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公开(公告)号：EP0910927B1
公开(公告)日：2000-01-12
申请号：EP97925036.2
申请日：1997-06-03
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , AT & T Laboratories/Research , Lucent Technologies
发明人： GBUR, Uwe , DIETZ, Martin , TEICHMANN, Bodo , BRANDENBURG, Karlheinz , GERHÄUSER, Heinz , HERRE, Jürgen , JOHNSTON, James
IPC分类号： H04S1/00
CPC分类号： H04S1/007
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公开(公告)号：EP0910927A1
公开(公告)日：1999-04-28
申请号：EP97925036.0
申请日：1997-06-03
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , AT & T Laboratories/Research , Lucent Technologies
发明人： GBUR, Uwe , DIETZ, Martin , TEICHMANN, Bodo , BRANDENBURG, Karlheinz , GERHÄUSER, Heinz , HERRE, Jürgen , JOHNSTON, James
CPC分类号： H04S1/007
摘要： In a process for coding stereophonic spectral values, the stereophonic spectral values are first grouped into scaling factor bands (28) to which are associated scaling factors. Sections are then formed which consist of at least one scaling factor band (28). The spectral values are coded in at least one section with a coding table associated to the section among a plurality of coding tables associated each to a coding table number. The number of the used coding table is transmitted together with the coded stereophonic spectral values as supplementary information. At least one additional coding table number is provided which does not relate to a coding table but gives information relevant to the section to which the coding table is associated. A process for decoding stereophonic spectral values which have been partially coded by an intensity stereo process and contain supplementary information uses the relevant information given by the additional coding table numbers to undo the coding of the stereophonic spectral values.
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3.发明授权VERFAHREN UND VORRICHTUNG ZUM ERZEUGEN EINES SKALIERBAREN DATENSTROMS UND VERFAHREN UND VORRICHTUNG ZUM DECODIEREN EINES SKALIERBAREN DATENSTROMS 有权方法和设备，用于产生可扩展的数据流，方法和设备，用于解码分级数据流
公开(公告)号：EP1327243B1
公开(公告)日：2004-02-11
申请号：EP02702266.4
申请日：2002-01-14
CPC分类号： G10L19/24 , H04L29/06027
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4.发明授权TRIGGERUNG EINES MESSVERFAHRENS ZUR QUALITÄTSBEURTEILUNG VON AUDIO- UND/ODER SPRACHSIGNALEN 失效TRIGGERUNG EINES MESSVERFAHRENS ZURQUALITÄTSBEURTEILUNGVON AUDIO- UND / ODER SPRACHSIGNALEN
公开(公告)号：EP0891685B1
公开(公告)日：1999-09-08
申请号：EP97912209.0
申请日：1997-10-21
摘要： A process and device (24) for triggering a measurement process for evaluating the quality of audio and/or speech signals enable field measurements to be carried out to determine the quality of a digital transmission. During a first step, digital values of a reference signal underlying at least part of a test signal whose quality is to be evaluated are stored. Digital values of the test signals are also at least temporarily stored. The degree to which a section of the reference signal values coincides with the test signal values is determined to trigger the measurement process as soon as a predetermined degree of coincidence is exceeded, in order to compare a further section of the reference signal values to the test signal values in the relative position in time of the reference signal and test signal values at the moment when a predetermined degree of coincidence occurs.
摘要翻译： 用于触发用于评估音频和/或语音信号的质量的测量过程的过程和设备（24）使得能够执行现场测量以确定数字传输的质量。 在第一步骤中，存储基准信号的数字值，该基准信号的基础是要评估其质量的测试信号的至少一部分。 测试信号的数字值也至少暂时存储。 一旦参考信号值的一部分与测试信号值一致的程度被确定为一旦超过预定的一致度就触发测量过程，以便将参考信号值的另一部分与测试进行比较 在参考信号的相对时间位置中的信号值和在发生预定的一致程度时的测试信号值。
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公开(公告)号：EP0954909B1
公开(公告)日：2001-08-29
申请号：EP98922620.4
申请日：1998-03-13
发明人： HERRE, Jürgen , GBUR, Uwe , EHRET, Andreas , DIETZ, Martin , TEICHMANN, Bodo , KUNZ, Oliver , BRANDENBURG, Karlheinz, Dr. , GERHÄUSER, Heinz, Dr.
