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    INDIVIDUAL CHANNEL TEMPORAL ENVELOPE SHAPING FOR BINAURAL CUE CODING SCHEMES AND THE LIKE
    4.
    发明公开
    INDIVIDUAL CHANNEL TEMPORAL ENVELOPE SHAPING FOR BINAURAL CUE CODING SCHEMES AND THE LIKE 有权
    单独的通道临时ENVELOPPENFORMUNG双耳注编码方法和LIKE

    公开(公告)号：EP1803117A1

    公开(公告)日：2007-07-04

    申请号：EP05792350.0

    申请日：2005-09-07

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Agere Systems, Inc.

    发明人： ALLAMANCHE, Eric ,  DISCH, Sascha ,  FALLER, Christof ,  HERRE, Juergen

    IPC分类号： G10L19/02 ,  G10L19/00

    CPC分类号： G10L19/008

    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>=Eo1. 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 upmixedchannels, 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.

    VERFAHREN UND VORRICHTUNG ZUM CHARAKTERISIEREN EINES SIGNALS UND ZUM ERZEUGEN EINES INDEXIERTEN SIGNALS
    5.
    发明授权
    VERFAHREN UND VORRICHTUNG ZUM CHARAKTERISIEREN EINES SIGNALS UND ZUM ERZEUGEN EINES INDEXIERTEN SIGNALS 有权
    VERFAHREN UND VORRICHTUNG ZUM CHARAKTERISIEREN EINES信号UND ZUM ERZEUGEN EINES INDEXIERTEN信号

    公开(公告)号：EP1407446B1

    公开(公告)日：2004-11-17

    申请号：EP02758344.2

    申请日：2002-07-15

    申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

    发明人： ALLAMANCHE, Eric ,  HERRE, Jürgen ,  HELLMUTH, Oliver ,  KASTNER, Thorsten

    IPC分类号： G10H1/00

    CPC分类号： G10H1/0008 ,  G10H2240/061 ,  G10H2240/135 ,  G10H2250/235 ,  G10H2250/601 ,  G10L15/04 ,  G10L19/0204

    摘要： The invention relates to a method for characterising a signal representing an audio content. A measure is determined (12) for a tonality of the signal, whereupon a statement is made (16) about the audio content of the signal on the basis of the measure determined for the tonality of the signal. The measure for the tonality is derived from a quotient which has an average sum value in the numerator, of the spectral constituents of the signal which are exponentiated with a first power (x), and has an average sum value in the denominator, of spectral constituents which are exponientiated with a second power (y), the first and second powers differing from each other. The measure for the tonality of the signal for the content analysis is robust in relation to a signal distortion, e.g. by means of MP3-coding, and has a high correlation with the content of the signal analysed.

    摘要翻译： 本发明涉及一种用于表征表示音频内容的信号的方法。 针对信号的音调确定（12）度量，随后基于针对信号的音调确定的度量来做出关于信号的音频内容的陈述（16）。 音调的度量来自一个商，该商的分子中的平均总和值，以第一幂（x）取幂的信号的频谱成分，并且具有频谱的分母的平均总和值 以第二权力（y）指数化的成分，第一和第二权力彼此不同。 用于内容分析的信号的音调的度量相对于信号失真是鲁棒的，例如， 通过MP3编码，并且与所分析的信号的内容具有高度相关性。

    VERFAHREN UND VORRICHTUNG ZUM EINBRINGEN VON INFORMATIONEN IN EINEN DATENSTROM SOWIE VERFAHREN UND VORRICHTUNG ZUM CODIEREN EINES AUDIOSIGNALS
    6.
    发明授权
    VERFAHREN UND VORRICHTUNG ZUM EINBRINGEN VON INFORMATIONEN IN EINEN DATENSTROM SOWIE VERFAHREN UND VORRICHTUNG ZUM CODIEREN EINES AUDIOSIGNALS 有权
    方法和设备中引入数据流的方法和设备信息以音频信号编码

    公开(公告)号：EP1212857B1

    公开(公告)日：2003-03-12

    申请号：EP00969432.4

    申请日：2000-10-05

    申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

    发明人： NEUBAUER, Christian ,  HERRE, Jürgen ,  BRANDENBURG, Karlheinz ,  ALLAMANCHE, Eric

    IPC分类号： H04H1/00 ,  H04B1/66

    CPC分类号： H04H20/31 ,  G10L19/018 ,  G10L19/02 ,  H04B1/707

    摘要： An inventive method for introducing information into a data stream including data about spectral values representing a short-term spectrum of an audio signal first performs a processing of the data stream to obtain the spectral values of the short-term spectrum of the audio signal. Apart from that, the information to be introduced are combined with a spread sequence to obtain a spread information signal, whereupon a spectral representation of the spread information is generated which will then be weighted with an established psychoacoustic maskable noise energy to generate a weighted information signal, wherein the energy of the introduced information is substantially equal to or below the psychoacoustic masking threshold. The weighted information signal and the spectral values of the short-term spectrum of the audio signal will then be summed and afterwards processed again to obtain a processed data stream including both audio information and information to be introduced. By the fact that the information to be introduced are introduced into the data stream without changing to the time domain, the block rastering underlying the short-term spectrum will not be touched, so that introducing a watermark will not lead to tandem encoding effects.

    VORRICHTUNG UND VERFAHREN ZUM ERZEUGEN EINES VERSCHLÜSSELTEN AUDIO- UND/ODER VIDEODATENSTROMS
    7.
    发明授权
    VORRICHTUNG UND VERFAHREN ZUM ERZEUGEN EINES VERSCHLÜSSELTEN AUDIO- UND/ODER VIDEODATENSTROMS 有权
    装置和方法，用于生成加密的音频和/或视频数据流图

    公开(公告)号：EP1155526B1

    公开(公告)日：2005-11-30

    申请号：EP99962259.0

    申请日：1999-12-15

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： ALLAMANCHE, Eric ,  HERRE, Jürgen ,  KOLLER, Jürgen ,  RUMP, Niels

    IPC分类号： H04K1/00 ,  H04N7/167 ,  H04N7/26

    CPC分类号： H04N7/1675 ,  H04K1/00 ,  H04N19/40 ,  H04N21/233 ,  H04N21/439

    摘要： The invention relates to a device (10) for producing an encoded data stream which represents an audio and/or video signal. Said device comprises an encoder (16) for encoding an input signal (12) to produce a data stream of a defined data stream syntax as the output signal. Said device further comprises an encryption device (18) which is coupled to the encoder (16) to influence encoding-related data (20a) and/or the output signal (20b) of the encoder in an unequivocally reversible manner on the basis of a code in such a manner that the produced encoded data stream contains useful information that differs from the useful information of a data stream that would be produced by the device without the presence of the encryption device and that the produced encoded data stream has the defined data stream syntax. The invention thus provides a flexible data stream encryption according to which the degree of encryption can be freely selected in such a manner that the user of a decoder who does not possess the code still has a rough idea of the audio and/or video signal that might cause him/her to buy the code to hear or view the audio and/or video signal in its full quality. The encoder-specific encryption and decryption concept can be implemented into already existing encoders/decoders with little effort.