公开(公告)号：US08160889B2

公开(公告)日：2012-04-17

申请号：US12015907

申请日：2008-01-17

申请人： Bernd Iser ,  Gerhard Nüssle ,  Gerhard Uwe Schmidt

发明人： Bernd Iser ,  Gerhard Nüssle ,  Gerhard Uwe Schmidt

IPC分类号： G10L19/00 ,  G10L11/00 ,  G10L19/14 ,  G10L21/02 ,  H04R5/00 ,  H03G5/00

CPC分类号： G10L21/038

摘要： A bandwidth extension system extends the bandwidth of an acoustic signal. By shifting a portion of the signal by a frequency value, the system generates an upper bandwidth extension signal. An extended bandwidth acoustic signal may be generated from the acoustic signal, the upper bandwidth extension signal, and/or a lower bandwidth extension signal.

摘要翻译： 带宽扩展系统扩展了声信号的带宽。 通过将信号的一部分移动一个频率值，系统产生一个较高的带宽扩展信号。 可以从声信号，较高带宽扩展信号和/或较低带宽扩展信号产生扩展带宽声信号。

公开(公告)号：US20090030699A1

公开(公告)日：2009-01-29

申请号：US12047874

申请日：2008-03-13

申请人： Bernd Iser ,  Gerhard Uwe Schmidt

发明人： Bernd Iser ,  Gerhard Uwe Schmidt

IPC分类号： G10L19/00

CPC分类号： G10L21/038 ,  G10L2019/0007

摘要： A codebook spectral envelope may be used to extend the bandwidth of a bandwidth limited signal. A system includes codebooks that list codebook spectral envelopes. A codebook spectral envelope may be selected based on a characteristic of the spectral envelope of the bandwidth limited signal. Modifications of selected codebook spectral envelopes may generate a bandwidth extension signal that may be added to the bandwidth limited signal to improve the quality of the signal.

摘要翻译： 码本频谱包络可以用于扩展带宽限制信号的带宽。 系统包括列出码本频谱包络的​​码本。 可以基于带宽限制信号的频谱包络的​​特性来选择码本频谱包络。 所选码本频谱包络的​​修改可以产生可以被添加到带宽限制信号的带宽扩展信号，以提高信号的质量。

公开(公告)号：US07792680B2

公开(公告)日：2010-09-07

申请号：US11544470

申请日：2006-10-06

申请人： Bernd Iser ,  Gerhard Uwe Schmidt

发明人： Bernd Iser ,  Gerhard Uwe Schmidt

IPC分类号： G10L19/12

CPC分类号： G10L21/038 ,  G10L21/0264

摘要： A method for extending the spectral bandwidth of an excitation signal of a speech signal includes determining a bandwidth limited excitation signal of the speech signal, and applying a nonlinear function to the excitation signal for generating a bandwidth extended excitation signal.

摘要翻译： 一种用于扩展语音信号的激励信号的频谱带宽的方法包括确定语音信号的带宽限制激励信号，以及向激励信号应用非线性函数以产生带宽扩展激励信号。

公开(公告)号：US08565415B2

公开(公告)日：2013-10-22

申请号：US12246994

申请日：2008-10-07

申请人： Gerhard Uwe Schmidt ,  Bernd Iser

发明人： Gerhard Uwe Schmidt ,  Bernd Iser

IPC分类号： H04M9/08

CPC分类号： H04M9/082 ,  G10L2021/02082 ,  H04M1/6075

摘要： A signal processing system enhances communication. When an audio signal is detected, an echo component of the detected audio signal may be estimated. A near party communication device may receive an audio signal from a remote party communication device. A characteristic of the received audio signal may be adjusted based on the echo component of the detected audio signal.