IPC分类号： H04B1/66
CPC分类号： H04B1/665 , G10L19/028
摘要： The invention relates to a method for coding or de-coding an audio signal combining the advantages of TNS processing and noise substitution. A time discrete audio signal is initially transformed in a frequency range in order to obtain spectral value of the temporal audio signal. A prediction of the spectral values in relation to frequency is subsequently made in order to enable spectral residual values. Areas within the spectral values encompassing spectral values with noise properties are detected . The spectral residual values are noise substituted in the noise areas, whereupon data relating to the noise areas and noise substitution are incorporated into side information pertaining to a coded audio signal.
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6.发明公开TRIGGERUNG EINES MESSVERFAHRENS ZUR QUALITÄTSBEURTEILUNG VON AUDIO- UND/ODER SPRACHSIGNALEN 失效触发测量程序音频和/或语音信号的质量评价
公开(公告)号：EP0891685A1
公开(公告)日：1999-01-20
申请号：EP97912209.0
申请日：1997-10-21
摘要： A process and device (24) for triggering a measurement process for evaluating the quality of audio and/or speech signals enable field measurements to be carried out to determine the quality of a digital transmission. During a first step, digital values of a reference signal underlying at least part of a test signal whose quality is to be evaluated are stored. Digital values of the test signals are also at least temporarily stored. The degree to which a section of the reference signal values coincides with the test signal values is determined to trigger the measurement process as soon as a predetermined degree of coincidence is exceeded, in order to compare a further section of the reference signal values to the test signal values in the relative position in time of the reference signal and test signal values at the moment when a predetermined degree of coincidence occurs.
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7.发明授权VERFAHREN UND VORRICHTUNG ZUM ERZEUGEN BZW. DECODIEREN EINES SKALIERBAREN DATENSTROMS UNTER BERÜCKSICHTIGUNG EINER BITSPARKASSE, CODIERER UND SKALIERBARER CODIERER 有权FOR生成方法和设备OR DECODE In的比特储存器，编码器和可伸缩CODER的光的可扩展的数据流
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8.发明授权VERFAHREN UND VORRICHTUNG ZUM ERZEUGEN EINES SKALIERBAREN DATENSTROMS UND VERFAHREN UND VORRICHTUNG ZUM DECODIEREN EINES SKALIERBAREN DATENSTROMS UNTER BERÜCKSICHTIGUNG EINER BITSPARKASSENFUNKTION 有权方法和设备，用于产生可扩展的数据流，方法和设备，用于解码可扩展的数据流中的比特储蓄银行THE LIGHT
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公开(公告)号：EP1230827B1
公开(公告)日：2003-10-01
申请号：EP00985148.6
申请日：2000-12-07
发明人： TEICHMANN, Bodo , KUNZ, Oliver , HERRE, Jürgen , PEICHL, Klaus , BEER, Michael
IPC分类号： H04S1/00
CPC分类号： H04S1/00 , G10L19/008
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10.发明公开VERFAHREN ZUM SIGNALISIEREN EINER RAUSCHSUBSTITUTION BEIM CODIEREN EINES AUDIOSIGNALS 失效METHOD FOR信令的噪声替代在编码过程中的音频信号
公开(公告)号：EP0931386A1
公开(公告)日：1999-07-28
申请号：EP98916947.0
申请日：1998-03-13
发明人： HERRE, Jürgen , GBUR, Uwe , EHRET, Andreas , DIETZ, Martin , TEICHMANN, Bodo , KUNZ, Oliver , BRANDENBURG, Karlheinz , GERHÄUSER, Heinz
CPC分类号： G10L19/028 , H04B1/665
摘要： The invention relates to a method for signalling a noise substitution during audio signal coding. According to said method, the audio signal is first transformed in the frequency range to obtain spectral values. The spectral values are subsequently grouped to form spectral value groups. On the basis of a detection whether a group of spectral values is a noise group or not, a coding table is allocated to a non-noise group or a tonal group by means of a coding table number for redundancy coding of the same. If a group is a noise group it is allocated an additional coding table number which does not refer to a coding table in order to signal that this group is a noise group and that it must not be redundancy coded. By signalling noise substitution by means of a Huffman-code table number for noise groups of spectral values which are for instance scale factor band sections and which must not be redundancy coded, an opportunity is provided for implementing availability of a noise substitution in a scale factor band in the bit flow syntax of the MPEG-2 Advanced Audio coding Standard, without intervening in the basic coding structure and without having to touch the structure of the existing bit flow syntax.
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