameters having two parameters from a single portion of the original signal (134a, 134b) and wherein the second sequence of tuples comprises tuples of parameters having one parameter from the first portion and one parameter from the second portion of the original signal (136a, 136b). An efficient encoding can be achieved using a bit estimator to estimate the number of necessary bits to encode the first and the second sequence of tuples, wherein only the sequence of tuples is encoded, that results in the lower number of bits.

4. 发明专利

IL186312D0 ENTROPY ENCODING WITH COMPACT CODEBOOKS 未知
公开(公告)号：IL186312D0
公开(公告)日：2008-01-20
申请号：IL18631207
申请日：2007-09-25
申请人： FRAUNHOFER GES FORSCHUNG , JOHANNES HILPERT , KARSTEN LINZMEIER , JUERGEN HERRE , RAIPH SPERSCHNEIDER
IPC分类号： H03M20100101
摘要： The present invention is based on the finding that an efficient code for encoding information values can be derived, when two or more information values are grouped in a tuple in a tuple order and when an encoding rule is used, that assigns the same code word to tuples having identical information values in different orders and that does derive an order information, indicating the tuple order, and when the code word is output in association with the order information.

5. 发明专利

IL182235D0 DIFFUSE SOUND SHAPING FOR BCC SCHEMES AND THE LIKE 未知
公开(公告)号：IL182235D0
公开(公告)日：2007-09-20
申请号：IL18223507
申请日：2007-03-27
申请人： FRAUNHOFER GES FORSCHUNG , AGERE SYSTEMS INC , ERIC ALLAMANCHE , SASCHA DISCH , CHRISTOF FALLER , JUERGEN HERRE
IPC分类号： H04S20100101
摘要： In one embodiment, C input audio channels are encoded to generate E transmitted audio channel(s), where one or more cue codes are generated for two or more of the C input channels, and the C input channels are downmixed to generate the E transmitted channel(s), where C>E≧1. One or more of the C input channels and the E transmitted channel(s) are analyzed to generate a flag indicating whether or not a decoder of the E transmitted channel(s) should perform envelope shaping during decoding of the E transmitted channel(s). In one implementation, envelope shaping adjusts a temporal envelope of a decoded channel generated by the decoder to substantially match a temporal envelope of a corresponding transmitted channel.

6. 发明授权

US09460724B2 Audio signal decoder, audio signal encoder, method for providing an upmix signal representation, method for providing a downmix signal representation, computer program and bitstream using a common inter-object-correlation parameter value 有权
标题翻译：音频信号解码器，音频信号编码器，用于提供上混合信号表示的方法，用于提供下混信号表示的方法，计算机程序和比特流，使用公共的对象间相关参数值
公开(公告)号：US09460724B2
公开(公告)日：2016-10-04
申请号：US13434450
申请日：2012-03-29
申请人： Juergen Herre , Johannes Hilpert , Andreas Hoelzer , Jonas Engdegard , Heiko Purnhagen
发明人： Juergen Herre , Johannes Hilpert , Andreas Hoelzer , Jonas Engdegard , Heiko Purnhagen
IPC分类号： H04R5/00 , G10L19/008 , G10L19/005 , G10L19/20 , H04S3/02 , H04S5/00
CPC分类号： G10L19/008 , G10L19/005 , G10L19/20 , H04S3/02 , H04S5/005 , H04S2420/03
摘要： An audio signal decoder for providing an upmix signal representation on the basis of a downmix signal representation and an object-related parametric information and in dependence on a rendering information has an object parameter determinator. The object parameter determinator is configured to obtain inter-object-correlation values for a plurality of pairs of audio objects. The object parameter determinator is configured to evaluate a bitstream signaling parameter in order to decide whether to evaluate individual inter-object-correlation bitstream parameter values to obtain inter-object-correlation values for a plurality of pairs of related audio objects, or to obtain inter-object-correlation values for a plurality of pairs of related audio objects using a common inter-object-correlation bitstream parameter value. The audio signal decoder also has a signal processor configured to obtain the upmix signal representation on the basis of the downmix signal representation and using the inter-object-correlation values for a plurality of pairs of related objects and the rendering information.
摘要翻译：用于根据降混信号表示和对象相关参数信息提供上混合信号表示的音频信号解码器，并且根据呈现信息，具有对象参数确定器。对象参数确定器被配置为获得多对音频对象的对象间相关值。对象参数确定器被配置为评估比特流信令参数，以便决定是否评估各个对象间相关比特流参数值以获得多对相关音频对象的对象间相关值， - 使用公共对象间相关比特流参数值的多对相关音频对象的对象相关值。音频信号解码器还具有信号处理器，其被配置为基于下混信号表示获得上混信号表示，并且使用多对相关对象和呈现信息的对象间相关值。

