Sub-band voice codec with multi-stage codebooks and redundant coding
    1.
    发明授权
    Sub-band voice codec with multi-stage codebooks and redundant coding 有权
    具有多级码本和冗余编码的子带语音编解码器

    公开(公告)号:US07904293B2

    公开(公告)日:2011-03-08

    申请号:US11973689

    申请日:2007-10-09

    IPC分类号: G10L15/00

    摘要: Techniques and tools related to coding and decoding of audio information are described. For example, redundant coded information for decoding a current frame includes signal history information associated with only a portion of a previous frame. As another example, redundant coded information for decoding a coded unit includes parameters for a codebook stage to be used in decoding the current coded unit only if the previous coded unit is not available. As yet another example, coded audio units each include a field indicating whether the coded unit includes main encoded information representing a segment of an audio signal, and whether the coded unit includes redundant coded information for use in decoding main encoded information.

    摘要翻译: 描述与音频信息的编码和解码相关的技术和工具。 例如,用于解码当前帧的冗余编码信息包括仅与先前帧的一部分相关联的信号历史信息。 作为另一示例,用于对已编码单元进行解码的冗余编码信息包括仅当前一编码单元不可用时才将用于解码当前编码单元的码本级的参数。 作为另一示例,编码音频单元各自包括指示编码单元是否包括表示音频信号的段的主编码信息的字段,以及编码单元是否包括用于解码主编码信息的冗余编码信息。

    Sub-band voice codec with multi-stage codebooks and redundant coding
    2.
    发明授权
    Sub-band voice codec with multi-stage codebooks and redundant coding 有权
    具有多级码本和冗余编码的子带语音编解码器

    公开(公告)号:US07734465B2

    公开(公告)日:2010-06-08

    申请号:US11973690

    申请日:2007-10-09

    IPC分类号: G10L21/00

    摘要: Techniques and tools related to coding and decoding of audio information are described. For example, redundant coded information for decoding a current frame includes signal history information associated with only a portion of a previous frame. As another example, redundant coded information for decoding a coded unit includes parameters for a codebook stage to be used in decoding the current coded unit only if the previous coded unit is not available. As yet another example, coded audio units each include a field indicating whether the coded unit includes main encoded information representing a segment of an audio signal, and whether the coded unit includes redundant coded information for use in decoding main encoded information.

    摘要翻译: 描述与音频信息的编码和解码相关的技术和工具。 例如,用于解码当前帧的冗余编码信息包括仅与先前帧的一部分相关联的信号历史信息。 作为另一示例,用于对已编码单元进行解码的冗余编码信息包括仅当前一编码单元不可用时才将用于解码当前编码单元的码本级的参数。 作为另一示例,编码音频单元各自包括指示编码单元是否包括表示音频信号的段的主编码信息的字段,以及编码单元是否包括用于解码主编码信息的冗余编码信息。

    Audio codec post-filter
    3.
    发明授权
    Audio codec post-filter 有权
    音频编解码后置滤波器

    公开(公告)号:US07707034B2

    公开(公告)日:2010-04-27

    申请号:US11142603

    申请日:2005-05-31

    IPC分类号: G10L19/00

    CPC分类号: G10L19/26

    摘要: Techniques and tools are described for processing reconstructed audio signals. For example, a reconstructed audio signal is filtered in the time domain using filter coefficients that are calculated, at least in part, in the frequency domain. As another example, producing a set of filter coefficients for filtering a reconstructed audio signal includes clipping one or more peaks of a set of coefficient values. As yet another example, for a sub-band codec, in a frequency region near an intersection between two sub-bands, a reconstructed composite signal is enhanced.

