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31. 发明授权

US07024259B1 System and method for evaluating the quality of multi-channel audio signals 有权
标题翻译：用于评估多声道音频信号质量的系统和方法
公开(公告)号：US07024259B1
公开(公告)日：2006-04-04
申请号：US09889697
申请日：1999-12-15
申请人： Thomas Sporer , Roland Bitto , Karlheinz Brandenburg
发明人： Thomas Sporer , Roland Bitto , Karlheinz Brandenburg
IPC分类号： G06F17/00 , H04R5/02
CPC分类号： H04S7/30 , H04S2420/01
摘要： A system for evaluating the quality of an audio test signal derived from an audio reference signal by coding and decoding, said audio test signal and said audio reference signal each comprising a plurality of channels, comprises a unit for converting the audio reference signal into a first audio reference sum signal at a first reference point and into a second audio reference sum signal at a second reference point and for converting the audio test signal into a first audio test sum signal at the first reference point and into a second audio test sum signal at the second reference point, the audio reference sum signals and the audio test sum signals at the first and second reference points being a superposition of the respective channels, which can be emitted by a plurality of loudspeakers, weighted with a respective transfer function between the respective loudspeaker and the reference point in question, and a unit for evaluating the quality of the audio test sum signals while taking into consideration the audio reference sum signals so as to provide an indication of the quality of the audio test signal. The system according to the present invention permits real rooms and an arbitrary number of channels of the audio test signal to be taken into account so as to execute a listening-adapted evaluation of the quality of a specific coding/decoding method.
摘要翻译：一种用于评估通过编码和解码从音频参考信号导出的音频测试信号的质量的系统，所述音频测试信号和每个包括多个通道的所述音频参考信号包括用于将音频参考信号转换成第一在第一参考点处的音频参考和信号和在第二参考点处的第二音频参考和信号，并且用于将音频测试信号转换成第一参考点处的第一音频测试和信号并转换成第二音频测试和信号第二参考点，第一参考点和第二参考点处的音频参考和信号和音频测试和信号是可由多个扬声器发射的相应通道的叠加，其由相应的传递函数加权扬声器和参考点，以及用于评估音频测试和信号质量的单元以考虑音频参考和信号，以便提供音频测试信号的质量的指示。根据本发明的系统允许考虑音频测试信号的实际房间和任意数量的信道，以便执行对特定编码/解码方法的质量的倾听适应评估。

32. 再颁专利

USRE36714E Perceptual coding of audio signals 失效
标题翻译：音频信号的感知编码
公开(公告)号：USRE36714E
公开(公告)日：2000-05-23
申请号：US622313
申请日：1994-11-10
申请人： Karlheinz Brandenburg , James David Johnston
发明人： Karlheinz Brandenburg , James David Johnston
IPC分类号： G10L7/04
摘要： A method is disclosed for determining estimates of the perceived noise masking level of audio signals as a function of frequency. By developing a randomness metric related to the euclidian distance between (i) actual frequency components amplitude and phase for each block of sampled values of the signal and (ii) predicted values for these components based on values in prior blocks, it is possible to form a tonality index which provides more detailed information useful in forming the noise masking function. Application of these techniques is illustrated in a coding and decoding context for audio recording or transmission. The noise spectrum is shaped based on a noise threshold and a tonality measure for each critical frequency-band (bark).
摘要翻译：公开了一种用于确定作为频率的函数的音频信号的感知噪声屏蔽水平的估计的方法。通过开发与（i）信号的采样值的每个块的实际频率分量振幅和相位之间的欧几里德距离相关的随机度量，以及（ii）基于先前块中的值的这些分量的预测值，可以形成一种音调指数，其提供了用于形成噪声屏蔽功能的更详细的信息。这些技术的应用在用于音频记录或传输的编码和解码环境中被说明。基于每个关键频带（树皮）的噪声阈值和音调测量，噪声谱是成形的。

