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1. 发明授权

US5926553A Method for measuring the conservation of stereophonic audio signals and method for identifying jointly coded stereophonic audio signals 失效
标题翻译：用于测量立体声音频信号的保存的方法和用于识别联合编码的立体声音频信号的方法
公开(公告)号：US5926553A
公开(公告)日：1999-07-20
申请号：US817749
申请日：1997-07-21
申请人： Michael Keyhl , Jurgen Herre , Christian Schmidmer , Karlheinz Brandenburg , Dieter Seitzer
发明人： Michael Keyhl , Jurgen Herre , Christian Schmidmer , Karlheinz Brandenburg , Dieter Seitzer
IPC分类号： H04S1/00 , H04S7/00 , H04H5/00
CPC分类号： H04S1/007 , H04S7/00
摘要： Jointly processed stereophonic audio signal properties are identified using a stereophonic signal as reference signal and creating a signal for testing by processing the stereophonic signal, e.g. by coding and subsequently decoding it. Both signals are transformed into the frequency domain to create representative spectral data for the respective subbands. Correlation coefficients are determined for each subband both of the reference signal and also of the signal for testing on the basis of the spectral data of the channels of the reference signal or of the signal for testing. From the comparison of the correlation coefficients belonging to the same subband, jointly processed stereophonic audio signals are detected if at least one of the correlation coefficients of the signal for testing greatly exceeds the correlation coefficient of the reference signal for the same subband.
摘要翻译： PCT No.PCT / EP95 / 04008 Sec。 371日期1997年7月21日 102（e）日期1997年7月21日PCT提交1995年10月11日PCT公布。出版物WO96 / 12384 日期：1996年04月25日使用立体声信号作为参考信号来识别立体声音频信号特性，并通过处理立体声信号来产生用于测试的信号。通过编码并随后对其进行解码。两个信号被转换成频域以产生各个子带的代表性光谱数据。基于参考信号或测试信号的频谱数据，确定参考信号和测试信号的每个子带的相关系数。从属于相同子带的相关系数的比较来看，如果用于测试的信号的相关系数中的至少一个大大超过相同子带的参考信号的相关系数，则检测出联合处理的立体声音频信号。

2. 发明授权

US07664231B2 Method and device for quality evaluation of an audio signal and device and method for obtaining a quality evaluation result 有权
标题翻译：用于音频信号的质量评估的方法和装置以及用于获得质量评估结果的装置和方法
公开(公告)号：US07664231B2
公开(公告)日：2010-02-16
申请号：US11507197
申请日：2006-08-17
申请人： Christian Schmidmer , Martin Kastner , Michael Keyhl
发明人： Christian Schmidmer , Martin Kastner , Michael Keyhl
IPC分类号： H04M1/24 , H04M3/08 , H04M3/22
CPC分类号： H04M3/2236 , H04M3/5322 , H04M7/0048 , H04M7/12 , H04M7/128 , H04M2203/658
摘要： A quality evaluation device for quality evaluation of an audio signal transmitted via an audio signal channel includes a unit for providing contacting information to a remote user, wherein the contacting information includes a contact address. A measurement server includes an interface designed to be a final point of the audio signal channel after an access with the contact address by the remote user, wherein a starting point of the audio signal channel is the remote user, and wherein the measurement server is further designed to subject the signal provided by the remote user via the audio signal channel to the quality measurement. The quality evaluation device further includes a unit for sending a quality evaluation result generated by the measurement server from the measurement server to the remote user. This allows any user able to access the measurement server, for example per internet, to evaluate and compare qualities with any terminals, any transmission channel settings, various telephone providers.
摘要翻译：用于通过音频信号信道发送的音频信号的质量评估的质量评估装置包括用于向远程用户提供联系信息的单元，其中所述联系信息包括联系人地址。测量服务器包括被设计为在由远程用户访问联系人地址之后的音频信号通道的最终点的接口，其中音频信号通道的起始点是远程用户，并且其中测量服务器进一步旨在通过音频信号通道将由远程用户提供的信号进行质量测量。质量评估装置还包括用于将由测量服务器生成的质量评估结果从测量服务器发送到远程用户的单元。这允许任何用户能够访问例如每个互联网的测量服务器来评估和比较任何终端，任何传输信道设置，各种电话提供商的质量。

