利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

12 条记录 (耗时 0.018 秒)

    APPARATUS AND METHOD FOR ENCODING OR DECODING AN AUDIO SIGNAL USING A TRANSIENT-LOCATION DEPENDENT OVERLAP
    2.
    发明公开
    APPARATUS AND METHOD FOR ENCODING OR DECODING AN AUDIO SIGNAL USING A TRANSIENT-LOCATION DEPENDENT OVERLAP 审中-实审

    公开(公告)号：EP4375996A3

    公开(公告)日：2024-07-31

    申请号：EP24167580.0

    申请日：2014-02-20

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

    发明人： HELMRICH, Christian ,  LECOMTE, Jérémie ,  MARKOVIC, Goran ,  SCHNELL, Markus ,  EDLER, Bernd ,  REUSCHL, Stefan

    IPC分类号： G10L19/025

    CPC分类号： G10L19/022 ,  G10L19/0212

    摘要： A decoder for decoding an audio or image signal comprising a sequence of blocks of converted windowed samples and associated window information (160) identifying a specific window function for a block out of at least three different window functions, comprises: a processor (156) for providing a sequence of blocks of spectral values; a controllable converter (158) for converting the sequence of blocks of spectral values into a time domain representation using an overlap-add processing, wherein the controllable converter (158) is controlled by the window information to apply window functions indicated by the window information to the corresponding block to calculate a decoded audio or image signal, wherein the window is selected from a group of at least three windows comprising a first window (201) having a first overlap length (203), a second window (215) having a second overlap length (218), and a third window (224) having a third overlap length (229) or having no overlap, wherein the first overlap length (203) is greater than the second overlap length (218), and wherein the second overlap length (218) is greater than the third overlap length (229) or greater than an overlap of zero.

    APPARATUS AND METHOD FOR COMFORT NOISE GENERATION MODE SELECTION
    5.
    发明公开
    APPARATUS AND METHOD FOR COMFORT NOISE GENERATION MODE SELECTION 审中-公开
    用于COMFORT NOISE GENERATION模式选择的设备和方法

    公开(公告)号：EP3175447A1

    公开(公告)日：2017-06-07

    申请号：EP15738365.4

    申请日：2015-07-16

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

    发明人： RAVELLI, Emmanuel ,  DIETZ, Martin ,  JAEGERS, Wolfgang ,  NEUKAM, Christian ,  REUSCHL, Stefan

    IPC分类号： G10L19/012

    摘要： An apparatus for encoding audio information is provided. The apparatus for encoding audio information comprises a selector (110) for selecting a comfort noise generation mode from two or more comfort noise generation modes depending on a background noise characteristic of an audio input signal, and an encoding unit (120) for encoding the audio information, wherein the audio information comprises mode information indicating the selected comfort noise generation mode.

    摘要翻译： 提供了一种用于编码音频信息的装置。 用于编码音频信息的设备包括用于根据音频输入信号的背景噪声特性从两个或多个舒适噪声生成模式中选择舒适噪声生成模式的选择器（110），以及用于对音频进行编码的编码单元（120） 信息，其中音频信息包括指示选择的舒适噪声生成模式的模式信息。

    APPARATUS AND METHOD FOR GENERATING AN ENCODED SIGNAL OR FOR DECODING AN ENCODED AUDIO SIGNAL USING A MULTI OVERLAP PORTION
    6.
    发明公开
    APPARATUS AND METHOD FOR GENERATING AN ENCODED SIGNAL OR FOR DECODING AN ENCODED AUDIO SIGNAL USING A MULTI OVERLAP PORTION 有权
    DEVICE AND METHOD FOR产生编码音频或图像信号或用于使用多个重叠部分进行解码瞬态的存在下，经编码的音频或图象信号

    公开(公告)号：EP2959481A1

    公开(公告)日：2015-12-30

    申请号：EP14706528.8

    申请日：2014-02-20

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

    发明人： HELMRICH, Christian ,  LECOMTE, Jérémie ,  MARKOVIC, Goran ,  SCHNELL, Markus ,  EDLER, Bernd ,  REUSCHL, Stefan

    IPC分类号： G10L19/025

    CPC分类号： G10L19/025 ,  G10L19/0212 ,  G10L19/022 ,  H04N19/172 ,  H04N19/176 ,  H04N19/44

    摘要： An apparatus for generating an encoded signal, comprises: a window sequence controller (808) for generating a window sequence information (809) for windowing an audio or image signal, the window sequence information indicating a first window (1500) for generating a first frame of spectral values, a second window function (1502) and at least one third window function (1503) for generating a second frame of spectral values, wherein the first window function (1500), the second window function (1502) and the one or more third window functions overlap within a multi-overlap region (1300); a preprocessor (802) for windowing (902) a second block of samples corresponding to the second window function and the at least one third window functions using an auxiliary window function (1 100) to obtain a second block of windowed samples, and for preprocessing (904) the second block of windowed samples using a folding-in operation of a portion of the second block overlapping with a first block into the multi-overlap portion (1300) to obtain a preprocessed second block of windowed samples having a modified multi-overlap portion; a spectrum converter (804) for applying an aliasing-introducing transform (906) to the first block of samples using the first window function to obtain the first frame of spectral values, for applying the aliasing introducing transform to a first portion of the preprocessed second block of windowed samples using the second window function to obtain a first portion of spectral samples of a second frame and for applying the aliasing introducing transform to a second portion of the preprocessed second block of windowed samples using the one or more third window functions (1503) to obtain a second portion of spectral samples of the second frame; and a processor (806) for processing the first frame and the second frame to obtain encoded frames of the audio or image signal.