33. 发明授权

US08117027B2 Method and apparatus for introducing information into a data stream and method and apparatus for encoding an audio signal 有权
标题翻译：用于将信息引入数据流的方法和装置以及用于对音频信号进行编码的方法和装置
公开(公告)号：US08117027B2
公开(公告)日：2012-02-14
申请号：US12238365
申请日：2008-09-25
申请人： Christian Neubauer , Juergen Herre , Karlheinz Brandenburg , Eric Allamanche
发明人： Christian Neubauer , Juergen Herre , Karlheinz Brandenburg , Eric Allamanche
IPC分类号： G10L19/02 , H04B1/66 , H04B1/69
CPC分类号： H04H20/31 , G10L19/018 , G10L19/02 , H04B1/707
摘要： Techniques for introducing information into a data stream first obtains the spectral values of the short-term spectrum of the audio signal. Separately, information to be introduced are combined with a spread sequence obtaining a spread information signal, whereupon a spectral representation of the spread information is generated, then weighted with an established psychoacoustic maskable noise energy to generate a weighted information signal, wherein 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 are then summed and afterwards processed again to obtain a processed data stream including audio information and information to be introduced. Because the information to be introduced are introduced without changing to the time domain, the block rastering underlying the short-term spectrum are not touched, thus introducing a watermark will not lead to tandem encoding effects.
摘要翻译：将信息引入数据流的技术首先获得音频信号的短期频谱的频谱值。单独地，要引入的信息与获得扩展信息信号的扩展序列组合，从而生成扩展信息的频谱表示，然后用已建立的心理声学可屏蔽噪声能量进行加权，以产生加权信息信号，其中引入的能量信息基本上等于或低于心理声学屏蔽阈值。然后，将加权信息信号和音频信号的短期频谱的频谱值相加，然后再次进行处理，以获得包括音频信息和要引入的信息的处理数据流。由于在不改变时域的情况下引入要引入的信息，因此不会触及短期频谱下的块划像，因此引入水印不会导致串联编码效果。

34. 发明授权

US07454327B1 Method and apparatus for introducing information into a data stream and method and apparatus for encoding an audio signal 有权
标题翻译：用于将信息引入数据流的方法和装置以及用于对音频信号进行编码的方法和装置
公开(公告)号：US07454327B1
公开(公告)日：2008-11-18
申请号：US10089950
申请日：2000-10-05
申请人： Christian Neubauer , Juergen Herre , Karlheinz Brandenburg , Eric Allamanche
发明人： Christian Neubauer , Juergen Herre , Karlheinz Brandenburg , Eric Allamanche
IPC分类号： G10L19/02 , H04B1/69
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.
摘要翻译：将信息引入包括表示音频信号的短期频谱的频谱值的数据的数据流的创新方法首先执行数据流的处理以获得音频信号的短期频谱的频谱值。除此之外，将要引入的信息与扩展序列组合以获得扩展信息信号，从而生成扩展信息的频谱表示，然后将其利用已建立的心理声学可屏蔽噪声能量进行加权，以产生加权信息信号，其中所引入的信息的能量基本上等于或低于心理声学掩蔽阈值。然后将加权信息信号和音频信号的短期频谱的频谱值相加，然后再次处理，以获得包括音频信息和要引入的信息的处理数据流。由于将要引入的信息被引入到数据流而不改变到时域的事实，所以短期频谱下面的块划像不会被触及，所以引入水印不会导致串联编码效应。

