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1. 发明授权

US08929568B2 Bandwidth extension of a low band audio signal 有权
标题翻译：低频音频信号的带宽扩展
公开(公告)号：US08929568B2
公开(公告)日：2015-01-06
申请号：US13509859
申请日：2010-09-14
申请人： Volodya Grancharov , Stefan Bruhn , Harald Pobloth , Sigurdur Sverrisson
发明人： Volodya Grancharov , Stefan Bruhn , Harald Pobloth , Sigurdur Sverrisson
IPC分类号： H03G5/00 , G10L21/038
CPC分类号： G10L21/038 , G10L21/0388
摘要： Estimation of a high band extension of a low band audio signal includes the following steps: extracting (S1) a set of features of the low band audio signal; mapping (S2) extracted features to at least one high band parameter with generalized additive modeling; frequency shifting (S3) a copy of the low band audio signal into the high band; controlling (S4) the envelope of the frequency shifted copy of the low band audio signal by said at least one high band parameter.
摘要翻译：估计低频带音频信号的高频段扩展包括以下步骤：提取（S1）低频带音频信号的一组特征; 将（S2）提取的特征提供给具有广义加性建模的至少一个高频带参数; 将低频音频信号的副本频移（S3）成高频带; 通过所述至少一个高频带参数来控制（S4）低频带音频信号的频移复制的包络。

2. 发明申请

US20120230515A1 BANDWIDTH EXTENSION OF A LOW BAND AUDIO SIGNAL 有权
标题翻译：低频音频信号的带宽扩展
公开(公告)号：US20120230515A1
公开(公告)日：2012-09-13
申请号：US13509859
申请日：2010-09-14
申请人： Volodya Grancharov , Stefan Bruhn , Harald Pobloth , Sigurdur Sverrisson
发明人： Volodya Grancharov , Stefan Bruhn , Harald Pobloth , Sigurdur Sverrisson
IPC分类号： H03G5/00
CPC分类号： G10L21/038 , G10L21/0388
摘要： Estimation of a high band extension of a low band audio signal includes the following steps: extracting (S1) a set of features of the low band audio signal; mapping (S2) extracted features to at least one high band parameter with generalized additive modeling; frequency shifting (S3) a copy of the low band audio signal into the high band; controlling (S4) the envelope of the frequency shifted copy of the low band audio signal by said at least one high band parameter.
摘要翻译：估计低频带音频信号的高频段扩展包括以下步骤：提取（S1）低频带音频信号的一组特征; 将（S2）提取的特征提供给具有广义加性建模的至少一个高频带参数; 将低频音频信号的副本频移（S3）成高频带; 通过所述至少一个高频带参数来控制（S4）低频带音频信号的频移复制的包络。

3. 发明申请

US20110153336A1 MULTI-MODE SCHEME FOR IMPROVED CODING OF AUDIO 有权
标题翻译：用于改进音频编码的多模式方案
公开(公告)号：US20110153336A1
公开(公告)日：2011-06-23
申请号：US12996959
申请日：2008-06-24
申请人： Volodya Grancharov , Stefan Bruhn , Harald Pobloth
发明人： Volodya Grancharov , Stefan Bruhn , Harald Pobloth
IPC分类号： G10L19/00
CPC分类号： G10L19/22
摘要： The present invention relates to an improved scheme for coding of audio. In particular, the present invention relates to an encoder device and a method for coding an input signal in an encoder system. The method comprises applying a first mode to the input signal to form a first output and applying a second mode to the input signal to form a second output. A first processed output is then formed from at least a part of the first output, and a second processed output is formed from at least a part of the second output. Forming a second processed output comprises estimating a part of the input signal from at least a part of the second output. Then, an optimum mode is determined based on the firstprocessedoutput and the secondprocessedoutput, and the output according to the optimum mode is selected.
摘要翻译：本发明涉及用于音频编码的改进方案。具体而言，本发明涉及编码器装置和编码器系统中的输入信号编码方法。该方法包括将第一模式应用于输入信号以形成第一输出并将第二模式应用于输入信号以形成第二输出。然后从第一输出的至少一部分形成第一处理输出，并且从第二输出的至少一部分形成第二处理输出。形成第二处理输出包括从第二输出的至少一部分估计输入信号的一部分。然后，基于第一处理输出和第二处理输出确定最佳模式，并且选择根据最佳模式的输出。

