Scalable encoding and/or decoding method and apparatus
    5.
    发明授权
    Scalable encoding and/or decoding method and apparatus 有权
    可扩展编码和/或解码方法和装置

    公开(公告)号:US07750829B2

    公开(公告)日:2010-07-06

    申请号:US12061028

    申请日:2008-04-02

    IPC分类号: H03M7/40

    摘要: A method and apparatus to scalably encode or decode an audio signal or a video signal. A signal distribution is considered after binarization is performed based on a tree structure. Thus, a decoding end can minimize generation of quantization errors and restore an original signal. In addition, only frequency components perceptually important in terms of human hearing are set to an upper layer and encoded without decreasing a bandwidth which is restored from an upper layer. Therefore, sound quality can be increased by decreasing quantization noise while maintaining a relatively large frequency bandwidth, and the degradation of a compression performance is prevented.

    摘要翻译: 一种用于可缩放地编码或解码音频信号或视频信号的方法和装置。 在基于树结构执行二值化之后考虑信号分布。 因此,解码端可以最小化量化误差的产生并恢复原始信号。 此外,只有在人听觉上感知重要的频率分量被设置为上层,并且在不减少从上层恢复的带宽的情况下进行编码。 因此,通过降低量化噪声同时维持相对较大的频率带宽可以提高声音质量,并且防止压缩性能的劣化。

    AUDIO SIGNAL ENCODING/DECODING METHOD AND APPARATUS
    6.
    发明申请
    AUDIO SIGNAL ENCODING/DECODING METHOD AND APPARATUS 失效
    音频信号编码/解码方法和装置

    公开(公告)号:US20080312912A1

    公开(公告)日:2008-12-18

    申请号:US11867218

    申请日:2007-10-04

    IPC分类号: G10L19/02

    摘要: Provided is an audio signal encoding method including transforming an input signal from a time domain to a time/frequency domain using a first transformation method, extracting a stereo parameter from a signal of the time/frequency domain, encoding the stereo parameter, and down-mixing the signal of the time/frequency domain, transforming each of sub-bands of the down-mixed signal to a frequency domain by using a second transformation method, and encoding the signal of the frequency domain in the frequency domain.

    摘要翻译: 提供了一种音频信号编码方法,包括使用第一变换方法将输入信号从时域变换为时域/频域,从时域/频域的信号中提取立体声参数,对立体声参数进行编码, 混合时间/频域的信号,通过使用第二变换方法将下混合信号的每个子频带变换为频域,并对频域中的频域的信号进行编码。

    Audio signal encoding/decoding method and apparatus
    7.
    发明授权
    Audio signal encoding/decoding method and apparatus 失效
    音频信号编码/解码方法和装置

    公开(公告)号:US08032362B2

    公开(公告)日:2011-10-04

    申请号:US11867218

    申请日:2007-10-04

    IPC分类号: G10L19/00

    摘要: Provided is an audio signal encoding method including transforming an input signal from a time domain to a time/frequency domain using a first transformation method, extracting a stereo parameter from a signal of the time/frequency domain, encoding the stereo parameter, and down-mixing the signal of the time/frequency domain, transforming each of sub-bands of the down-mixed signal to a frequency domain by using a second transformation method, and encoding the signal of the frequency domain in the frequency domain.

    摘要翻译: 提供了一种音频信号编码方法,包括使用第一变换方法将输入信号从时域变换为时域/频域,从时域/频域的信号中提取立体声参数,对立体声参数进行编码, 混合时间/频域的信号,通过使用第二变换方法将下混合信号的每个子频带变换为频域,并对频域中的频域的信号进行编码。

    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。