3. 发明授权

US6101475A Method for the cascaded coding and decoding of audio data 失效
标题翻译：音频数据级联编码和解码方法
公开(公告)号：US6101475A
公开(公告)日：2000-08-08
申请号：US696890
申请日：1996-08-21
申请人： Michael Keyhl , Harald Popp , Ernst Eberlein , Karl-Heinz Brandenburg , Heinz Gerhauser , Christian Schmidmer
发明人： Michael Keyhl , Harald Popp , Ernst Eberlein , Karl-Heinz Brandenburg , Heinz Gerhauser , Christian Schmidmer
IPC分类号： G10L19/00 , H03M7/30 , H04B1/66 , H04B14/04 , G10L21/04
CPC分类号： H04B1/665
摘要： In a method for the cascaded coding and decoding of audio data the spectral components of the short-time spectrum associated with a data block are formed for each data block with a certain number of time input data, the coded signal is formed, by quantization and coding, on the basis of the spectral components for this data block and using a psycho-acoustic model to determine the bit distribution for the spectral components, whereupon time output data are obtained by decoding at the end of each codec stage.To prevent a deterioration in the sound quality in codec cascades with a plurality of stages, an identification code is added to the coded signal at an initial stage to mark the start of the data block; furthermore, the subsequent codec stages divide the data blocks to be coded on the basis of this identification code.
摘要翻译： PCT No.PCT / EP94 / 03478 371日期：1996年8月21日 102（e）日期1996年8月21日PCT 1994年10月21日PCT PCT。 WO95 / 22858 PCT出版物日期1995年8月24日在音频数据的级联编码和解码方法中，为每个具有一定数量时间输入数据的数据块形成与数据块相关联的短时频谱的频谱分量，编码信号为通过量化和编码，基于该数据块的频谱分量形成，并使用心理声学模型来确定频谱分量的比特分布，由此在每个编解码器级结束时通过解码获得时间输出数据。为了防止多级编解码级联中的声音质量恶化，在初始阶段将识别码添加到编码信号，以标记数据块的开始; 此外，随后的编解码器级基于该识别码划分要编码的数据块。

4. 发明授权

US07680056B2 Apparatus and method for extracting a test signal section from an audio signal 有权
标题翻译：用于从音频信号中提取测试信号部分的设备和方法
公开(公告)号：US07680056B2
公开(公告)日：2010-03-16
申请号：US11286311
申请日：2005-11-23
申请人： Michael Keyhl , Christian Schmidmer , Roland Bitto
发明人： Michael Keyhl , Christian Schmidmer , Roland Bitto
IPC分类号： H04L12/26
CPC分类号： H04M3/2236 , G10L25/69 , G10L25/78 , H04M2203/056
摘要： For extracting signal test sections conforming to an auditory test from an audio signal, in particular for non-intrusive tests for a quality assessment of a transmission system, first of all a temporal structure of the audio signal is parsed in order to differentiate an information-carrying section of the audio signal from a preceding non-information-carrying section of the audio signal or a subsequent non-information-carrying section of the audio signal. Hereupon, a test signal section is generated based on the information-carrying section of the audio signal. Thus, test signal sections conforming to an auditory test are obtained, on the one hand determining the comparability with other auditory tests and, on the other hand, reducing a too inaccurate assessment of the transmission system based on system-immanent artefacts.
摘要翻译：为了从音频信号提取符合听觉测试的信号测试部分，特别是用于传输系统的质量评估的非侵入性测试，首先解析音频信号的时间结构以区分信息 - 来自音频信号的先前非信息传送部分的音频信号的携带部分或音频信号的后续非信息传送部分。因此，基于音频信号的信息携带部分生成测试信号部分。因此，获得符合听觉测试的测试信号部分，一方面确定与其他听觉测试的可比性，另一方面，基于系统内在的人为因素减少对传输系统的过于不准确的评估。