35. 发明申请

US20080206731A1 Apparatus, Method and Computer Program for Compiling a Test as Well as Apparatus, Method and Computer Program for Testing an Examinee 审中-公开
标题翻译：用于测试的装置，方法和计算机程序以及用于测试检查者的装置，方法和计算机程序
公开(公告)号：US20080206731A1
公开(公告)日：2008-08-28
申请号：US11995563
申请日：2006-09-06
申请人： Fanny Bastianova-Klett , Karlheinz Brandenburg
发明人： Fanny Bastianova-Klett , Karlheinz Brandenburg
IPC分类号： G09B7/00
CPC分类号： G09B7/00
摘要： An apparatus for compiling a test comprises a database having a plurality of test tasks stored therein, each test task being associated with a task type, means for selecting test tasks from the database to obtain a multitude of selected test tasks, and means for outputting the selected test tasks of the test to a user. The means for selecting test tasks comprises means for selecting, for a task type, at least one test task from the database and for taking the selected test task over to the multitude of selected test tasks if a test task for the task type is available in the database, and an exception-handling logic configured to search the database, for a task type for which no test task is available in the database, for a replacement test task according to a given replacement rule and take same over to the multitude of selected tasks.
摘要翻译：用于编译测试的装置包括具有存储在其中的多个测试任务的数据库，每个测试任务与任务类型相关联，用于从数据库中选择测试任务以获得大量所选择的测试任务的装置，以及用于输出所选测试任务的测试给用户。用于选择测试任务的手段包括用于为任务类型选择来自数据库的至少一个测试任务并且用于将所选择的测试任务转移到多个所选择的测试任务的装置，如果任务类型的测试任务可用于该数据库和一个异常处理逻辑被配置为根据给定的替换规则为替换测试任务针对数据库中没有测试任务可用的任务类型搜索数据库，并将其与多个所选择的任务。

36. 发明授权

US07343287B2 Method and apparatus for scalable encoding and method and apparatus for scalable decoding 有权
标题翻译：用于可缩放编码的方法和装置以及用于可扩展解码的方法和装置
公开(公告)号：US07343287B2
公开(公告)日：2008-03-11
申请号：US10636149
申请日：2003-08-07
申请人： Ralf Geiger , Thomas Sporer , Karlheinz Brandenburg , Juergen Herre , Juergen Koller , Gerald Schuller
发明人： Ralf Geiger , Thomas Sporer , Karlheinz Brandenburg , Juergen Herre , Juergen Koller , Gerald Schuller
IPC分类号： G10L19/00
CPC分类号： G10L19/032 , G06F17/147 , G10L19/24
摘要： An apparatus for scalable encoding a spectrum of a signal including audio and/or video information, with the spectrum comprising binary spectral values, includes a means for generating a first sub-scaling layer and a second sub-scaling layer in addition to a means for forming the encoded signal, with the means for forming being implemented so as to include the first sub-scaling layer and the second sub-scaling layer into the encoded signal that the first and the second sub-scaling layer are separately decodable from each other. In contrast to a full-scaling layer, a sub-scaling layer includes only the bits of a certain order of a part of the binary spectral values in the band, so that, by additionally decoding a sub-scaling layer, a more finely controllable and a more finely scalable precision gain may be achieved.
摘要翻译：一种用于对包括音频和/或视频信息的信号的频谱进行可分级编码的装置，其中包括二进制频谱值的频谱包括用于生成第一子缩放层和第二子缩放层的装置，形成所述编码信号，所述用于形成的装置被实现为将所述第一子缩放层和所述第二子缩放层包括在所述编码信号中，所述第一和第二子缩放层可以彼此分开地解码。与完全缩放层相反，子缩放层仅包括频带中二分谱值的一部分的一定顺序的位，使得通过附加地解码子缩放层，更精细地控制并且可以实现更精细地扩展的精度增益。

