Apparatus to generate multi-channel audio signals and method thereof
    11.
    发明授权
    Apparatus to generate multi-channel audio signals and method thereof 有权
    用于产生多声道音频信号的装置及其方法

    公开(公告)号:US07986796B2

    公开(公告)日:2011-07-26

    申请号:US11522945

    申请日:2006-09-19

    IPC分类号: H03G5/00

    摘要: An apparatus and method of generating multi-channel audio signals includes a voice signal removal unit to generate a first signal by removing one or more components of a plurality of frequency bands corresponding to a voice frequency range from an input signal, a voice signal amplification unit to generate a second signal by calculating a sum of channel signals of the input signal and amplifying one or more components of the plurality of the frequency bands corresponding to the voice frequency range of the sum signal, a control filter to generate a third signal by compensating for a level of the first signal, and a multi-channel audio generation unit to generate a center-channel audio signal and a front-channel audio signal using the second, third, and fourth signals.

    摘要翻译: 一种产生多声道音频信号的装置和方法包括:语音信号去除单元,用于通过从输入信号中去除对应于语音频率范围的多个频带中的一个或多个分量来产生第一信号,语音信号放大单元 通过计算输入信号的信道信号之和并且对与和信号的语音频率范围相对应的多个频带中的一个或多个分量进行放大来产生第二信号;控制滤波器,用于通过补偿来产生第三信号 对于第一信号的电平,以及多声道音频产生单元,用于使用第二,第三和第四信号来产生中心声道音频信号和前置声道音频信号。

    METHOD AND APPARATUS FOR FREQUENCY ENCODING, AND METHOD AND APPARATUS FOR FREQUENCY DECODING
    12.
    发明申请
    METHOD AND APPARATUS FOR FREQUENCY ENCODING, AND METHOD AND APPARATUS FOR FREQUENCY DECODING 有权
    用于频率编码的方法和装置,以及用于频率解码的方法和装置

    公开(公告)号:US20090198489A1

    公开(公告)日:2009-08-06

    申请号:US12363937

    申请日:2009-02-02

    IPC分类号: G10L19/00

    CPC分类号: G10L19/093

    摘要: Provided are a method and apparatus for encoding the frequency of a continuation sinusoidal signal and a method and apparatus for decoding the same. In the encoding method, a continuation sinusoidal signal successive to a sinusoidal signal in a previous section is extracted from a current section; a frequency of the continuation sinusoidal signal at the boundary between the current and previous sections is changed to a first frequency, based on representative frequencies of the continuation sinusoidal signal and at least one sinusoidal signal that belongs to a section adjacent to the current section and is successive to the continuation sinusoidal signal; and the first frequency is encoded.

    摘要翻译: 提供一种用于对连续正弦信号的频率进行编码的方法和装置,以及用于对其进行解码的方法和装置。 在编码方法中,从当前部分提取与前一部分中的正弦信号连续的连续正弦信号; 基于连续正弦信号的代表频率和属于与当前部分相邻的部分的至少一个正弦信号,在当前部分和前一部分之间的边界处的连续正弦信号的频率被改变为第一频率,并且是 连续的正弦信号; 并且第一频率被编码。

    Method and apparatus to provide active audio matrix decoding based on the positions of speakers and a listener
    14.
    发明申请
    Method and apparatus to provide active audio matrix decoding based on the positions of speakers and a listener 有权
    基于扬声器和收听者的位置提供主动音频矩阵解码的方法和装置