5. 发明申请

US20060177003A1 Apparatus and method for extracting a test signal section from an audio signal 有权
标题翻译：用于从音频信号中提取测试信号部分的设备和方法
公开(公告)号：US20060177003A1
公开(公告)日：2006-08-10
申请号：US11286311
申请日：2005-11-23
申请人： Michael Keyhl , Christian Schmidmer , Roland Bitto
发明人： Michael Keyhl , Christian Schmidmer , Roland Bitto
IPC分类号： H04M1/24
CPC分类号： H04M3/2236 , G10L25/69 , G10L25/78 , H04M2203/056
摘要： For extracting signal test sections conforming to an auditory test from an audio signal, in particular for non-intrusive tests for a quality assessment of a transmission system, first of all a temporal structure of the audio signal is parsed in order to differentiate an information-carrying section of the audio signal from a preceding non-information-carrying section of the audio signal or a subsequent non-information-carrying section of the audio signal. Hereupon, a test signal section is generated based on the information-carrying section of the audio signal. Thus, test signal sections conforming to an auditory test are obtained, on the one hand determining the comparability with other auditory tests and, on the other hand, reducing a too inaccurate assessment of the transmission system based on system-immanent artefacts.
摘要翻译：为了从音频信号提取符合听觉测试的信号测试部分，特别是用于传输系统的质量评估的非侵入性测试，首先解析音频信号的时间结构以区分信息 - 来自音频信号的先前非信息传送部分的音频信号的携带部分或音频信号的后续非信息传送部分。因此，基于音频信号的信息携带部分生成测试信号部分。因此，获得符合听觉测试的测试信号部分，一方面确定与其他听觉测试的可比性，另一方面，基于系统内在的人为因素减少对传输系统的过于不准确的评估。

6. 发明申请

US20060280313A1 Method and device for quality evaluation of an audio signal and device and method for obtaining a quality evaluation result 有权
标题翻译：用于音频信号的质量评估的方法和装置以及用于获得质量评估结果的装置和方法
公开(公告)号：US20060280313A1
公开(公告)日：2006-12-14
申请号：US11507197
申请日：2006-08-17
申请人： Christian Schmidmer , Martin Kastner , Michael Keyhl
发明人： Christian Schmidmer , Martin Kastner , Michael Keyhl
IPC分类号： H04R29/00
CPC分类号： H04M3/2236 , H04M3/5322 , H04M7/0048 , H04M7/12 , H04M7/128 , H04M2203/658
摘要： A quality evaluation device for quality evaluation of an audio signal transmitted via an audio signal channel includes a unit for providing contacting information to a remote user, wherein the contacting information includes a contact address. A measurement server includes an interface designed to be a final point of the audio signal channel after an access with the contact address by the remote user, wherein a starting point of the audio signal channel is the remote user, and wherein the measurement server is further designed to subject the signal provided by the remote user via the audio signal channel to the quality measurement. The quality evaluation device further includes a unit for sending a quality evaluation result generated by the measurement server from the measurement server to the remote user. This allows any user able to access the measurement server, for example per internet, to evaluate and compare qualities with any terminals, any transmission channel settings, various telephone providers.
摘要翻译：用于通过音频信号信道发送的音频信号的质量评估的质量评估装置包括用于向远程用户提供联系信息的单元，其中所述联系信息包括联系人地址。测量服务器包括被设计为在由远程用户访问联系人地址之后的音频信号通道的最终点的接口，其中音频信号通道的起始点是远程用户，并且其中测量服务器进一步旨在通过音频信号通道将由远程用户提供的信号进行质量测量。质量评估装置还包括用于将由测量服务器生成的质量评估结果从测量服务器发送到远程用户的单元。这允许任何用户能够访问例如每个互联网的测量服务器来评估和比较任何终端，任何传输信道设置，各种电话提供商的质量。

7. 发明授权

US09037435B2 Device and method for determining a sample rate difference 有权
标题翻译：用于确定采样率差异的装置和方法
公开(公告)号：US09037435B2
公开(公告)日：2015-05-19
申请号：US13334968
申请日：2011-12-22
申请人： Christian Schmidmer , Roland Bitto , Michael Keyhl
发明人： Christian Schmidmer , Roland Bitto , Michael Keyhl
IPC分类号： G06F17/18 , H04N17/00 , G06K9/32 , G06T7/00
CPC分类号： H04N17/004 , G06K9/32 , G06T7/001 , G06T2207/30148
摘要： In embodiments, a device is illustrated for determining a sample rate difference between a first information signal and a second information signal including an offset determiner for determining for each of a plurality of segments of the first information signal, associated offset values which temporally align the plurality of segments with respect to the second information signal and a calculator for calculating the sample rate difference on the basis of the offset values.
摘要翻译：在实施例中，示出了用于确定第一信息信号和第二信息信号之间的采样率差的装置，所述第一信息信号和第二信息信号包括偏移确定器，用于为第一信息信号的多个段中的每一个确定相关联的偏移值，相对于第二信息信号的分段;以及计算器，用于基于偏移值来计算采样率差。