4. 发明授权

US08494864B2 Multi-mode scheme for improved coding of audio 有权
标题翻译：用于改进音频编码的多模式方案
公开(公告)号：US08494864B2
公开(公告)日：2013-07-23
申请号：US12996959
申请日：2008-06-24
申请人： Volodya Grancharov , Stefan Bruhn , Harald Pobloth
发明人： Volodya Grancharov , Stefan Bruhn , Harald Pobloth
IPC分类号： G10L19/00
CPC分类号： G10L19/22
摘要： The present invention relates to an improved scheme for coding of audio. In particular, the present invention relates to an encoder device and a method for coding an input signal in an encoder system. The method comprises applying a first mode to the input signal to form a first output and applying a second mode to the input signal to form a second output. A first processed output is then formed from at least a part of the first output, and a second processed output is formed from at least a part of the second output. Forming a second processed output comprises estimating a part of the input signal from at least a part of the second output. Then, an optimum mode is determined based on the first processed output and the second processed output, and the output according to the optimum mode is selected.
摘要翻译：本发明涉及用于音频编码的改进方案。具体而言，本发明涉及编码器装置和编码器系统中的输入信号编码方法。该方法包括将第一模式应用于输入信号以形成第一输出并将第二模式应用于输入信号以形成第二输出。然后从第一输出的至少一部分形成第一处理输出，并且从第二输出的至少一部分形成第二处理输出。形成第二处理输出包括从第二输出的至少一部分估计输入信号的一部分。然后，基于第一处理输出和第二处理输出确定最佳模式，并且选择根据最佳模式的输出。

5. 发明授权

US08977542B2 Audio encoder and decoder and methods for encoding and decoding an audio signal 有权
标题翻译：音频编码器和解码器以及用于对音频信号进行编码和解码的方法
公开(公告)号：US08977542B2
公开(公告)日：2015-03-10
申请号：US13808428
申请日：2010-07-16
申请人： Erik Norvell , Stefan Bruhn , Harald Pobloth
发明人： Erik Norvell , Stefan Bruhn , Harald Pobloth
IPC分类号： G10L19/13 , G10L19/038 , G10L19/06 , G10L19/12 , G10L19/00
CPC分类号： G10L19/13 , G10L19/038 , G10L19/06 , G10L19/12 , G10L2019/0002 , G10L2019/0005
摘要： The present invention relates to a frequency domain based method of encoding and decoding an audio signal, wherein an adaptive spectral code book is updated with synthesized frequency domain representations of a time domain signal segment. A frequency analysis is performed of a received time domain signal segment in order to obtain a frequency domain representation, and the adaptive spectral code book is searched for a first approximation of the frequency domain representation. A fixed spectral code book is searched for an approximation of the residual frequency representation. A synthesized frequency domain representation may be generated from the two approximations.
摘要翻译：本发明涉及一种基于频域编码和解码音频信号的方法，其中用时域信号段的合成频域表示更新自适应频谱码本。对接收到的时域信号段执行频率分析以获得频域表示，并且搜索自适应频谱代码簿以进行频域表示的第一近似。搜索固定频谱代码簿以获得残差频率表示的近似值。可以从两个近似生成合成的频域表示。