7. 发明授权

US09326085B2 Device and method for generating an ambience signal 有权
公开(公告)号：US09326085B2
公开(公告)日：2016-04-26
申请号：US13442649
申请日：2012-04-09
申请人： Juergen Herre , Stefan Geyersberger , Oliver Hellmuth , Andreas Walther , Christiaan Janssen
发明人： Juergen Herre , Stefan Geyersberger , Oliver Hellmuth , Andreas Walther , Christiaan Janssen
IPC分类号： H04S5/00 , G10L19/008 , H04R5/04
CPC分类号： H04S5/005 , G10L19/008 , H04R5/04
摘要： A transient detector is provided for generating an ambience signal suitable for being emitted via loudspeakers for which there is no special loudspeaker signal to detect a transient period. A synthesis signal generator produces a synthesis signal which fulfills the transient condition on the one hand and the continuity condition for the synthesis signal on the other hand. A signal substituter will then substitute a portion of the examination signal by the synthesis signal to obtain an ambience signal for the surround channels.

8. 发明授权

US09060236B2 Apparatus for providing an upmix signal representation on the basis of a downmix signal representation, apparatus for providing a bitstream representing a multi-channel audio signal, methods, computer program and bitstream using a distortion control signaling 有权
标题翻译：用于基于下混信号表示提供上混合信号表示的装置，用于提供表示多声道音频信号的比特流的装置，使用失真控制信令的方法，计算机程序和比特流
公开(公告)号：US09060236B2
公开(公告)日：2015-06-16
申请号：US13450027
申请日：2012-04-18
申请人： Jonas Engdegard , Heiko Purnhagen , Juergen Herre , Leon Terentiv , Cornelia Falch , Oliver Hellmuth
发明人： Jonas Engdegard , Heiko Purnhagen , Juergen Herre , Leon Terentiv , Cornelia Falch , Oliver Hellmuth
IPC分类号： H04R5/00 , G10L19/00 , G10L21/00 , H04S3/00 , G10L19/008
CPC分类号： H04S3/008 , G10L19/008 , H04S2420/03
摘要： An apparatus for providing an upmix signal representation on the basis of a downmix signal representation and an object-related parametric information, which are included in a bitstream representation of an audio content, and in dependence on a rendering information, has a distortion limiter configured to adjust upmix parameters using a distortion control scheme to avoid or limit audible distortions which are caused by an inappropriate choice of rendering parameters. The distortion limiter is configured to obtain a distortion limitation control parameter, which is included in the bitstream representation of the audio content, and to adjust a distortion control scheme in dependence on the distortion limitation control parameter.
摘要翻译：基于下混合信号表示和包含在音频内容的比特流表示中并且依赖于呈现信息的对象相关参数信息来提供上混合信号表示的装置具有失真限制器，其被配置为使用失真控制方案调整上混参数，以避免或限制由不适当选择渲染参数引起的可听失真。失真限制器被配置为获得包括在音频内容的比特流表示中的失真限制控制参数，并且根据失真限制控制参数来调整失真控制方案。