8. 发明授权

US08228385B2 Apparatus for determining information in order to temporally align two information signals 有权
标题翻译：用于确定信息以便在时间上对准两个信息信号的装置
公开(公告)号：US08228385B2
公开(公告)日：2012-07-24
申请号：US12442067
申请日：2007-09-21
申请人： Michael Keyhl , Christian Schmidmer , Roland Bitto
发明人： Michael Keyhl , Christian Schmidmer , Roland Bitto
IPC分类号： H04N17/00 , H04N17/02
CPC分类号： G10L25/69 , G10L15/12 , H04N17/004
摘要： An apparatus for determining information in order to temporally align first and second information signals, each including one or several information values for successive sampling times, the apparatus including a characteristic extractor for extracting a characteristic per sampling time or per subsequence of sampling times from the first information signal within a first search pattern to obtain a first characteristic curve, and for extracting the characteristic per sampling time or per subsequence of sampling times from the second information signal within a second search pattern to obtain a second characteristic curve and a determiner for determining the information for temporal alignment based on similarities between the first and second characteristic curves of the characteristic by means of a first search for a search pattern from one of the first and second characteristic curves of the characteristic within the other of the first and second characteristic curves of the characteristic.
摘要翻译：一种用于确定信息以便时间上对准第一和第二信息信号的装置，每个信息信号包括用于连续采样时间的一个或多个信息值，所述装置包括特征提取器，用于从每个采样时间或每个采样时间的每个子序列提取来自第一信息信号，以获得第一特性曲线，并且用于在第二搜索模式中从第二信息信号中提取每采样时间或每个采样次数的每个子序列的特性以获得第二特性曲线，以及用于确定第二特征曲线的确定器基于特征的第一和第二特性曲线之间的相似性的信息，借助于第一和第二特征曲线中的另一个中的特征的第一和第二特征曲线之一的搜索图案的第一搜索，人物异端

9. 发明申请

US20120166139A1 Device and Method for Determining a Sample Rate Difference 有权
标题翻译：用于确定采样率差的设备和方法
公开(公告)号：US20120166139A1
公开(公告)日：2012-06-28
申请号：US13334968
申请日：2011-12-22
申请人： Christian Schmidmer , Roland Bitto , Michael Keyhl
发明人： Christian Schmidmer , Roland Bitto , Michael Keyhl
IPC分类号： G06F17/18
CPC分类号： H04N17/004 , G06K9/32 , G06T7/001 , G06T2207/30148
摘要： In embodiments, a device is illustrated for determining a sample rate difference between a first information signal and a second information signal including an offset determiner for determining for each of a plurality of segments of the first information signal, associated offset values which temporally align the plurality of segments with respect to the second information signal and a calculator for calculating the sample rate difference on the basis of the offset values.
摘要翻译：在实施例中，示出了用于确定第一信息信号和第二信息信号之间的采样率差的装置，所述第一信息信号和第二信息信号包括偏移确定器，用于为第一信息信号的多个段中的每一个确定相关联的偏移值，相对于第二信息信号的分段;以及计算器，用于基于偏移值来计算采样率差。

10. 发明授权

US10687122B2 Concept for determining the quality of a media data stream with varying quality-to-bitrate 有权
公开(公告)号：US10687122B2
公开(公告)日：2020-06-16
申请号：US14975397
申请日：2015-12-18
申请人： OPTICOM DIPL.-ING. MICHAEL KEYHL GMBH
发明人： Christian Schmidmer , Michael Keyhl , Matthias Obermann , Roland Bitto
IPC分类号： H04N21/647 , H04N21/845 , H04N21/4425 , H04N21/643 , H04N21/854 , H04N21/44 , H04N21/442 , H04N21/2187 , H04N21/234 , H04N21/2662 , H04N21/61 , H04N21/414 , H04N21/4143
摘要： Determining a quality of a media data stream including a sequence of data stream sections which transmit different media sections of a media content at quality-to-bitrate levels that vary across the media content, such as within the context of adaptive streaming, is configured to be more effective by deriving, from each data stream section, an identifier for the respective section, and by looking up, for each data stream section, a parameter set from a look-up table by means of the identifier derived for the respective data stream section, so that it is possible to aggregate the parameter sets and to determine the quality on the basis thereof.

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