    摘要翻译： 为编码信号的生成的装置，包括：用于产生一个窗口序列信息用于音频或图像信号的窗口的窗口序列控制器，所述窗序列信息，其指示第一窗口，用于产生频谱值的第一帧，第二窗函数，并在 用于产生频谱值的第二帧，所述worin第一窗函数，所述第二窗口函数和一个或多个第三窗函数的多重叠区域内重叠至少一个第三窗函数; 加窗相应于第二窗口函数的样本的第二块，并使用辅助窗函数的获得加窗采样的第二块中，频谱转换器，用于施加到混叠引入变换至少一个第三窗口函数的预处理器; 以及用于处理所述第一帧和所述第二帧中的处理器来获取编码的音频或图象信号的帧。

    APPARATUS AND METHOD FOR ENCODING OR DECODING AN AUDIO SIGNAL USING A TRANSIENT-LOCATION DEPENDENT OVERLAP
    9.
    发明公开
    APPARATUS AND METHOD FOR ENCODING OR DECODING AN AUDIO SIGNAL USING A TRANSIENT-LOCATION DEPENDENT OVERLAP 审中-公开
    使用瞬变位置相关重叠对音频信号进行编码或解码的装置和方法

    公开(公告)号：EP2959482A1

    公开(公告)日：2015-12-30

    申请号：EP14706529.6

    申请日：2014-02-20

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

    发明人： HELMRICH, Christian ,  LECOMTE, Jérémie ,  MARKOVIC, Goran ,  SCHNELL, Markus ,  EDLER, Bernd ,  REUSCHL, Stefan

    IPC分类号： G10L19/025

    CPC分类号： G10L19/025 ,  G10L19/0212 ,  G10L19/022 ,  H04N19/172 ,  H04N19/176 ,  H04N19/44

    摘要： An apparatus for generating an encoded signal includes: a window sequence controller for generating a window sequence information for windowing an audio or image signal, the window sequence information indicating a first window for generating a first frame of spectral values, a second window function and at least one third window function for generating a second frame of spectral values, wherein the first window function, the second window function and the one or more third window functions overlap within a multi-overlap region; a preprocessor for windowing a second block of samples corresponding to the second window function and the at least one third window functions using an auxiliary window function to acquire a second block of windowed samples, a spectrum converter for applying an aliasing-introducing transform; and a processor for processing the first frame and the second frame to acquire encoded frames of the audio or image signal.

    摘要翻译： 一种用于对音频或图像信号进行编码的设备，包括：可控加窗器（102），用于对音频或图像信号进行加窗以提供加窗样本块的序列; 转换器（104），用于将加窗采样块的序列转换成包括频谱值帧序列的频谱表示; 瞬态位置检测器（106），用于识别帧的瞬时预测区域内的瞬态的位置; 和控制器（108），用于响应于所述瞬变的识别位置（210-213），控制所述可控制开窗器（102）将具有指定重叠长度的特定窗口应用于所述音频或图像信号，其中，所述控制器 ）被配置为从包括具有第一重叠长度（203）的第一窗口（201），具有第二重叠长度（218）的第二窗口（215）和具有第二重叠长度的第三窗口（215）的至少三个窗口的组中选择特定窗口 具有第三重叠长度（229）或不具有重叠的窗口（224），其中所述第一重叠长度（203）大于所述第二重叠长度（218），并且其中所述第二重叠长度（218）大于所述第三重叠长度 重叠长度（229）或大于零的重叠，其中所述特定窗口是基于所述瞬态位置来选择的，使得两个时间相邻重叠窗口中的一个在所述瞬态的位置处具有系数，并且所述两个时间相邻重叠窗口中的另一个具有系数， 相邻的重叠窗口 s在瞬态的位置处具有第二窗系数，其中第二系数比第一系数大至少九倍。

    APPARATUS AND METHOD FOR ENCODING OR DECODING AN AUDIO SIGNAL USING A TRANSIENT-LOCATION DEPENDENT OVERLAP
    10.
    发明公开
    APPARATUS AND METHOD FOR ENCODING OR DECODING AN AUDIO SIGNAL USING A TRANSIENT-LOCATION DEPENDENT OVERLAP 审中-实审

    公开(公告)号：EP4375996A2

    公开(公告)日：2024-05-29

    申请号：EP24167580.0

    申请日：2014-02-20

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

    发明人： HELMRICH, Christian ,  LECOMTE, Jérémie ,  MARKOVIC, Goran ,  SCHNELL, Markus ,  EDLER, Bernd ,  REUSCHL, Stefan

    IPC分类号： G10L19/02

    CPC分类号： G10L19/022 ,  G10L19/0212

    摘要： A decoder for decoding an audio or image signal comprising a sequence of blocks of converted windowed samples and associated window information (160) identifying a specific window function for a block out of at least three different window functions, comprises: a processor (156) for providing a sequence of blocks of spectral values; a controllable converter (158) for converting the sequence of blocks of spectral values into a time domain representation using an overlap-add processing, wherein the controllable converter (158) is controlled by the window information to apply window functions indicated by the window information to the corresponding block to calculate a decoded audio or image signal, wherein the window is selected from a group of at least three windows comprising a first window (201) having a first overlap length (203), a second window (215) having a second overlap length (218), and a third window (224) having a third overlap length (229) or having no overlap, wherein the first overlap length (203) is greater than the second overlap length (218), and wherein the second overlap length (218) is greater than the third overlap length (229) or greater than an overlap of zero.