Audio Decoder, Audio Encoder, Methods for Decoding and Encoding an Audio Signal and Computer Program
    9.
    发明申请
    Audio Decoder, Audio Encoder, Methods for Decoding and Encoding an Audio Signal and Computer Program 有权
    音频解码器,音频编码器,解码和编码音频信号和计算机程序的方法

    公开(公告)号:US20100217607A1

    公开(公告)日:2010-08-26

    申请号:US12694912

    申请日:2010-01-27

    IPC分类号: G06F17/00

    CPC分类号: G10L19/022 G10L19/20

    摘要: An audio decoder for providing a decoded representation of an audio content on the basis of an encoded representation of the audio content comprises a linear-prediction-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of linear-prediction domain parameters associated with the audio frame and a frequency-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of frequency-domain parameters, taking into account a transform window out of a set comprising a plurality of different transform windows. The audio decoder comprises a signal combiner configured to overlap-and-add-time-domain representations of subsequent audio frames encoded in different domains, in order to smoothen a transition between the time-domain representations of the subsequent frames. The set of transform windows comprises one or more windows specifically adapted for a transition between a frequency-domain core mode and a linear-prediction-domain core mode.

    摘要翻译: 一种音频解码器,用于基于音频内容的编码表示来提供音频内容的解码表示,包括线性预测域解码器核心,被配置为基于一组设置提供音频帧的时域表示 与所述音频帧相关联的线性预测域参数和频域解码器核心,所述频域解码器核心被配置为基于一组频域参数来提供音频帧的时域表示,其考虑从 一组包括多个不同的变换窗口。 音频解码器包括信号组合器,其被配置为对在不同域中编码的后续音频帧进行重叠和相加时域表示,以平滑后续帧的时域表示之间的转换。 变换窗口集合包括一个或多个窗口,其特别适用于频域核心模式和线性预测域核心模式之间的转换。

    Audio decoder, audio encoder, methods for decoding and encoding an audio signal and computer program
    10.
    发明授权
    Audio decoder, audio encoder, methods for decoding and encoding an audio signal and computer program 有权
    音频解码器,音频编码器,用于对音频信号进行解码和编码的方法以及计算机程序

    公开(公告)号:US08457975B2

    公开(公告)日:2013-06-04

    申请号:US12694912

    申请日:2010-01-27

    IPC分类号: G10L21/00

    CPC分类号: G10L19/022 G10L19/20

    摘要: An audio decoder for providing a decoded representation of an audio content on the basis of an encoded representation of the audio content comprises a linear-prediction-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of linear-prediction domain parameters associated with the audio frame and a frequency-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of frequency-domain parameters, taking into account a transform window out of a set comprising a plurality of different transform windows. The audio decoder comprises a signal combiner configured to overlap-and-add-time-domain representations of subsequent audio frames encoded in different domains, in order to smoothen a transition between the time-domain representations of the subsequent frames. The set of transform windows comprises one or more windows specifically adapted for a transition between a frequency-domain core mode and a linear-prediction-domain core mode.

    摘要翻译: 一种音频解码器,用于基于音频内容的编码表示来提供音频内容的解码表示,包括线性预测域解码器核心,被配置为基于一组设置提供音频帧的时域表示 与所述音频帧相关联的线性预测域参数和频域解码器核心,所述频域解码器核心被配置为基于一组频域参数来提供音频帧的时域表示,其考虑从 一组包括多个不同的变换窗口。 音频解码器包括信号组合器,其被配置为对在不同域中编码的后续音频帧进行重叠和相加时域表示,以平滑后续帧的时域表示之间的转换。 变换窗口集合包括一个或多个窗口,其特别适用于频域核心模式和线性预测域核心模式之间的转换。