37. 发明授权

US07064262B2 Method for converting a music signal into a note-based description and for referencing a music signal in a data bank 有权
标题翻译：用于将音乐信号转换为基于音符的描述并用于参考数据库中的音乐信号的方法
公开(公告)号：US07064262B2
公开(公告)日：2006-06-20
申请号：US10473462
申请日：2002-04-04
申请人： Frank Klefenz , Karlheinz Brandenburg , Matthias Kaufmann
发明人： Frank Klefenz , Karlheinz Brandenburg , Matthias Kaufmann
IPC分类号： G10H7/00
CPC分类号： G10H1/0041
摘要： In a method for transferring a music signal into a note-based description, a frequency-time representation of the music signal is first generated, the frequency-time representation comprising coordinate tuples, a coordinate tuple including a frequency value and a time value, the time value indicating the time of occurrence of the assigned frequency in the music signal. Thereupon, a fit function will be calculated as a function of the time, the course of which is determined by the coordinate tuples of the frequency-time representation. For time-segmenting the frequency-time representation, at least two adjacent extreme values of the fit function will be determined. On the basis of the determined extreme values, a segmenting will be carried out, a segment being limited by two adjacent extreme values of the fit function, the time length of the segments indicating a time length of a note for the segment. For pitch determination, a pitch for the segment using coordinate tuples in the segment will be determined. For calculating the fit function and determining extreme values of the fit function for segmenting, no requirements are made to the music signal which is to be transferred into a note-based representation. The method is thus also suitable for continuous music signals.
摘要翻译：在将音乐信号转换为基于音符的描述的方法中，首先生成音乐信号的频率 - 时间表示，包括坐标元组的频率 - 时间表示，包括频率值和时间值的坐标元组，指示音乐信号中分配频率发生的时间的时间值。因此，拟合函数将被计算为时间的函数，其时间由频率 - 时间表示的坐标元组决定。为了对频率 - 时间表示进行时间分割，将确定拟合函数的至少两个相邻极值。基于所确定的极值，将执行分段，段被拟合函数的两个相邻极值限制，段的时间长度指示段的音符的时间长度。对于音调确定，将确定段中使用坐标元组的段的音高。为了计算拟合函数并确定用于分割的拟合函数的极值，对要转移到基于笔记的表示中的音乐信号没有要求。因此，该方法也适用于连续的音乐信号。

38. 发明申请

US20050114126A1 Apparatus and method for coding a time-discrete audio signal and apparatus and method for decoding coded audio data 有权
标题翻译：用于编码时分离音频信号的装置和方法，以及用于对编码音频数据进行解码的装置和方法
公开(公告)号：US20050114126A1
公开(公告)日：2005-05-26
申请号：US10966780
申请日：2004-10-15
申请人： Ralf Geiger , Thomas Sporer , Karlheinz Brandenburg , Juergen Herre , Juergen Koller , Joachim Deguara
发明人： Ralf Geiger , Thomas Sporer , Karlheinz Brandenburg , Juergen Herre , Juergen Koller , Joachim Deguara
IPC分类号： G10L19/00 , G10L19/02 , G10L19/14
CPC分类号： G10L19/16 , G10L19/022 , G10L19/20 , G10L2019/0005
摘要： A time-discrete audio signal is processed to provide a quantization block with quantized spectral values. Furthermore, an integer spectral representation is generated from the time-discrete audio signal using an integer transform algorithm. The quantization block having been generated using a psychoacoustic model is inversely quantized and rounded to then form a difference between the integer spectral values and the inversely quantized rounded spectral values. The quantization block alone provides a lossy psychoacoustically coded/decoded audio signal after the decoding, whereas the quantization block, together with the combination block, provides a lossless or almost lossless coded and again decoded audio signal in the decoding. By generating the differential signal in the frequency domain, a simpler coder/decoder structure results.
摘要翻译：处理时间离散音频信号以向量化块提供量化的频谱值。此外，使用整数变换算法从时间离散音频信号生成整数频谱表示。已经使用心理声学模型产生的量化块被逆量化并舍入，从而形成整数频谱值和逆量化的舍入频谱值之间的差。量化块单独提供在解码之后的有损心理声学编码/解码音频信号，而量化块与组合块一起在解码中提供无损或几乎无损的编码和再次解码的音频信号。通过在频域中产生差分信号，可以得到更简单的编码器/解码器结构。