    公开(公告)号:US20070140498A1

    公开(公告)日:2007-06-21

    申请号:US11641080

    申请日:2006-12-19

    IPC分类号: H04R5/00

    CPC分类号: H04S5/005

    摘要: An active audio matrix decoding method and apparatus to generate multi-channel audio signals from a stereo channel audio signal. The method includes extracting characteristics of a plurality of speaker signals and angles of each of a plurality of multi-channel speakers from arbitrary signals reproduced by the multi-channel speakers, decoding a stereo signal into a plurality of multi-channel signals and correcting the decoded multi-channel signals based on the extracted characteristics of each of the plurality of speaker signals, extracting a power vector of each of the decoded multi-channel signals by multiplying a magnitude of each of the decoded multi-channel signals by an angle of each multi-channel speaker and extracting a vector of a virtual sound source existing between a plurality of channels based on the power vector of each of the decoded multi-channel signals, extracting a vector value of a dominant sound image by linearly combining the extracted vectors of the virtual sound sources and normalizing a position of each multi-channel speaker with respect to the vector value of the dominant sound image to obtain a normalized position value, and distributing a gain value to the position of each multi-channel speaker by comparing a magnitude of a combined decoded multi-channel signal with the magnitude of each of the decoded multi-channel signals.

    摘要翻译: 一种从立体声声道音频信号产生多声道音频信号的有源音频矩阵解码方法和装置。 该方法包括从由多声道扬声器再现的任意信号中提取多个扬声器信号的特性和多个多声道扬声器中的每一个的角度,将立体声信号解码为多个多声道信号并校正解码的 基于所提取的多个扬声器信号中的每一个的特征的多声道信号,通过将每个解码的多声道信号的幅度乘以每个多声道信号的角度来提取每个解码的多声道信号的功率矢量 基于每个解码的多声道信号的功率矢量提取存在于多个声道之间的虚拟声源的矢量,通过线性地组合所提取的矢量的提取的矢量,提取主声音图像的向量值, 虚拟声源和相对于主要声音图像的矢量值对每个多声道扬声器的位置进行归一化 通过将组合解码的多通道信号的大小与解码的多通道信号中的每一个的大小进行比较,获得归一化位置值,并将增益值分配给每个多声道扬声器的位置。

    Method and apparatus for encoding residual signals and method and apparatus for decoding residual signals
    16.
    发明授权
    Method and apparatus for encoding residual signals and method and apparatus for decoding residual signals 有权
    用于编码残留信号的方法和装置以及用于解码残余信号的方法和装置

    公开(公告)号:US08843380B2

    公开(公告)日:2014-09-23

    申请号:US12174936

    申请日:2008-07-17

    CPC分类号: G10L19/08 G10L19/025

    摘要: Encoding and decoding of residual signals are provided. In a method of encoding a residual signal of an audio signal, the residual signal is divided into a plurality of sections having different sizes, based on a change of the residual signal. Then, section division information representing information about the divided sections and section-by-section residual signal information representing characteristics of the sections of the residual signal are acquired. Thereafter, the residual signal is encoded based on the section division information and the section-by-section residual signal information.

    摘要翻译: 提供残留信号的编码和解码。 在对音频信号的残差信号进行编码的方法中,残差信号根据残差信号的变化被划分为具有不同大小的多个部分。 然后,获取表示关于分割部分的信息的部分分割信息和表示残留信号的各部分的特征的逐段残差信号信息。 此后,基于区段分割信息和逐段残差信号对剩余信号进行编码。

    Decoding method and decoding apparatus therefor
    17.
    发明授权
    Decoding method and decoding apparatus therefor 有权
    解码方法及其解码装置

    公开(公告)号:US08762158B2

    公开(公告)日:2014-06-24

    申请号:US13198763

    申请日:2011-08-05

    CPC分类号: G10L19/0204

    摘要: A method and apparatus for generating synthesis audio signals are provided. The method includes decoding a bitstream; splitting the decoded bitstream into n sub-band signals; generating n transformed sub-band signals by transforming the n sub-band signals in a frequency domain; and generating synthesis audio signals by respectively multiplying the n transformed sub-band signals by values corresponding to synthesis filter bank coefficients.