摘要翻译： 信号处理系统增强通信。 当检测到音频信号时，可以估计检测到的音频信号的回波分量。 近端通信设备可以从远端方通信设备接收音频信号。 可以基于检测到的音频信号的回波分量来调整所接收的音频信号的特性。

公开(公告)号：US20090225980A1

公开(公告)日：2009-09-10

申请号：US12246994

申请日：2008-10-07

申请人： Gerhard Uwe Schmidt ,  Bernd Iser

发明人： Gerhard Uwe Schmidt ,  Bernd Iser

IPC分类号： H04M9/08 ,  H04R3/00

CPC分类号： H04M9/082 ,  G10L2021/02082 ,  H04M1/6075

摘要： A signal processing system enhances communication. When an audio signal is detected, an echo component of the detected audio signal may be estimated. A near party communication device may receive an audio signal from a remote party communication device. A characteristic of the received audio signal may be adjusted based on the echo component of the detected audio signal.

摘要翻译： 信号处理系统增强通信。 当检测到音频信号时，可以估计检测到的音频信号的回波分量。 近端通信设备可以从远端方通信设备接收音频信号。 可以基于检测到的音频信号的回波分量来调整所接收的音频信号的特性。

公开(公告)号：US07783479B2

公开(公告)日：2010-08-24

申请号：US11343938

申请日：2006-01-31

申请人： Bernd Iser ,  Gerhard Uwe Schmidt

发明人： Bernd Iser ,  Gerhard Uwe Schmidt

IPC分类号： G10L19/10

CPC分类号： G10L21/038

摘要： A system for use in providing a wideband signal from a received narrowband signal is set forth. The system comprises an extracted narrowband feature vector that corresponds to at least one characteristic of the narrowband signal. A narrowband codebook having one or more narrowband codebook index vectors is also employed, where each narrowband codebook index vector is associated with one or more corresponding narrowband codebook parameters. An analyzer is provided to correlate the extracted narrowband feature vector with an entry in the narrowband codebook. More particularly, the analyzer is responsive to the extracted narrowband feature vector to identify the narrowband codebook feature index vector that best matches the extracted narrowband feature vector. A signal mapper is provided to execute a mapping function of the extracted narrowband feature vector and/or the narrowband codebook index vector identified by the analyzer. In executing the mapping function, the signal mapper uses mapping parameters that correspond to the narrowband codebook entry associated with the narrowband codebook index vector identified by the analyzer. The signal mapper generates at least one estimated wideband feature vector through execution of the mapping function. The estimated wideband feature vector is used by a signal generator to generate a wideband signal that corresponds to an extended bandwidth version of the received narrowband signal.

摘要翻译： 提出了一种用于从接收的窄带信号提供宽带信号的系统。 该系统包括对应于窄带信号的至少一个特征的提取的窄带特征向量。 还采用具有一个或多个窄带码本索引矢量的窄带码本，其中每个窄带码本索引矢量与一个或多个相应的窄带码本参数相关联。 提供分析器以将所提取的窄带特征向量与窄带码本中的条目相关联。 更具体地，分析器响应于所提取的窄带特征向量来识别与提取的窄带特征向量最佳匹配的窄带码本特征索引向量。 提供信号映射器以执行由分析器识别的所提取的窄带特征向量和/或窄带码本索引矢量的映射函数。 在执行映射功能时，信号映射器使用与由分析器识别的窄带码本索引矢量相关联的窄带码本条目对应的映射参数。 信号映射器通过执行映射函数生成至少一个估计的宽带特征向量。 估计的宽带特征矢量由信号发生器使用以产生对应于接收的窄带信号的扩展带宽版本的宽带信号。

公开(公告)号：US07693714B2

公开(公告)日：2010-04-06

申请号：US11343939

申请日：2006-01-31

申请人： Bernd Iser ,  Gerhard Uwe Schmidt

发明人： Bernd Iser ,  Gerhard Uwe Schmidt

IPC分类号： G10L15/06

CPC分类号： G10L21/038

摘要： An electronic communication system is set forth that includes the transmission of a narrowband speech signal corresponding to a narrowband version of speech utterances of a speaker as well as the transmission of speaker-dependent data. The speaker-dependent data may be used to correlate narrowband versions of the speech utterances of the speaker with corresponding wideband versions of the speech utterances of the speaker. Both the narrowband speech signal and the speaker-dependent data are received by a receiving party. A receiver at the receiving party uses the narrowband speech signal and the speaker-dependent data to generate a wideband speech signal corresponding to a wideband version of the speech utterances of the speaker.