39. 发明授权

US06629078B1 Apparatus and method of coding a mono signal and stereo information 有权
标题翻译：编码单声道信号和立体声信息的装置和方法
公开(公告)号：US06629078B1
公开(公告)日：2003-09-30
申请号：US09445894
申请日：1999-12-13
申请人： Bernhard Grill , Bodo Teichmann , Karlheinz Brandenburg
发明人： Bernhard Grill , Bodo Teichmann , Karlheinz Brandenburg
IPC分类号： H04S100
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0212 , H04S1/007
摘要： A method of coding a time-discrete stereo signal, the stereo signal having a first and a second channel, permits scalable stereo coding. At first, a mono signal is formed from the stereo signal, which is then coded, whereupon the coded mono signal is transmitted to a bit stream. Thereafter, the coded mono singal is decoded again, whereupon stereo information is formed on the basis of the coded/decoded mono signal and the first and second channels, with such stereo information being coded and being also written into the bit stream in order to obtain a bit stream comprising a complete coded monolayer as well as a layer with coded stereo information.
摘要翻译：一种编码时分离立体声信号的方法，具有第一和第二声道的立体声信号允许可缩放的立体声编码。首先，从立体声信号形成单声道信号，然后将其编码，由此编码的单声道信号被发送到比特流。此后，再次对编码的单声道进行解码，由此基于编码/解码的单声道信号和第一和第二声道形成立体声信息，这些立体声信息被编码并且也被写入比特流，以便获得包括完整编码单层的比特流以及具有编码的立体声信息的层。

40. 发明授权

US5701346A Method of coding a plurality of audio signals 失效
标题翻译：编码多个音频信号的方法
公开(公告)号：US5701346A
公开(公告)日：1997-12-23
申请号：US704730
申请日：1996-09-12
申请人： Jurgen Herre , Berhard Grill , Ernst Eberlein , Karlheinz Brandenburg , Dieter Seitzer
发明人： Jurgen Herre , Berhard Grill , Ernst Eberlein , Karlheinz Brandenburg , Dieter Seitzer
IPC分类号： H04S5/02 , H03M7/30 , H04B14/04 , H04H20/88 , H04S3/00 , H04S3/02
CPC分类号： H04H20/88 , H04S3/02
摘要： In a method of coding a plurality of audio signals, the left and the right basic channel as well as the central channel are combined by joint stereo coding so as to obtain a jointly coded signal, which is decoded so as to provide simulated decoded signals. The simulated decoded signals and two surround channels are combined by matricization by means of a compatibility matrix so as to form compatible signals which are suitable for decoding by existing decoders. In order to avoid audible disturbances caused by excessive energy contents of the compatible signals, which would occur if joint stereo coding and decoding were carried out prior to carrying out the matricization, the compatible signals or the simulated decoded signals are dynamically weighted by means of a dynamic correction factor in such a way that the compatible signals are approximated with regard to their energy to the energy of signals which would be obtained if the two basic channels and the central channel as well as the surround channels were matricized directly.
摘要翻译： PCT No.PCT / EP95 / 00378 371日期：1996年9月12日 102（e）日期1996年9月12日PCT提交1995年2月2日PCT公布。公开号WO95 / 26083 日期1995年9月28日在一种对多个音频信号进行编码的方法中，通过联合立体声编码来组合左右基本频道以及中央频道，以获得联合编码的信号，其被解码为提供模拟解码信号。模拟的解码信号和两个环绕声道通过借助于兼容性矩阵的校准来组合，以形成适合于现有解码器解码的兼容信号。为了避免由于兼容信号的能量含量过多引起的可听到的干扰，如果在执行基准化之前进行了联合的立体声编码和解码，则会发生兼容信号或模拟解码信号通过动态校正因子，使得将兼容信号相对于其能量相对于如果两个基本信道和中央信道以及环绕信道被直接校准而获得的信号的能量近似即可。

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