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    • 4. 发明申请
    • Method and apparatus to provide active audio matrix decoding based on the positions of speakers and a listener
    • 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
    • US20070140498A1
    • 2007-06-21
    • US11641080
    • 2006-12-19
    • Han-gil MoonManish Arora
    • Han-gil MoonManish Arora
    • H04R5/00
    • H04S5/005
    • 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.
    • 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。
    • 5. 发明申请
    • Method and apparatus to reconstruct a high frequency component
    • 重建高频分量的方法和装置
    • US20070129036A1
    • 2007-06-07
    • US11586544
    • 2006-10-26
    • Manish Arora
    • Manish Arora
    • G10K11/16H04B1/16
    • G10L21/038
    • A method and apparatus to restore a high frequency component. A correlation between an input signal and previously stored noise samples is obtained and a bandwidth of the input signal is detected according to the correlation. The detected input signal bandwidth is split into a predetermined number of sub-bands. A level of high frequency sub-band signals generated by performing a predetermined nonlinear operation on the split sub-bands is controlled in response to energy levels of the high frequency sub-bands to obtain restored signals. The restored signals and the input signal are combined to generate a target audio signal.
    • 一种恢复高频分量的方法和装置。 获得输入信号和先前存储的噪声样本之间的相关性,并根据相关性检测输入信号的带宽。 检测到的输入信号带宽被分成预定数量的子带。 响应于高频子带的能级来控制通过对分割的子带执行预定非线性运算而产生的高频子带信号的电平,以获得恢复的信号。 恢复的信号和输入信号被组合以产生目标音频信号。
    • 7. 发明申请
    • Method and apparatus to synchronize audio and video
    • 音频和视频同步的方法和设备
    • US20060078305A1
    • 2006-04-13
    • US11124092
    • 2005-05-09
    • Manish AroraLarycguin Serguei
    • Manish AroraLarycguin Serguei
    • H04N5/76H04N7/08H04N7/06
    • G11B27/10G11B27/28H04N5/04H04N5/147H04N5/4401H04N5/602H04N7/08H04N21/233H04N21/23418H04N21/422H04N21/4305H04N21/4307H04N21/44008
    • A method and an apparatus to synchronize an audio signal and a video signal. The method includes: displaying video on a screen that corresponds to an audio signal including a high frequency component having a predetermined pattern inserted therein to indicate when a scene change occurs in a video signal, detecting a scene change in the displayed video and detecting the high frequency component having the predetermined pattern in the audio signal, calculating a time difference between a time when the scene change is detected in the displayed video and a time when the high frequency component having the predetermined pattern is detected in the audio signal, and controlling delay times of the audio signal and the video signal according to the calculated time difference. Accordingly, the audio signal and the video signal can be automatically synchronized without performing a separate measuring operation.
    • 一种使音频信号和视频信号同步的方法和装置。 该方法包括:在屏幕上显示视频,该屏幕对应于包括插入其中的预定图案的高频分量的音频信号,以指示在视频信号中何时发生场景变化,检测所显示的视频中的场景变化并检测高 在音频信号中具有预定模式的频率分量,计算在所显示的视频中检测到场景变化的时间与在音频信号中检测到具有预定模式的高频分量的时间之间的时间差,以及控制延迟 根据计算出的时间差,音频信号和视频信号的次数。 因此,音频信号和视频信号可以自动同步而不进行单独的测量操作。
    • 10. 发明授权
    • Method and apparatus to provide active audio matrix decoding based on the positions of speakers and a listener
    • 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
    • US08111830B2
    • 2012-02-07
    • US11641080
    • 2006-12-19
    • Han-gil MoonManish Arora
    • Han-gil MoonManish Arora
    • H04R5/00
    • H04S5/005
    • 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.
    • 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。