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    DOWNSCALED DECODING
    4.
    发明公开
    DOWNSCALED DECODING 审中-公开
    VERKLEINERTE DECODIERUNG

    公开(公告)号：EP3107096A1

    公开(公告)日：2016-12-21

    申请号：EP15189398.9

    申请日：2015-10-12

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： SCHNELL, Markus ,  LUTZKY, Manfred ,  FOTOPOULOU, Eleni ,  SCHMIDT, Konstantin ,  BENNDORF, Conrad ,  TOMASEK, Adrian ,  ALBERT, Tobias ,  SEIDL, Timon

    IPC分类号： G10L19/02 ,  G10L19/022

    CPC分类号： G10L19/0212 ,  G10L19/022

    摘要： A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of 1/4 of the frame length.

    摘要翻译： 如果用于缩小音频解码的合成窗口是非缩减音频解码过程中涉及的参考合成窗口的下采样版本，则可以更有效地和/或改进符合性维护，缩减版本的音频解码过程可以通过下采样 下采样因子通过下采样采样率和原始采样率偏离，并使用帧长度的1/4的段中的段插值下采样。

    CONTROLLING BANDWIDTH IN ENCODERS AND/OR DECODERS
    6.
    发明公开
    CONTROLLING BANDWIDTH IN ENCODERS AND/OR DECODERS 审中-公开

    公开(公告)号：EP3483882A1

    公开(公告)日：2019-05-15

    申请号：EP17201082.9

    申请日：2017-11-10

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： SCHNELL, Markus ,  RAVELLI, Emmanuel ,  BENNDORF, Conrad ,  ALBERT, Tobias ,  LUTZKY, Manfred ,  TOMASEK, Adrian

    IPC分类号： G10L19/16 ,  G10L19/18 ,  G10L19/02 ,  G10L19/22 ,  G10L19/03

    摘要： There are provided examples for encoding and/or decoding information signals (e.g., audio signals). In one example, there is provided an encoder apparatus comprising:
    a plurality of frequency domain, FD, encoder tools for encoding an information signal, the information signal presenting a plurality of frames; and
    an encoder bandwidth detector and controller (39) configured to select a bandwidth for at least a subgroup (33, 36) of the plurality of FD encoder tools, the subgroup (33, 36) including less FD encoder tools than the plurality of FD encoder tools, on the basis of information signal characteristics so that at least one of the FD encoder tools of the subgroup (33, 36) has a different bandwidth with respect to at least one of the FD encoder tools which are not in the subgroup (33, 36).
    In one example, there is provided a decoder apparatus (40, 40a) comprising a plurality of FD decoder tools (43-48a) for decoding an information signal encoded in a bitstream, wherein:
    the FD decoder tools are divided:
    - in a subgroup comprising at least one FD decoder tool (43, 45);
    - in remaining FD decoder tools comprising at least one FD decoder tool (44, 46, 48a);

    wherein the decoder apparatus (40, 40a) is configured so as to choose a bandwidth for at least one of the plurality of decoder tools of the subgroup (43, 45) on the basis of bandwidth information included in the bitstream so that the at least one of the plurality of decoder tools of the subgroup (43, 45) performs signal processing a different bandwidth with respect to at least one of the remaining FD decoder tools of the plurality of decoder tools (44, 46, 48a).