Method and apparatus to encode and/or decode signal using bandwidth extension technology
    1.
    发明授权
    Method and apparatus to encode and/or decode signal using bandwidth extension technology 有权
    使用带宽扩展技术对信号进行编码和/或解码的方法和装置

    公开(公告)号:US07864843B2

    公开(公告)日:2011-01-04

    申请号:US11757528

    申请日:2007-06-04

    IPC分类号: H04N11/02 G10L13/00

    CPC分类号: G10L19/0208 G10L21/038

    摘要: A method and apparatus to perform bandwidth extension encoding and decoding encodes and/or decodes a high frequency signal using an excitation signal for a low frequency signal encoded in a time domain or a frequency domain or using an excitation spectrum for the low frequency signal. Accordingly, although an audio signal is encoded or decoded using a small number of bits, the quality of sound corresponding to a signal in a high frequency band does not degrade. Therefore, a coding efficiency of the audio signal can be maximized.

    摘要翻译: 执行带宽扩展编码和解码的方法和装置使用用于在时域或频域中编码的低频信号的激励信号或者使用低频信号的激励频谱对高频信号进行编码和/或解码。 因此,尽管使用少量的比特对音频信号进行编码或解码,但是与高频带中的信号相对应的声音质量不会降低。 因此,可以使音频信号的编码效率最大化。

    Apparatus and method of wideband decoding to synthesize a decoded excitation signal with a generated high frequency band signal
    2.
    发明授权
    Apparatus and method of wideband decoding to synthesize a decoded excitation signal with a generated high frequency band signal 失效
    宽带解码的装置和方法,用于产生高频带信号来合成解码的激励信号

    公开(公告)号:US07498959B2

    公开(公告)日:2009-03-03

    申请号:US11766322

    申请日:2007-06-21

    IPC分类号: H03M7/12

    CPC分类号: G10L19/0208 G10L21/038

    摘要: Encoding and/or decoding a wideband signal produces high frequency band spectra from low frequency band spectral information. Linear prediction filter coefficients are determined for the entire wideband spectrum of an input signal. An energy value in each of a plurality of sub-bands in the high frequency band is determined and encoded. The short-term correlation removed input signal is then down-sampled to form a low frequency band signal. At a decoder, the high frequency band signal is generated using the encoded low frequency band signal. The energy in each sub-band of the high frequency band is adjusted using the encoded energy value. Thus, the spectral envelope for the entire wideband signal is synthesized and decoded using linear predictive synthesis.

    摘要翻译: 编码和/或解码宽带信号从低频带频谱信息产生高频带频谱。 对于输入信号的整个宽带谱确定线性预测滤波器系数。 确定并编码高频带中的多个子带中的每一个中的能量值。 然后将短期相关去除输入信号进行下采样以形成低频带信号。 在解码器处,使用编码的低频带信号产生高频带信号。 使用编码的能量值来调整高频带的每个子带中的能量。 因此,使用线性预测合成来合成和解码整个宽带信号的频谱包络。

    METHOD AND APPARATUS FOR ADAPTIVELY ENCODING AND DECODING HIGH FREQUENCY BAND
    3.
    发明申请
    METHOD AND APPARATUS FOR ADAPTIVELY ENCODING AND DECODING HIGH FREQUENCY BAND 有权
    用于自适应编码和解码高频带的方法和装置

    公开(公告)号:US20110313778A1

    公开(公告)日:2011-12-22

    申请号:US13220193

    申请日:2011-08-29

    IPC分类号: G10L21/00

    CPC分类号: G10L21/038

    摘要: Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized.

    摘要翻译: 提供了一种用于对音频信号进行编码和解码的方法和装置。 根据本申请,通过使用低于预设频带的低频信号,在时域或频域中自适应地编码或解码高于预置频带的高频带的信号。 因此,即使当通过使用少量位来对音频信号进行编码或解码时,高频信号的声音质量也不会恶化,从而可以使编码效率最大化。

    ERROR CONCEALMENT METHOD AND APPARATUS FOR AUDIO SIGNAL AND DECODING METHOD AND APPARATUS FOR AUDIO SIGNAL USING THE SAME
    4.
    发明申请
    ERROR CONCEALMENT METHOD AND APPARATUS FOR AUDIO SIGNAL AND DECODING METHOD AND APPARATUS FOR AUDIO SIGNAL USING THE SAME 有权
    用于音频信号和解码方法的错误接收方法和装置以及使用该信号的音频信号的装置

