公开(公告)号：US08468017B2

公开(公告)日：2013-06-18

申请号：US12772190

申请日：2010-05-01

申请人： Eyal Shlomot ,  Jiliang Dai ,  Fuliang Yin ,  Xin Ma ,  Jun Zhang

发明人： Eyal Shlomot ,  Jiliang Dai ,  Fuliang Yin ,  Xin Ma ,  Jun Zhang

IPC分类号： G10L19/12 ,  G10L19/00

CPC分类号： G10L19/06 ,  G10L19/07 ,  G10L2019/0005 ,  G10L2019/0007 ,  H03M7/3082

摘要： The invention discloses a multi-stage quantization method, which includes the following steps: obtaining a reference codebook according to a previous stage codebook; obtaining a current stage codebook according to the reference codebook and a scaling factor; and quantizing an input vector by using the current stage codebook. The invention also discloses a multi-stage quantization device. With the invention, the current stage codebook may be obtained according to the previous stage codebook, by using the correlation between the current stage codebook and the previous stage codebook. As a result, it does not require an independent codebook space for the current stage codebook, which saves the storage space and improves the resource usage efficiency.

摘要翻译： 本发明公开了一种多级量化方法，包括以下步骤：获得根据前一级码本的参考码本; 根据参考码本和缩放因子获得当前阶段码本; 并通过使用当前阶段码本量化输入向量。 本发明还公开了一种多级量化装置。 利用本发明，可以通过使用当前阶段码本和前一级码本之间的相关性，根据前一级码本获得当前级码本。 因此，不需要当前级码本的独立码本空间，可以节省存储空间，提高资源使用效率。

公开(公告)号：US20100217753A1

公开(公告)日：2010-08-26

申请号：US12772190

申请日：2010-05-01

申请人： Eyal Shlomot ,  Jinliang Dai ,  Fuliang Yin ,  Xin Ma ,  Jun Zhang

发明人： Eyal Shlomot ,  Jinliang Dai ,  Fuliang Yin ,  Xin Ma ,  Jun Zhang

IPC分类号： G06F17/30

CPC分类号： G10L19/06 ,  G10L19/07 ,  G10L2019/0005 ,  G10L2019/0007 ,  H03M7/3082

摘要： The invention discloses a multi-stage quantization method, which includes the following steps: obtaining a reference codebook according to a previous stage codebook; obtaining a current stage codebook according to the reference codebook and a scaling factor; and quantizing an input vector by using the current stage codebook. The invention also discloses a multi-stage quantization device. With the invention, the current stage codebook may be obtained according to the previous stage codebook, by using the correlation between the current stage codebook and the previous stage codebook. As a result, it does not require an independent codebook space for the current stage codebook, which saves the storage space and improves the resource usage efficiency.

摘要翻译： 本发明公开了一种多级量化方法，包括以下步骤：获得根据前一级码本的参考码本; 根据参考码本和缩放因子获得当前阶段码本; 并通过使用当前阶段码本量化输入向量。 本发明还公开了一种多级量化装置。 利用本发明，可以通过使用当前阶段码本和前一级码本之间的相关性，根据前一级码本获得当前级码本。 因此，不需要当前级码本的独立码本空间，可以节省存储空间，提高资源使用效率。

公开(公告)号：US08473301B2

公开(公告)日：2013-06-25

申请号：US12772197

申请日：2010-05-01

申请人： Zhe Chen ,  Fuliang Yin ,  Xiaoyu Zhang ,  Jinliang Dai ,  Libin Zhang

发明人： Zhe Chen ,  Fuliang Yin ,  Xiaoyu Zhang ,  Jinliang Dai ,  Libin Zhang

IPC分类号： G10L19/00 ,  G10L21/04

CPC分类号： G10L19/24 ,  G10L21/038

摘要： A method for decoding an audio signal includes: obtaining a lower-band signal component of an audio signal corresponding to a received code stream when the audio signal switches from a first bandwidth to a second bandwidth which is narrower than the first bandwidth; extending the lower-band signal component to obtain higher-band information; performing a time-varying fadeout process on the higher-band information to obtain a processed higher-band signal component; and synthesizing the processed higher-band signal component and the obtained lower-band signal component. With the methods provided in the embodiments of the invention, when an audio signal has a switch from broadband to narrowband, a series of processes such as bandwidth detection, artificial band extension, time-varying fadeout process, and bandwidth synthesis, may be performed to make the switch to have a smooth transition from a broadband signal to a narrowband signal so that a comfortable listening experience may be achieved.

摘要翻译： 一种对音频信号进行解码的方法包括：当音频信号从第一带宽切换到比第一带宽窄的第二带宽时，获得对应于接收到的码流的音频信号的低频带信号分量; 扩展低频带信号分量以获得更高频带信息; 对所述较高频带信息执行时变衰落处理以获得处理的较高频带信号分量; 并且合成所处理的较高频带信号分量和所获得的低频信号分量。 利用本发明的实施例提供的方法，当音频信号具有从宽带到窄带的切换时，可以执行诸如带宽检测，人造带扩展，时变渐变处理和带宽合成之类的一系列处理，以便 使开关从宽带信号到窄带信号的平滑过渡，从而可以实现舒适的听觉体验。

公开(公告)号：US20100228557A1

公开(公告)日：2010-09-09

申请号：US12772197

申请日：2010-05-01

申请人： Zhe Chen ,  Fuliang Yin ,  Xiaoyu Zhang ,  Jinliang Dai ,  Libin Zhang

发明人： Zhe Chen ,  Fuliang Yin ,  Xiaoyu Zhang ,  Jinliang Dai ,  Libin Zhang

IPC分类号： G10L19/00

CPC分类号： G10L19/24 ,  G10L21/038

摘要： A method for decoding an audio signal includes: obtaining a lower-band signal component of an audio signal corresponding to a received code stream when the audio signal switches from a first bandwidth to a second bandwidth which is narrower than the first bandwidth; extending the lower-band signal component to obtain higher-band information; performing a time-varying fadeout process on the higher-band information to obtain a processed higher-band signal component; and synthesizing the processed higher-band signal component and the obtained lower-band signal component. With the methods provided in the embodiments of the invention, when an audio signal has a switch from broadband to narrowband, a series of processes such as bandwidth detection, artificial band extension, time-varying fadeout process, and bandwidth synthesis, may be performed to make the switch to have a smooth transition from a broadband signal to a narrowband signal so that a comfortable listening experience may be achieved.

摘要翻译： 一种对音频信号进行解码的方法包括：当音频信号从第一带宽切换到比第一带宽窄的第二带宽时，获得对应于接收到的码流的音频信号的低频带信号分量; 扩展低频带信号分量以获得更高频带信息; 对所述较高频带信息执行时变衰落处理以获得处理的较高频带信号分量; 并且合成所处理的较高频带信号分量和所获得的低频信号分量。 利用本发明的实施例提供的方法，当音频信号具有从宽带到窄带的切换时，可以执行诸如带宽检测，人造带扩展，时变渐变处理和带宽合成之类的一系列处理 使开关从宽带信号到窄带信号的平滑过渡，从而可以实现舒适的听觉体验。