Method and apparatus for adaptively encoding and decoding high frequency band
    11.
    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
    13.
    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
    14.
    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
    15.
    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。

    Error concealment method and apparatus for audio signal and decoding method and apparatus for audio signal using the same
    17.
    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, MEDIUM AND APPARATUS FOR ENCODING AND/OR DECODING SIGNAL
    19.
    发明申请
    METHOD, MEDIUM AND APPARATUS FOR ENCODING AND/OR DECODING SIGNAL 审中-公开
    用于编码和/或解码信号的方法,介质和装置

    公开(公告)号:US20090006081A1

    公开(公告)日:2009-01-01

    申请号:US12033342

    申请日:2008-02-19

    IPC分类号: G10L19/00

    摘要: Provided are a method and apparatus for encoding or decoding an audio signal or a speech signal. In the encoding method, encoding is performed by performing domain transformation on a received signal in units of frequency bands by applying a psychoacoustic model, encoding the transformation result with respect to predetermined one or more frequency bands by using a high temporal resolution coding tool, and then quantizing the encoding result. In the decoding method, decoding is performed by inversely quantizing signals obtained by encoding in units of frequency bands, decoding one or more signals from among the inversely quantized signals, which are allocated to one or more frequency bands which have a predetermined domain resolution, determined by applying the psychoacoustic model, that is greater than a predetermined value, according to a predetermined method, and then inversely transforming either the inversely quantized or the one or more decoded signals.

    摘要翻译: 提供了一种用于对音频信号或语音信号进行编码或解码的方法和装置。 在编码方法中,通过使用心理声学模型,通过使用高时间分辨率编码工具对相对于预定的一个或多个频带进行变换结果的编码,对以频带为单位的接收信号进行域变换来进行编码,以及 然后量化编码结果。 在解码方法中,通过对由频带单位进行编码而得到的信号进行逆量化,对从量化后的信号中分离的一个以上的信号进行解码,分解成具有规定的域分辨率的一个以上的频带, 通过应用根据预定方法大于预定值的心理声学模型,然后逆向变换反量化或一个或多个解码信号。

    METHOD AND APPARATUS FOR ENCODING AND DECODING AUDIO/SPEECH SIGNAL
    20.
    发明申请
    METHOD AND APPARATUS FOR ENCODING AND DECODING AUDIO/SPEECH SIGNAL 有权
    编码和解码音频/语音信号的方法和装置

    公开(公告)号:US20080270124A1

    公开(公告)日:2008-10-30

    申请号:US11872116

    申请日:2007-10-15

    IPC分类号: G10L21/00

    CPC分类号: G10L19/00 G10L19/025

    摘要: Provided is a method of encoding an audio/speech signal, the method including determining a variable length of a frame, that is, a processing unit of an input signal in accordance with a position of an attack in the input signal; transforming each frame of the input signal to a frequency domain and dividing the frame into a plurality of sub frequency bands; and, if a signal of a sub frequency band is determined to be encoded in the frequency domain, encoding the signal of the sub frequency band in the frequency domain, and if the signal of the sub frequency band is determined to be encoded in a time domain, inverse transforming the signal of the sub frequency band to the time domain and encoding the inverse transformed signal in the time domain. According to the present invention, the audio/speech signal may be efficiently encoded by controlling time resolution and frequency resolution.

    摘要翻译: 提供了一种对音频/语音信号进行编码的方法,该方法包括根据输入信号中的攻击位置来确定帧的可变长度,即输入信号的处理单元; 将所述输入信号的每个帧变换为频域并将所述帧划分为多个子频带; 并且如果确定在频域中编码子频带的信号,则对频域中的子频带的信号进行编码,并且如果确定子频带的信号被编码在一个时间 域,将子频带的信号逆变换到时域,并对时域中的逆变换信号进行编码。 根据本发明,可以通过控制时间分辨率和频率分辨率来有效地编码音频/语音信号。