    公开(公告)号:US20080126096A1

    公开(公告)日:2008-05-29

    申请号:US11930752

    申请日:2007-10-31

    IPC分类号: G10L19/00

    摘要: An error concealment method and apparatus for an audio signal and a decoding method and apparatus for an audio signal using the error concealment method and apparatus. The error concealment method includes selecting one of an error concealment in a frequency domain and an error concealment in a time domain as an error concealment scheme for a current frame based on a predetermined criteria when an error occurs in the current frame, selecting one of a repetition scheme and an interpolation scheme in the frequency domain as the error concealment scheme for the current frame based on a predetermined criteria when the error concealment in the frequency domain is selected, and concealing the error of the current frame using the selected scheme.

    摘要翻译: 一种用于音频信号的错误隐藏方法和装置,以及使用错误隐藏方法和装置的用于音频信号的解码方法和装置。 错误隐藏方法包括:当在当前帧中发生错误时,基于预定标准,选择频域中的错误隐藏和时域中的错误隐藏中的一个作为当前帧的错误隐藏方案,选择 重复方案和在频域中的内插方案作为当前帧的错误隐藏方案,当选择频域中的错误隐藏时,基于预定标准,并且使用所选择的方案来隐藏当前帧的错误。

    Error concealment method and apparatus for audio signal and decoding method and apparatus for audio signal using the same
    5.
    发明授权
    Error concealment method and apparatus for audio signal and decoding method and apparatus for audio signal using the same 有权
    用于音频信号的错误隐藏方法和装置以及使用其的音频信号的解码方法和装置

    公开(公告)号:US08676569B2

    公开(公告)日:2014-03-18

    申请号:US13544203

    申请日:2012-07-09

    IPC分类号: G10L19/00

    摘要: An error concealment method and apparatus for an audio signal and a decoding method and apparatus for an audio signal using the error concealment method and apparatus. The error concealment method includes selecting one of an error concealment in a frequency domain and an error concealment in a time domain as an error concealment scheme for a current frame based on a predetermined criteria when an error occurs in the current frame, selecting one of a repetition scheme and an interpolation scheme in the frequency domain as the error concealment scheme for the current frame based on a predetermined criteria when the error concealment in the frequency domain is selected, and concealing the error of the current frame using the selected scheme.

    摘要翻译: 一种用于音频信号的错误隐藏方法和装置,以及使用错误隐藏方法和装置的用于音频信号的解码方法和装置。 错误隐藏方法包括:当在当前帧中发生错误时,基于预定标准,选择频域中的错误隐藏和时域中的错误隐藏中的一个作为当前帧的错误隐藏方案,选择 重复方案和在频域中的内插方案作为当前帧的错误隐藏方案,当选择频域中的错误隐藏时,基于预定标准,并且使用所选择的方案来隐藏当前帧的错误。

    METHOD AND APPARATUS TO DETERMINE ENCODING MODE OF AUDIO SIGNAL AND METHOD AND APPARATUS TO ENCODE AND/OR DECODE AUDIO SIGNAL USING THE ENCODING MODE DETERMINATION METHOD AND APPARATUS
    6.
    发明申请
    METHOD AND APPARATUS TO DETERMINE ENCODING MODE OF AUDIO SIGNAL AND METHOD AND APPARATUS TO ENCODE AND/OR DECODE AUDIO SIGNAL USING THE ENCODING MODE DETERMINATION METHOD AND APPARATUS 审中-公开
    用于确定音频信号编码模式的方法和装置以及使用编码模式确定方法和装置来编码和/或解码音频信号的方法和装置

    公开(公告)号:US20080147414A1

    公开(公告)日:2008-06-19

    申请号:US11939074

    申请日:2007-11-13

    IPC分类号: G10L19/06

    CPC分类号: G10L19/20 G10L25/78

    摘要: A method and apparatus to determine an encoding mode of an audio signal, and a method and apparatus to encode an audio signal according to the encoding mode. In the encoding mode determination method, a mode determination threshold for the current frame that is subject to encoding mode determination is adaptively adjusted according to a long-term feature of the audio signal for a frame (the current frame) that is subject to encoding mode determination, thereby improving the hit rate of encoding mode determination and signal classification, suppressing frequent oscillation of an encoding mode in frame units, improving noise tolerance, and improving smoothness of a reconstructed audio signal.

