利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

73 条记录 (耗时 0.02 秒)

    CONCEPT FOR COMBINED DYNAMIC RANGE COMPRESSION AND GUIDED CLIPPING PREVENTION FOR AUDIO DEVICES
    2.
    发明公开
    CONCEPT FOR COMBINED DYNAMIC RANGE COMPRESSION AND GUIDED CLIPPING PREVENTION FOR AUDIO DEVICES 审中-公开

    公开(公告)号：EP3951778A1

    公开(公告)日：2022-02-09

    申请号：EP21186145.5

    申请日：2014-10-20

    申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.

    发明人： KUECH, Fabian ,  UHLE, Christian ,  KRATSCHMER, Michael ,  NEUGEBAUER, Bernhard ,  MEIER, Michael ,  BORSUM, Arne

    IPC分类号： G10L21/034 ,  H03G9/00 ,  H03G11/00 ,  G10L19/16 ,  G10L19/008

    摘要： The invention provides a concept for combined dynamic range compression and guided clipping prevention for audio devices. An audio decoder for decoding an audio bitstream and a metadata bitstream related to the audio bitstream according to the concept comprises
    an audio processing chain configured to receive a decoded audio signal derived from the audio bitstream and to adjust characteristics of the audio signal in order to produce an audio output signal, the audio adjustment chain comprising a plurality of adjustment stages including a dynamic range control stage for adjusting a dynamic range of the audio output signal and a guided clipping prevention stage for preventing clipping of the audio output signal; and
    a metadata decoder configured to receive the metadata bitstream and to extract dynamic range control gain sequences and guided clipping prevention gain sequences from the metadata bitstream, at least a part of the dynamic range control gain sequences being supplied to the dynamic range control stage, and at least a part of the guided clipping prevention gain sequences being supplied to the guided clipping prevention stage.

    DEREVERBERATION DEVICE AND HEARING AID
    3.
    发明公开
    DEREVERBERATION DEVICE AND HEARING AID 审中-公开

    公开(公告)号：EP3531719A1

    公开(公告)日：2019-08-28

    申请号：EP19158599.1

    申请日：2019-02-21

    申请人： Rion Co., Ltd.

    发明人： OSAWA, Masatoshi ,  SUNOHARA, Masahiro ,  FUJISAKA, Yoichi ,  FUJISHIMA, Yoko

    IPC分类号： H04R25/00 ,  H04R1/10 ,  G10L21/034 ,  G10L21/0208

    摘要： A dereverberation device includes an input instantaneous value calculation unit configured to calculate an input instantaneous value based on an input signal; a reverberation estimation unit configured to calculate a moving average of the input instantaneous value as a reverberation component; a gain calculation unit configured to calculate, with the input instantaneous value and the reverberation component, a first gain as a basic gain for the input signal; a gain suppression control unit configured to calculate, according to a ratio between the input instantaneous value and the reverberation component, a second gain changing within a range between a predetermined lower limit and a predetermined upper limit, thereby outputting a larger one of the first gain or the second gain as a third gain; and a gain processing unit configured to multiply the input signal by the third gain.

    IMPULSIVE NOISE SUPPRESSION
    8.
    发明公开
    IMPULSIVE NOISE SUPPRESSION 审中-公开
    冲击噪音抑制

    公开(公告)号：EP3289586A1

    公开(公告)日：2018-03-07

    申请号：EP16721587.0

    申请日：2016-04-27

    申请人： Dolby Laboratories Licensing Corporation

    发明人： GUNAWAN, David ,  SHI, Dong ,  DICKINS, Glenn N.

    IPC分类号： G10L21/0208 ,  G10L25/48 ,  G10L21/034

    CPC分类号： G10L21/0208 ,  G10L21/034 ,  G10L25/48 ,  H04R1/326 ,  H04R2410/03

    摘要： Example embodiments disclosed herein relate to impulsive noise suppression. A method of impulsive noise suppression in an audio signal is disclosed. The method includes determining an impulsive noise related feature from a current frame of the audio signal. The method also includes detecting an impulsive noise in the current frame based on the impulsive noise related feature, and in response to detecting the impulsive noise in the current frame, applying a suppression gain to the current frame to suppress the impulsive noise. Corresponding system and computer program product of impulsive noise suppression in an audio signal are also disclosed.

    DECODING DEVICE, METHOD, AND PROGRAM
    9.
    发明公开
    DECODING DEVICE, METHOD, AND PROGRAM 审中-公开
    DECODIERUNGSVORRICHTUNG，-VERFAHREN UND -PROGRAMM

    公开(公告)号：EP3089161A4

    公开(公告)日：2017-07-12

    申请号：EP14873206

    申请日：2014-12-12

    申请人： SONY CORP

    发明人： YAMAMOTO YUKI ,  CHINEN TORU ,  HONMA HIROYUKI ,  SHI RUNYU

    IPC分类号： G10L19/16 ,  G10L19/00 ,  G10L19/005 ,  G10L21/034 ,  H03G7/00

    CPC分类号： H03G7/007 ,  G10L19/26 ,  G10L21/034 ,  H03G7/002 ,  H03G9/00 ,  H03G11/008

    摘要： The present technology relates to a decoding apparatus, a decoding method and a program which make it possible to obtain sound with higher quality. A demultiplexing circuit demultiplexes an input code string into a gain code string and a signal code string. A signal decoding circuit decodes the signal code string to output a time series signal. A gain decoding circuit decodes the gain code string. That is, the gain decoding circuit reads out gain values and gain inclination values at predetermined gain sample positions of the time series signal and interpolation mode information. An interpolation processing unit obtains a gain value at each sample position between two gain sample positions through linear interpolation or non-linear interpolation according to the interpolation mode based on the gain values and the gain inclination values. A gain applying circuit adjusts a gain of the time series signal based on the gain values. The present technology can be applied to a decoding apparatus.

    摘要翻译： 本技术涉及使得可以获得更高质量的声音的解码设备，解码方法和程序。 解复用电路将输入码串解复用为增益码串和信号码串。 信号解码电路解码信号码串以输出时间序列信号。 增益解码电路对增益码串进行解码。 即，增益解码电路读出时序信号和插值模式信息的预定增益采样位置处的增益值和增益倾斜值。 内插处理单元基于增益值和增益倾斜值，根据插值模式通过线性内插或非线性内插获得两个增益样本位置之间的每个样本位置处的增益值。 增益施加电路基于增益值来调整时间序列信号的增益。 本技术可以应用于解码设备。

    Communication device
    10.
    发明授权
    Communication device 有权
    Kommunikationsvorrichtung

    公开(公告)号：EP2899722B1

    公开(公告)日：2017-01-11

    申请号：EP15150456.0

    申请日：2015-01-08

    申请人： FUJITSU LIMITED

    发明人： Sasaki, Hitoshi ,  Endo, Kaori

    IPC分类号： G10L21/034 ,  G10L21/038 ,  G10L25/90

    CPC分类号： G10L25/90 ,  G10L21/034 ,  G10L21/038

    摘要： A communication device includes a memory, and a processor coupled to the memory, configured to extract a component of a voice signal that is input, detect a speech rate of the voice signal, adjust the extracted component, based on the detected speech rate, and add the adjusted component to the voice signal to expand a band of the voice signal.

    摘要翻译： 一种通信装置，包括存储器和耦合到存储器的处理器，被配置为提取输入的语音信号的分量，检测语音信号的语速，基于检测到的语音速率来调整提取的分量;以及 将调整后的组件添加到语音信号中以扩展语音信号的频带。