METHOD AND APPARATUS TO ENCODE AND DECODE AN AUDIO SIGNAL
    1.
    发明申请
    METHOD AND APPARATUS TO ENCODE AND DECODE AN AUDIO SIGNAL 审中-公开
    编码和解码音频信号的方法和设备

    公开(公告)号:US20080281604A1

    公开(公告)日:2008-11-13

    申请号:US11956690

    申请日:2007-12-14

    IPC分类号: G10L19/00

    摘要: A method and apparatus to encode and decode an audio signal. In the encoding method and apparatus, one or more important frequency components may be detected from an audio signal, the frequency components may be encoded, and then an envelope of the audio signal may be encoded. In the decoding method and apparatus, an audio signal may be decoded by adjusting envelopes at one or more bands containing one or more important frequency components in consideration of the energy values of the frequency components. Accordingly, it is possible to maximize the coding efficiency without degrading the sound quality of the audio signal even if the audio signal is encoded or decoded using a small amount of bits.

    摘要翻译: 一种对音频信号进行编码和解码的方法和装置。 在编码方法和装置中,可以从音频信号检测一个或多个重要的频率分量,可以对频率分量进行编码,然后对音频信号的包络进行编码。 在解码方法和装置中,考虑到频率分量的能量值,可以通过调整包含一个或多个重要频率分量的一个或多个频带的信封来解码音频信号。 因此,即使音频信号使用少量的比特进行编码或解码,也可以使编码效率最大化而不降低音频信号的声音质量。

    Method and apparatus for adaptively encoding and decoding high frequency band
    4.
    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
    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: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。

    Method and apparatus for adaptively encoding and decoding high frequency band
    6.
    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:US08010352B2

    公开(公告)日:2011-08-30

    申请号:US11766331

    申请日:2007-06-21

    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。

    METHOD AND APPARATUS TO ENCODE AND/OR DECODE AUDIO AND/OR SPEECH SIGNAL
    8.
    发明申请
    METHOD AND APPARATUS TO ENCODE AND/OR DECODE AUDIO AND/OR SPEECH SIGNAL 审中-公开
    编码和/或解码音频和/或语音信号的方法和装置

    公开(公告)号:US20080120095A1

    公开(公告)日:2008-05-22

    申请号:US11941249

    申请日:2007-11-16

    IPC分类号: G10L19/00

    摘要: A method and apparatus to encode and/or decode a speech signal and/or an audio signal. The apparatus includes a first domain transforming unit, a frequency domain encoding unit, and a multiplexing unit to encode the speech signal and/or an audio signal. The apparatus includes a demultiplexing unit, a frequency domain decoding unit, and a second domain inverse transformation unit to decode the speech signal and/or the audio signal. The method and apparatus are capable of effectively encoding or decoding all of a speech signal, an audio signal, and a mixed signal of a speech signal and an audio signal, and improving the quality of sound by using a small number of bits.

    摘要翻译: 一种用于对语音信号和/或音频信号进行编码和/或解码的方法和装置。 该装置包括第一域变换单元,频域编码单元和用于对语音信号和/或音频信号进行编码的复用单元。 该装置包括解复用单元,频域解码单元和用于解码语音信号和/或音频信号的第二域逆变换单元。 该方法和装置能够有效地编码或解码语音信号,音频信号和语音信号和音频信号的混合信号,并且通过使用少量的比特来提高声音的质量。

    METHOD AND APPARATUS TO CONCEAL ERROR IN DECODED AUDIO SIGNAL
    9.
    发明申请
    METHOD AND APPARATUS TO CONCEAL ERROR IN DECODED AUDIO SIGNAL 有权
    解码音频信号中的隐含错误的方法和装置

    公开(公告)号:US20070271480A1

    公开(公告)日:2007-11-22

    申请号:US11749249

    申请日:2007-05-16

    IPC分类号: G06F11/00

    CPC分类号: G10L19/005

    摘要: A method and apparatus to decode audio data constructed with a plurality of layers. An error concealment method of process a decoded bitstream selects one of a frequency domain and a time domain in order to conceal the errors, detects a position where the errors exist in a frame when the error concealment method in the frequency domain is selected, and conceals the errors only in a segment after the detected position.

    摘要翻译: 一种解码由多层构成的音频数据的方法和装置。 处理解码比特流的错误隐藏方法选择频域和时域中的一个以隐藏错误,当选择频域中的错误隐藏方法时,检测在帧中存在错误的位置,并且隐藏 检测到位置之后的错误。

    Method, medium, and system encoding/decoding multi-channel signal
    10.
    发明授权
    Method, medium, and system encoding/decoding multi-channel signal 有权
    方法,中,系统编码/解码多通道信号

    公开(公告)号:US08861738B2

    公开(公告)日:2014-10-14

    申请号:US13563808

    申请日:2012-08-01

    摘要: A multi-channel signal decoding method is provided. A down-mixed signal representative of a multi-channel signal is decoded, and parameters representing characteristic relations between channels of the multi-channel signal are decoded. An additional parameter is estimated by using the decoded parameters, and the decoded down-mixed signal is up-mixed by using the decoded parameters and the estimated parameter so as to decode the multi-channel signal.

    摘要翻译: 提供了一种多通道信号解码方法。 解码表示多声道信号的下混信号,并对表示多声道信号的声道之间的特征关系的参数进行解码。 通过使用解码参数来估计附加参数,并且通过使用解码参数和估计参数对解码的下混合信号进行混合,以解码多声道信号。