    摘要翻译: 一种确定音频信号的编码模式的方法和装置,以及根据编码模式对音频信号进行编码的方法和装置。 在编码模式确定方法中,根据用于编码模式的帧(当前帧)的音频信号的长期特征,自适应地调整用于进行编码模式确定的当前帧的模式确定阈值 确定,从而提高编码模式确定和信号分类的命中率,以帧为单位抑制编码模式的频繁振荡,提高噪声容限并提高重构音频信号的平滑度。

    METHOD AND APPARATUS TO ENCODE AND/OR DECODE BY APPLYING ADAPTIVE WINDOW SIZE
    7.
    发明申请
    METHOD AND APPARATUS TO ENCODE AND/OR DECODE BY APPLYING ADAPTIVE WINDOW SIZE 审中-公开
    通过应用自适应窗口大小来编码和/或解码的方法和装置

    公开(公告)号:US20080140428A1

    公开(公告)日:2008-06-12

    申请号:US11949925

    申请日:2007-12-04

    IPC分类号: G10L19/00 G10L19/02

    CPC分类号: G10L19/022

    摘要: An apparatus to process an audio signal includes an encoder to determine a variable window size of sub bands of a frame of an audio signal, to transform the sub bands according to the variable window size from a first domain to a second domain, to quantize the transformed sub bands, and to multiplex the quantized sub bands and information on the variable window size corresponding the respective sub bands.

    摘要翻译: 一种用于处理音频信号的装置包括:编码器,用于确定音频信号的帧的子频带的可变窗口大小,以便根据可变窗口尺寸从第一域到第二域变换子带,以量化 并且对量化的子带和关于对应于各个子带的可变窗口大小的信息进行多路复用。

    Method and apparatus for adaptively encoding and decoding high frequency band
    9.
    发明授权
    Method and apparatus for adaptively encoding and decoding high frequency band 有权
    用于自适应编码和解码高频带的方法和装置

    公开(公告)号:US08340962B2

    公开(公告)日:2012-12-25

    申请号:US13220193

    申请日:2011-08-29

    IPC分类号: G10L19/12

    CPC分类号: G10L21/038

    摘要: Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized.

    摘要翻译: 提供了一种用于对音频信号进行编码和解码的方法和装置。 根据本申请,通过使用低于预设频带的低频信号,在时域或频域中自适应地编码或解码高于预置频带的高频带的信号。 因此,即使当通过使用少量位来对音频信号进行编码或解码时,高频信号的声音质量也不会恶化,从而可以使编码效率最大化。

    Error concealment method and apparatus for audio signal and decoding method and apparatus for audio signal using the same
    10.
    发明授权
    Error concealment method and apparatus for audio signal and decoding method and apparatus for audio signal using the same 有权
    用于音频信号的错误隐藏方法和装置以及使用其的音频信号的解码方法和装置

    公开(公告)号:US08219393B2

    公开(公告)日:2012-07-10

    申请号:US11930752

    申请日:2007-10-31

    IPC分类号: G10L21/00

    摘要: An error concealment method and apparatus for an audio signal and a decoding method and apparatus for an audio signal using the error concealment method and apparatus. The error concealment method includes selecting one of an error concealment in a frequency domain and an error concealment in a time domain as an error concealment scheme for a current frame based on a predetermined criteria when an error occurs in the current frame, selecting one of a repetition scheme and an interpolation scheme in the frequency domain as the error concealment scheme for the current frame based on a predetermined criteria when the error concealment in the frequency domain is selected, and concealing the error of the current frame using the selected scheme.

    摘要翻译: 一种用于音频信号的错误隐藏方法和装置,以及使用错误隐藏方法和装置的用于音频信号的解码方法和装置。 错误隐藏方法包括:当在当前帧中发生错误时,基于预定标准,选择频域中的错误隐藏和时域中的错误隐藏中的一个作为当前帧的错误隐藏方案,选择 重复方案和在频域中的内插方案作为当前帧的错误隐藏方案,当选择频域中的错误隐藏时,基于预定标准,并且使用所选择的方案来隐藏当前帧的错误。