    摘要翻译: 描述了处理重建音频信号的技术和工具。 例如,使用至少部分地在频域中计算的滤波器系数在时域中对重构音频信号进行滤波。 作为另一示例,产生用于对重构音频信号进行滤波的滤波器系数的集合包括限定一组系数值的一个或多个峰值。 作为另一示例,对于子带编解码器,在两个子带之间的交叉点附近的频率区域中,重构的复合信号被增强。

    Robust decoder
    4.
    发明授权
    Robust decoder 有权
    强大的解码器

    公开(公告)号:US07962335B2

    公开(公告)日:2011-06-14

    申请号:US12502984

    申请日:2009-07-14

    IPC分类号: G10L21/02

    CPC分类号: G10L21/045 G10L19/005

    摘要: Techniques and tools related to delayed or lost coded audio information are described. For example, a concealment technique for one or more missing frames is selected based on one or more factors that include a classification of each of one or more available frames near the one or more missing frames. As another example, information from a concealment signal is used to produce substitute information that is relied on in decoding a subsequent frame. As yet another example, a data structure having nodes corresponding to received packet delays is used to determine a desired decoder packet delay value.

    摘要翻译: 描述与延迟或丢失的编码音频信息相关的技术和工具。 例如,基于一个或多个因素选择一个或多个缺失帧的隐藏技术,所述一个或多个因素包括一个或多个缺失帧附近的一个或多个可用帧中的每一个的分类。 作为另一示例,来自隐藏信号的信息用于产生在对后续帧进行解码时所依赖的替代信息。 作为另一示例,使用具有与接收到的分组延迟相对应的节点的数据结构来确定期望的解码器分组延迟值。

    Robust decoder
    5.
    发明授权
    Robust decoder 有权
    强大的解码器

    公开(公告)号:US07831421B2

    公开(公告)日:2010-11-09

    申请号:US11142602

    申请日:2005-05-31

    IPC分类号: G10L21/02

    CPC分类号: G10L21/045 G10L19/005

    摘要: Techniques and tools related to delayed or lost coded audio information are described. For example, a concealment technique for one or more missing frames is selected based on one or more factors that include a classification of each of one or more available frames near the one or more missing frames. As another example, information from a concealment signal is used to produce substitute information that is relied on in decoding a subsequent frame. As yet another example, a data structure having nodes corresponding to received packet delays is used to determine a desired decoder packet delay value.

    摘要翻译: 描述与延迟或丢失的编码音频信息相关的技术和工具。 例如,基于一个或多个因素选择一个或多个缺失帧的隐藏技术,所述一个或多个因素包括一个或多个缺失帧附近的一个或多个可用帧中的每一个的分类。 作为另一示例,来自隐藏信号的信息用于产生在对后续帧进行解码时所依赖的替代信息。 作为另一示例,使用具有与接收到的分组延迟相对应的节点的数据结构来确定期望的解码器分组延迟值。

    ROBUST DECODER
    6.
    发明申请
    ROBUST DECODER 有权
    强大的解码器

    公开(公告)号:US20090276212A1

    公开(公告)日:2009-11-05

    申请号:US12502984

    申请日:2009-07-14

    IPC分类号: G10L21/02

    CPC分类号: G10L21/045 G10L19/005

    摘要: Techniques and tools related to delayed or lost coded audio information are described. For example, a concealment technique for one or more missing frames is selected based on one or more factors that include a classification of each of one or more available frames near the one or more missing frames. As another example, information from a concealment signal is used to produce substitute information that is relied on in decoding a subsequent frame. As yet another example, a data structure having nodes corresponding to received packet delays is used to determine a desired decoder packet delay value.

    摘要翻译: 描述与延迟或丢失的编码音频信息相关的技术和工具。 例如,基于一个或多个因素来选择一个或多个缺失帧的隐藏技术,所述一个或多个因素包括一个或多个缺失帧附近的一个或多个可用帧中的每一个的分类。 作为另一示例,来自隐藏信号的信息用于产生在对后续帧进行解码时所依赖的替代信息。 作为另一示例,使用具有与接收到的分组延迟相对应的节点的数据结构来确定期望的解码器分组延迟值。

    Sub-band voice codec with multi-stage codebooks and redundant coding
    7.
    发明授权
    Sub-band voice codec with multi-stage codebooks and redundant coding 有权
    具有多级码本和冗余编码的子带语音编解码器

    公开(公告)号:US07280960B2

    公开(公告)日:2007-10-09

    申请号:US11197914

    申请日:2005-08-04

    IPC分类号: G10L21/00

    摘要: Techniques and tools related to coding and decoding of audio information are described. For example, redundant coded information for decoding a current frame includes signal history information associated with only a portion of a previous frame. As another example, redundant coded information for decoding a coded unit includes parameters for a codebook stage to be used in decoding the current coded unit only if the previous coded unit is not available. As yet another example, coded audio units each include a field indicating whether the coded unit includes main encoded information representing a segment of an audio signal, and whether the coded unit includes redundant coded information for use in decoding main encoded information.

