Methods and apparatuses for encoding and decoding object-based audio signals
    113.
    发明授权
    Methods and apparatuses for encoding and decoding object-based audio signals 有权
    用于对基于对象的音频信号进行编码和解码的方法和装置

    公开(公告)号:US08756066B2

    公开(公告)日:2014-06-17

    申请号:US12438938

    申请日:2008-02-14

    IPC分类号: G10L19/00 H04R5/00

    摘要: An audio decoding method and apparatus and an audio encoding method and apparatus which can efficiently process object-based audio signals are provided. The audio decoding method includes receiving a downmix signal and object-based side information, the downmix signal comprising at least two downmix channel signals; extracting gain information from the object-based side information and generating modification information for modifying the downmix channel signals on a channel-by-channel basis based on the gain information; and modifying the downmix channel signals by applying the modification information to the downmix channel signals.

    摘要翻译: 提供了可以有效地处理基于对象的音频信号的音频解码方法和装置以及音频编码方法和装置。 音频解码方法包括:接收下混合信号和基于对象的侧信息,所述降混信号包括至少两个下混通道信号; 从所述基于对象的侧信息提取增益信息,并且基于所述增益信息生成用于修改所述下混频道信号的修改信息; 以及通过将所述修改信息应用于所述下混通道信号来修改所述下混通道信号。

    Apparatus for processing media signal and method thereof
    114.
    发明授权
    Apparatus for processing media signal and method thereof 有权
    用于处理媒体信号的装置及其方法

    公开(公告)号:US08626515B2

    公开(公告)日:2014-01-07

    申请号:US12295451

    申请日:2007-03-30

    IPC分类号: G10L19/00

    摘要: The present invention relates to an apparatus for processing a media signal and method thereof. A method of processing a media signal according to the present invention includes extracting a downmix signal from a bitstream, extracting at least one of first spatial information and second spatial information from the bitstream, and generating multi-channels using the extracted spatial information and the downmix signal. And, the present invention provides a decoding method and apparatus for generating various kinds of multi-channels.

    摘要翻译: 本发明涉及一种处理媒体信号的装置及其方法。 根据本发明的处理媒体信号的方法包括从比特流提取下混合信号,从比特流中提取第一空间信息和第二空间信息中的至少一个,并且使用所提取的空间信息和下混合来生成多声道 信号。 并且,本发明提供一种用于生成各种多声道的解码方法和装置。

    Apparatus and method for encoding/decoding signal
    115.
    发明授权
    Apparatus and method for encoding/decoding signal 有权
    信号编码/解码的装置和方法

    公开(公告)号:US08625810B2

    公开(公告)日:2014-01-07

    申请号:US12278568

    申请日:2007-02-07

    IPC分类号: H04R5/00

    摘要: An encoding method and apparatus and a decoding method and apparatus are provided. The decoding method includes extracting a down-mix signal and spatial information regarding a plurality of channels from an input bitstream, and generating a three-dimensional (3D) down-mix signal by performing a 3D rendering operation on the down-mix signal using the spatial information and a filter, wherein the sum of the number of valid signals of the down-mix signal, the number of valid signals of the spatial information, and the number of valid signals of co-efficients of the filter is less than the number of valid signals of the 3D down-mix signal. Accordingly, it is possible to efficiently encode multi-channel signals with 3D effects and to adaptively restore and reproduce audio signals with optimum sound quality according to the characteristics of an audio reproduction environment.