6. 发明申请

US20130110506A1 Audio Encoder and Decoder and Methods for Encoding and Decoding an Audio Signal 有权
标题翻译：用于对音频信号进行编码和解码的音频编码器和解码器和方法
公开(公告)号：US20130110506A1
公开(公告)日：2013-05-02
申请号：US13808428
申请日：2010-07-16
申请人： Erik Norvell , Stefan Bruhn , Harald Pobloth
发明人： Erik Norvell , Stefan Bruhn , Harald Pobloth
IPC分类号： G10L19/12
CPC分类号： G10L19/13 , G10L19/038 , G10L19/06 , G10L19/12 , G10L2019/0002 , G10L2019/0005
摘要： The present invention relates to a frequency domain based method of encoding and decoding an audio signal, wherein an adaptive spectral code book is updated with synthesized frequency domain representations of a time domain signal segment. A frequency analysis is performed of a received time domain signal segment in order to obtain a frequency domain representation, and the adaptive spectral code book is searched for a first approximation of the frequency domain representation. A fixed spectral code book is searched for an approximation of the residual frequency representation. A synthesized frequency domain representation may be generated from the two approximations.
摘要翻译：本发明涉及一种基于频域编码和解码音频信号的方法，其中用时域信号段的合成频域表示更新自适应频谱码本。对接收到的时域信号段执行频率分析以获得频域表示，并且搜索自适应频谱代码簿以进行频域表示的第一近似。搜索固定频谱代码簿以获得残差频率表示的近似值。可以从两个近似生成合成的频域表示。

7. 发明申请

US20090172060A1 FILTER ADAPTIVE FREQUENCY RESOLUTION 有权
标题翻译：滤波器自适应频率分辨率
公开(公告)号：US20090172060A1
公开(公告)日：2009-07-02
申请号：US12295110
申请日：2007-03-28
申请人： Anisse Taleb , Harald Pobloth , Erlendur Karlsson , Erik Norvell
发明人： Anisse Taleb , Harald Pobloth , Erlendur Karlsson , Erik Norvell
IPC分类号： G06F17/10
CPC分类号： H04S3/00 , H03H2017/0072 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： In signal processing using digital filtering the representation of a filter is adapted depending on the filter characteristics. If e.g. a digital filter is represented by filter coefficients for transform bands Nos. 0, 1, . . . , K in the frequency domain, a reduced digital filter having coefficients for combined transform bands, i.e. subsets of the transformed bands, Nos. 0, 1, . . . , L, is formed and only these coefficients are stored. When the actual filtering in the digital filter is to be performed, an actual digital filter is obtained by expanding the coefficients of the reduced digital filter according to a mapping table and then used instead of the original digital filter.
摘要翻译：在使用数字滤波的信号处理中，滤波器的表示根据滤波器特性进行调整。如果例如数字滤波器由变换频带编号0，1，...的滤波器系数表示。。。在频域中的K，具有用于组合变换频带的系数的减小的数字滤波器，即变换频带的子集，编号0，1，...。。。，L，并且仅存储这些系数。当要执行数字滤波器中的实际滤波时，通过根据映射表扩展缩小数字滤波器的系数，然后代替原始数字滤波器来获得实际的数字滤波器。

8. 发明授权

US08266195B2 Filter adaptive frequency resolution 有权
标题翻译：过滤自适应频率分辨率
公开(公告)号：US08266195B2
公开(公告)日：2012-09-11
申请号：US12295110
申请日：2007-03-28
申请人： Anisse Taleb , Harald Pobloth , Erlendur Karlsson , Erik Norvell
发明人： Anisse Taleb , Harald Pobloth , Erlendur Karlsson , Erik Norvell
IPC分类号： G06F17/10
CPC分类号： H04S3/00 , H03H2017/0072 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： In signal processing using digital filtering the representation of a filter is adapted depending on the filter characteristics If e.g. a digital filter is represented by filter coefficients for transform bands Nos. 0, 1, . . . , K in the frequency domain, a reduced digital filter having coefficients for combined transform bands, i.e. subsets of the transformed bands, Nos. 0, 1, . . . , L, is formed and only these coefficients are stored. When the actual filtering in the digital filter is to be performed, an actual digital filter is obtained by expanding the coefficients of the reduced digital filter according to a mapping table and then used instead of the original digital filter.
摘要翻译：在使用数字滤波的信号处理中，滤波器的表示根据滤波器特性进行调整。数字滤波器由变换频带编号0，1，...的滤波器系数表示。。。在频域中的K，具有用于组合变换频带的系数的减小的数字滤波器，即变换频带的子集，编号0，1，...。。。，L，并且仅存储这些系数。当要执行数字滤波器中的实际滤波时，通过根据映射表扩展缩小数字滤波器的系数，然后代替原始数字滤波器来获得实际的数字滤波器。

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