9. 发明授权

US08744863B2 Multi-mode audio encoder and audio decoder with spectral shaping in a linear prediction mode and in a frequency-domain mode 有权
标题翻译：具有线性预测模式和频域模式的频谱整形的多模式音频编码器和音频解码器
公开(公告)号：US08744863B2
公开(公告)日：2014-06-03
申请号：US13441469
申请日：2012-04-06
申请人： Max Neuendorf , Guillaume Fuchs , Nikolaus Rettelbach , Tom Baeckstroem , Jeremie Lecomte , Juergen Herre
发明人： Max Neuendorf , Guillaume Fuchs , Nikolaus Rettelbach , Tom Baeckstroem , Jeremie Lecomte , Juergen Herre
IPC分类号： G10L19/00
CPC分类号： G10L19/20 , G10L19/022
摘要： A multi-mode audio signal decoder has a spectral value determinator to obtain sets of decoded spectral coefficients for a plurality of portions of an audio content and a spectrum processor configured to apply a spectral shaping to a set of spectral coefficients in dependence on a set of linear-prediction-domain parameters for a portion of the audio content encoded in a linear-prediction mode, and in dependence on a set of scale factor parameters for a portion of the audio content encoded in a frequency-domain mode. The audio signal decoder has a frequency-domain-to-time-domain converter configured to obtain a time-domain audio representation on the basis of a spectrally-shaped set of decoded spectral coefficients for a portion of the audio content encoded in the linear-prediction mode and for a portion of the audio content encoded in the frequency domain mode. An audio signal encoder is also described.
摘要翻译：多模式音频信号解码器具有频谱值确定器，以获得用于音频内容的多个部分的解码频谱系数集合;以及频谱处理器，被配置为将频谱整形应用于一组频谱系数用于以线性预测模式编码的音频内容的一部分的线性预测域参数，并且依赖于以频域模式编码的音频内容的一部分的一组比例因子参数。音频信号解码器具有频域 - 时域转换器，其被配置为基于频谱形式的解码频谱系数集来获得时域音频表示，所述解码频谱系数被编码在线性 - 预测模式和频域模式中编码的音频内容的一部分。还描述了音频信号编码器。

10. 发明授权

US08731209B2 Device and method for generating a multi-channel signal including speech signal processing 有权
标题翻译：用于产生包括语音信号处理的多声道信号的装置和方法
公开(公告)号：US08731209B2
公开(公告)日：2014-05-20
申请号：US12681809
申请日：2008-10-01
申请人： Christian Uhle , Oliver Hellmuth , Juergen Herre , Harald Popp , Thorsten Kastner
发明人： Christian Uhle , Oliver Hellmuth , Juergen Herre , Harald Popp , Thorsten Kastner
IPC分类号： H04B3/00
CPC分类号： H04S5/005 , G10L19/008 , G10L21/0364 , G10L25/78
摘要： In order to generate a multi-channel signal having a number of output channels greater than a number of input channels, a mixer is used for upmixing the input signal to form at least a direct channel signal and at least an ambience channel signal. A speech detector is provided for detecting a section of the input signal, the direct channel signal or the ambience channel signal in which speech portions occur. Based on this detection, a signal modifier modifies the input signal or the ambience channel signal in order to attenuate speech portions in the ambience channel signal, whereas such speech portions in the direct channel signal are attenuated to a lesser extent or not at all. A loudspeaker signal outputter then maps the direct channel signals and the ambience channel signals to loudspeaker signals which are associated to a defined reproduction scheme, such as, for example, a 5.1 scheme.
摘要翻译：为了产生具有大于多个输入通道的输出通道数量的多通道信号，混频器用于将输入信号上混合以形成至少直接信道信号和至少一个环境信道信号。提供语音检测器，用于检测语音部分发生的输入信号，直接信道信号或环境信道信号的一部分。基于该检测，信号修改器修改输入信号或环境信道信号，以便衰减环境信道信号中的语音部分，而直接信道信号中的这种语音部分被衰减到较小程度，或根本不被衰减。然后，扬声器信号输出器将直接信道信号和环境信道信号映射到与所定义的再现方案（例如5.1方案）相关联的扬声器信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式