    摘要翻译: 提供了编码方法和装置以及解码方法和装置。 解码方法包括从输入比特流中提取关于多个信道的下混合信号和空间信息,并且通过使用下混合信号对缩小混合信号执行3D渲染操作来生成三维(3D)降混信号 空间信息和滤波器,其中下混合信号的有效信号数量,空间信息的有效信号的数量和滤波器的有效信号的数量之和小于数字 的3D下混合信号的有效信号。 因此,可以有效地编码具有3D效果的多声道信号,并根据音频再现环境的特性自适应地恢复和再现具有最佳声音质量的音频信号。

    Apparatus for encoding and decoding audio signal and method thereof
    116.
    发明授权
    Apparatus for encoding and decoding audio signal and method thereof 有权
    用于对音频信号进行编码和解码的装置及其方法

    公开(公告)号:US08494667B2

    公开(公告)日:2013-07-23

    申请号:US11994315

    申请日:2006-06-30

    IPC分类号: G06F17/00

    CPC分类号: G10L19/008

    摘要: A method and/or apparatus for encoding and/or decoding an audio signal is disclosed, in which a downmix gain is applied to a downmix signal in an encoding apparatus which, in turn, transmits, to a decoding apparatus, a bit stream containing information as to the applied downmix gain. The decoding apparatus recovers the downmix signal, using the downmix gain information. A method and/or apparatus for encoding and/or decoding an audio signal is also disclosed, in which the encoding apparatus can apply an arbitrary downmix gain (ADG) to the downmix signal, and can transmit a bit stream containing information as to the applied ADG to the decoding apparatus. The decoding apparatus recovers the downmix signal, using the ADG information. A method and/or apparatus for encoding and/or decoding an audio signal is also disclosed, in which the method and/or apparatus can also vary the energy level of a specific channel, and can recover the varied energy level.

    摘要翻译: 公开了一种用于对音频信号进行编码和/或解码的方法和/或装置,其中降混增益被应用于编码装置中的下混合信号,该编码装置又将解码装置传送到包含信息的比特流 关于应用的下混增益。 解码装置使用下混增益信息来恢复下混信号。 还公开了一种用于对音频信号进行编码和/或解码的方法和/或装置,其中编码装置可以对下混合信号应用任意的下混增益(ADG),并且可以发送包含关于应用的信息的比特流 ADG到解码装置。 解码装置使用ADG信息恢复下混信号。 还公开了一种用于对音频信号进行编码和/或解码的方法和/或装置,其中所述方法和/或装置还可以改变特定信道的能级,并且可以恢复变化的能级。

    Methods and apparatuses for encoding and decoding object-based audio signals
    117.
    发明授权
    Methods and apparatuses for encoding and decoding object-based audio signals 有权
    用于对基于对象的音频信号进行编码和解码的方法和装置

    公开(公告)号:US08417531B2

    公开(公告)日:2013-04-09

    申请号:US13026190

    申请日:2011-02-11

    摘要: An audio decoding method and apparatus and an audio encoding method and apparatus which can efficiently process object-based audio signals are provided. The audio decoding method includes receiving a downmix signal and object-based side information, the downmix signal comprising at least two downmix channel signals; extracting gain information from the object-based side information and generating modification information for modifying the downmix channel signals on a channel-by-channel basis based on the gain information; and modifying the downmix channel signals by applying the modification information to the downmix channel signals.

    摘要翻译: 提供了可以有效地处理基于对象的音频信号的音频解码方法和装置以及音频编码方法和装置。 音频解码方法包括:接收下混合信号和基于对象的侧信息,所述降混信号包括至少两个下混通道信号; 从所述基于对象的侧信息提取增益信息,并且基于所述增益信息生成用于修改所述下混频道信号的修改信息; 以及通过将所述修改信息应用于所述下混通道信号来修改所述下混通道信号。

    Method and apparatus for processing a media signal
    118.
    发明授权
    Method and apparatus for processing a media signal 有权
    用于处理媒体信号的方法和装置

    公开(公告)号:US08411869B2

    公开(公告)日:2013-04-02

    申请号:US12161558

    申请日:2007-01-19

    IPC分类号: G10L19/00

    摘要: An apparatus for processing a media signal and method thereof are disclosed, by which the media signal can be converted to a surround signal by using spatial information of the media signal. The present invention provides a method of processing a signal, the method comprising of generating rendering information by using spatial information indicating features between multi-sources and filter information having a surround effect; and generating a surround signal by applying the rendering information to a downmix signal generated by downmixing the multi-sources, wherein a tab number of a filter used in applying the rendering information to generate the surround signal is variable.