摘要翻译： 提出了一种电子通信系统，其包括对应于扬声器的语音话语的窄带版本的窄带语音信号的传输以及与扬声器有关的数据的传输。 与扬声器相关的数据可以用于将扬声器的语音话语的窄带版本与扬声器的语音话语的相应宽带版本相关联。 窄带语音信号和与扬声器相关的数据均由接收方接收。 接收方的接收机使用窄带语音信号和与扬声器相关的数据来产生对应于扬声器的语音话音的宽带版本的宽带语音信号。

公开(公告)号：US07630881B2

公开(公告)日：2009-12-08

申请号：US11229027

申请日：2005-09-16

申请人： Bernd Iser ,  Gerhard Uwe Schmidt

发明人： Bernd Iser ,  Gerhard Uwe Schmidt

IPC分类号： G10L19/00

CPC分类号： G10L21/038

摘要： A system extends a bandwidth of bandlimited audio signals by analyzing bandlimited audio signals at a transmission cycle rate. The analyzer may obtain a bandlimited parameter at a transmission cycle rate. A mapping device or logic in the system obtains a wideband parameter based on the bandlimited parameter. An audio signal generator generates a highband and/or lowband audio signal based on the wideband parameter at the transmission cycle rate. In some systems, the bandlimited audio signal is analyzed at the transmission cycle rate. The highband and/or lowband audio signals and the combined wideband audio signal are generated at the transmission cycle rate.

摘要翻译： 系统通过以传输周期速率分析带宽音频信号来扩展频带限制音频信号的带宽。 分析器可以以传输周期速率获得带限参数。 系统中的映射设备或逻辑基于带限参数获得宽带参数。 音频信号发生器基于传输周期速率下的宽带参数生成高频带和/或低频带音频信号。 在一些系统中，以传输周期速率分析带限音频信号。 以传输周期速率产生高频带和/或低频带音频信号和组合宽带音频信号。

公开(公告)号：US08190429B2

公开(公告)日：2012-05-29

申请号：US12047874

申请日：2008-03-13

申请人： Bernd Iser ,  Gerhard Uwe Schmidt

发明人： Bernd Iser ,  Gerhard Uwe Schmidt

IPC分类号： G10L19/12

CPC分类号： G10L21/038 ,  G10L2019/0007

摘要： A codebook spectral envelope may be used to extend the bandwidth of a bandwidth limited signal. A system includes codebooks that list codebook spectral envelopes. A codebook spectral envelope may be selected based on a characteristic of the spectral envelope of the bandwidth limited signal. Modifications of selected codebook spectral envelopes may generate a bandwidth extension signal that may be added to the bandwidth limited signal to improve the quality of the signal.

摘要翻译： 码本频谱包络可以用于扩展带宽限制信号的带宽。 系统包括列出码本频谱包络的​​码本。 可以基于带宽限制信号的频谱包络的​​特性来选择码本频谱包络。 所选码本频谱包络的​​修改可以产生可以被添加到带宽限制信号的带宽扩展信号，以提高信号的质量。

公开(公告)号：US20080195392A1

公开(公告)日：2008-08-14

申请号：US12015907

申请日：2008-01-17

申请人： Bernd Iser ,  Gerhard Nussle ,  Gerhard Uwe Schmidt

发明人： Bernd Iser ,  Gerhard Nussle ,  Gerhard Uwe Schmidt

IPC分类号： G10L13/00

CPC分类号： G10L21/038

摘要： A bandwidth extension system extends the bandwidth of an acoustic signal. By shifting a portion of the signal by a frequency value, the system generates an upper bandwidth extension signal. An extended bandwidth acoustic signal may be generated from the acoustic signal, the upper bandwidth extension signal, and/or a lower bandwidth extension signal.

摘要翻译： 带宽扩展系统扩展了声信号的带宽。 通过将信号的一部分移动一个频率值，系统产生一个较高的带宽扩展信号。 可以从声信号，较高带宽扩展信号和/或较低带宽扩展信号产生扩展带宽声信号。