    摘要翻译: 提供了一种用于产生合成音频信号的方法和装置。 该方法包括对比特流进行解码; 将解码的比特流分解成n个子带信号; 通过在频域中变换n个子带信号来产生n个变换的子带信号; 以及通过分别将n个经变换的子带信号乘以与合成滤波器组系数相对应的值来产生合成音频信号。

    Method and apparatus for encoding and decoding stereo audio
    18.
    发明授权
    Method and apparatus for encoding and decoding stereo audio 失效
    用于对立体声音频进行编码和解码的方法和装置

    公开(公告)号:US08744089B2

    公开(公告)日:2014-06-03

    申请号:US12868077

    申请日:2010-08-25

    IPC分类号: H04R5/00

    摘要: A method of encoding stereo audio that minimizes a number of pieces of side information required for parametric-encoding and parametric-decoding of the stereo audio. The side information may include parameters about interchannel intensity difference (IID), interchannel correlation (IC), overall phase difference (OPD), and interchannel phase difference (IPD), which are required to restore the mono audio to the stereo audio.

    摘要翻译: 一种对立体声音频进行编码的方法,其使得对立体声音频的参数编码和参数解码所需的多条边信息最小化。 侧面信息可以包括将单声道音频恢复到立体声音频所需的关于通道间强度差(IID),通道间相关性(IC),总体相位差(OPD)和通道间相位差(IPD))的参数。

    Method and apparatus for encoding/decoding stereo audio
    19.
    发明授权
    Method and apparatus for encoding/decoding stereo audio 有权
    用于对立体声音频进行编码/解码的方法和装置

    公开(公告)号:US08538762B2

    公开(公告)日:2013-09-17

    申请号:US12389639

    申请日:2009-02-20

    IPC分类号: G10L19/00

    CPC分类号: G10L19/008

    摘要: Provided are a method and apparatus for encoding/decoding stereo audio. In the method for encoding stereo audio, stereo audio is encoded based on at least one of the phase difference between first and second channel audios and information on an angle made by a vector on the intensity of mono-audio and a vector on the intensity of the first channel audio or a vector on the intensity of the second channel audio. Thus, the number of encoded parameters is minimized so that a compression ratio in the encoding of the stereo audio is improved.

    摘要翻译: 提供了一种用于对立体声音频进行编码/解码的方法和装置。 在对立体声音频进行编码的方法中,基于第一和第二声道音频之间的相位差中的至少一个以及由矢量对单声道的强度和向量的角度的信息对立体声音频进行编码, 第一声​​道音频或第二声道音频强度的向量。 因此,编码参数的数量被最小化,从而提高了立体声音频的编码中的压缩率。

    METHOD AND APPARATUS FOR ENCODING/DECODING AUDIO SIGNALS
    20.
    发明申请
    METHOD AND APPARATUS FOR ENCODING/DECODING AUDIO SIGNALS 审中-公开
    编码/解码音频信号的方法和装置

    公开(公告)号:US20090192789A1

    公开(公告)日:2009-07-30

    申请号:US12362060

    申请日:2009-01-29

    IPC分类号: G10L11/04 G10L19/04

    CPC分类号: G10L19/0204 G10L19/093

    摘要: Provided are a method and apparatus for effectively encoding/decoding remaining difference signals excluding sinusoidal components, from input audio signals. In the method and apparatus for encoding audio signals, sinusoidal analysis is performed on low frequency signals of less than a predetermined critical frequency in order to extract sinusoidal signals and then, an encoding operation is performed on the remaining difference signals excluding the sinusoidal signals, from input audio signals, by using linear prediction coding (LPC) analysis.

    摘要翻译: 提供了一种用于从输入音频信号有效地编码/解码除了正弦分量的剩余差分信号的方法和装置。 在用于编码音频信号的方法和装置中,对小于预定临界频率的低频信号执行正弦分析,以便提取正弦信号,然后对不包括正弦信号的剩余差信号执行编码操作, 输入音频信号,通过使用线性预测编码(LPC)分析。