    摘要翻译: 公开了一种用于处理媒体信号的装置及其方法,利用该装置可以通过使用媒体信号的空间信息将媒体信号转换为环绕信号。 本发明提供一种处理信号的方法,所述方法包括:通过使用指示多源之间的特征的空间信息和具有环绕效果的滤波器信息来生成渲染信息; 以及通过将所述再现信息应用于通过将所述多个源进行混合而产生的降混信号来产生环绕信号,其中用于应用所述渲染信息以生成所述环绕信号的滤波器的标签号是可变的。

    Method and apparatus for processing a media signal
    119.
    发明授权
    Method and apparatus for processing a media signal 有权
    用于处理媒体信号的方法和装置

    公开(公告)号:US08351611B2

    公开(公告)日:2013-01-08

    申请号:US12161337

    申请日:2007-01-19

    IPC分类号: H04R5/00

    摘要: An apparatus for processing a media signal and method thereof are disclosed, by which the media signal can be converted to a surround signal by using spatial information of the media signal. The present invention provides a method of processing a signal, the method comprising of extracting a downmix signal from a bitstream; generating a decorrelated downmix signal by applying a decorrelator to the downmix signal; and generating a surround signal by applying rendering information for generating a surround signal to the downmix signal and the decorrelated downmix signal.

    摘要翻译: 公开了一种用于处理媒体信号的装置及其方法,利用该装置可以通过使用媒体信号的空间信息将媒体信号转换成环绕信号。 本发明提供一种处理信号的方法,所述方法包括从比特流中提取下混合信号; 通过将去相关器应用于所述降混信号来产生去相关的下混合信号; 以及通过将用于产生环绕信号的渲染信息应用于降混信号和解相关的下混信号来产生环绕信号。

    Method and an apparatus for processing a signal
    120.
    发明授权
    Method and an apparatus for processing a signal 有权
    用于处理信号的方法和装置

    公开(公告)号:US08346380B2

    公开(公告)日:2013-01-01

    申请号:US12567580

    申请日:2009-09-25

    IPC分类号: G06F17/00

    CPC分类号: G10L19/008

    摘要: A method of processing a signal is disclosed. The present invention includes receiving (a) downmix signal being generated from plural-channel signal and (b) spatial information indicating attribute of the plural-channel signal in order to upmix the downmix signal and including phase shift flag indicating whether phase of a frame of at least one channel of the plural-channel signal is shifted; obtaining inter-channel phase difference (IPD) coding flag indicating whether IPD value is used to the spatial information from a header of the spatial information; obtaining IPD mode flag indicating whether the IPD value is used to frame of the spatial information from the frame based on the IPD coding flag; obtaining the IPD value of parameter band in the frame, based on the IPD mode flag; upmixing plural-channel signal by applying the IPD value to the downmix signal; and shifting the phase of the frame of the at least one channel of the plural-channel signal based on the phase shift flag.

    摘要翻译: 公开了处理信号的方法。 本发明包括接收(a)从多声道信号产生的降混信号,以及(b)指示多声道信号的属性的空间信息,以便混合下混信号,并包括指示帧的相位是否相位的相移标志 多信道信号的至少一个信道被移位; 从空间信息的头部获取指示是否将IPD值用于空间信息的信道间相位差(IPD)编码标志; 基于IPD编码标志,获得指示IPD值是否用于来自该帧的空间信息的帧的IPD模式标志; 基于IPD模式标志获取帧中参数带的IPD值; 通过将IPD值应用于缩混信号来上混合多声道信号; 并且基于相移标志来移位多信道信号的至少一个信道的帧的相位。