    摘要翻译: 描述与音频信息的编码和解码相关的技术和工具。 例如,用于解码当前帧的冗余编码信息包括仅与先前帧的一部分相关联的信号历史信息。 作为另一示例,用于对已编码单元进行解码的冗余编码信息包括仅当前一编码单元不可用时才将用于解码当前编码单元的码本级的参数。 作为另一示例,编码音频单元各自包括指示编码单元是否包括表示音频信号的段的主编码信息的字段,以及编码单元是否包括用于解码主编码信息的冗余编码信息。

    Robust decoder
    8.
    发明授权
    Robust decoder 有权
    强大的解码器

    公开(公告)号:US07590531B2

    公开(公告)日:2009-09-15

    申请号:US11197792

    申请日:2005-08-04

    IPC分类号: G10L21/02

    CPC分类号: G10L21/045 G10L19/005

    摘要: Techniques and tools related to delayed or lost coded audio information are described. For example, a concealment technique for one or more missing frames is selected based on one or more factors that include a classification of each of one or more available frames near the one or more missing frames. As another example, information from a concealment signal is used to produce substitute information that is relied on in decoding a subsequent frame. As yet another example, a data structure having nodes corresponding to received packet delays is used to determine a desired decoder packet delay value.

    摘要翻译: 描述与延迟或丢失的编码音频信息相关的技术和工具。 例如,基于一个或多个因素选择一个或多个缺失帧的隐藏技术,所述一个或多个因素包括一个或多个缺失帧附近的一个或多个可用帧中的每一个的分类。 作为另一示例,来自隐藏信号的信息用于产生在对后续帧进行解码时所依赖的替代信息。 作为另一示例,使用具有与接收到的分组延迟相对应的节点的数据结构来确定期望的解码器分组延迟值。

    AUDIO ENCODING AND DECODING WITH INTRA FRAMES AND ADAPTIVE FORWARD ERROR CORRECTION
    10.
    发明申请
    AUDIO ENCODING AND DECODING WITH INTRA FRAMES AND ADAPTIVE FORWARD ERROR CORRECTION 审中-公开
    音频编码和解码与内部框架和自适应前向错误校正

    公开(公告)号:US20100125455A1

    公开(公告)日:2010-05-20

    申请号:US12692417

    申请日:2010-01-22

    IPC分类号: G10L19/08

    摘要: Various strategies for rate/quality control and loss resiliency in an audio codec are described. The various strategies can be used in combination or independently. For example, a real-time speech codec uses intra frame coding/decoding, adaptive multi-mode forward error correction [“FEC”], and rate/quality control techniques. Intra frames help a decoder recover quickly from packet losses, while compression efficiency is still emphasized with predicted frames. Various strategies for inserting intra frames and signaling intra/predicted frames are described. With the adaptive multi-mode FEC, an encoder adaptively selects between multiple modes to efficiently and quickly provide a level of FEC that takes into account the bandwidth currently available for FEC. The FEC information itself may be predictively encoded and decoded relative to primary encoded information. Various rate/quality and FEC control strategies allow additional adaptation to available bandwidth and network conditions.

    摘要翻译: 描述了音频编解码器中的速率/质量控制和丢失弹性的各种策略。 各种策略可以组合使用或独立使用。 例如,实时语音编解码器使用帧内编码/解码,自适应多模式前向纠错[“FEC”]和速率/质量控制技术。 帧内帧帮助解码器从分组丢失中快速恢复,而预测帧仍然强调压缩效率。 描述了用于插入帧内和信令帧内/预测帧的各种策略。 利用自适应多模式FEC,编码器在多种模式之间自适应地选择以有效且快速地提供考虑到当前可用于FEC的带宽的FEC级别。 FEC信息本身可以相对于主编码信息进行预测编码和解码。 各种速率/质量和FEC控制策略允许对可用带宽和网络条件进行额外的调整。