Apparatus and method for restoring multi-channel audio signal using HE-AAC decoder and MPEG surround decoder
    1.
    发明授权
    Apparatus and method for restoring multi-channel audio signal using HE-AAC decoder and MPEG surround decoder 有权
    使用HE-AAC解码器和MPEG环绕解码器恢复多声道音频信号的装置和方法

    公开(公告)号:US08848926B2

    公开(公告)日:2014-09-30

    申请号:US13449883

    申请日:2012-04-18

    CPC classification number: G10L19/008 G10L19/02 G10L19/18

    Abstract: Provided is a method for controlling synchronizing downmix signals and MPEG surround side information signals by controlling a delay according to the kind of downmix audio signals in an MPEG surround decoder. When multi-channel audio signals are restored using an HE-AAC decoder and a low-power MPEG surround decoder and complex QMF signals outputted from the HE-AAC decoder are used as downmix signals, a delay unit compensates for a delay caused in a real-to-complex converter. Anther delay unit delays spatial parameters to compensate for a delay caused in QMF and Nyquist banks when time-domain downmix signals are used. Also, when multi-channel audio signals are restored using an HE-AAC decoder and a high-quality MPEG surround decoder and complex QMF signals outputted from the HE-AAC decoder are used as downmix signals, a delay unit compensates for a delay caused in a real-to-complex converter.

    Abstract translation: 提供了一种通过根据MPEG环绕解码器中的下混音频信号的种类来控制延迟来控制同步下混信号和MPEG环绕侧信息信号的方法。 当使用HE-AAC解码器和低功率MPEG环绕解码器来恢复多声道音频信号时,使用从HE-AAC解码器输出的复杂QMF信号作为下混合信号,延迟单元补偿实际产生的延迟 复合转换器。 花时延单元延迟空间参数以补偿在使用时域降混信号时在QMF和奈奎斯特银行中引起的延迟。 此外,当使用HE-AAC解码器和高质量MPEG环绕解码器恢复多声道音频信号并且将从HE-AAC解码器输出的复杂QMF信号用作下混合信号时,延迟单元补偿由 一个真实到复杂的转换器。

    Method and apparatus for separating musical sound source using time and frequency characteristics
    3.
    发明授权
    Method and apparatus for separating musical sound source using time and frequency characteristics 失效
    使用时间和频率特性分离音乐声源的方法和装置

    公开(公告)号:US08563842B2

    公开(公告)日:2013-10-22

    申请号:US13076630

    申请日:2011-03-31

    CPC classification number: G10H1/0008 G10H2210/056 G10H2250/235

    Abstract: A method and apparatus for separating and extracting main sound sources from a mixed musical sound signal are provided. A musical sound source separation apparatus may include an prior information signal compressor to compress an prior information signal including a characteristic of a predetermined sound source, a mixed signal divider to divide a mixed signal including a plurality of sound sources into a plurality of segments, a Nonnegative Matrix Partial Co-Factorization (NMPCF) analyzer to acquire common information shared by the plurality of segments, by applying an NMPCF algorithm to the prior information signal, and a target musical instrument signal separator to separate a target musical instrument signal corresponding to the predetermined sound source from the mixed signal, based on the common information.

    Abstract translation: 提供了一种用于从混合音乐声音信号中分离和提取主要声源的方法和装置。 音乐声源分离装置可以包括用于压缩包括预定声源的特征的先前信息信号的先前信息信号压缩器,将包括多个声源的混合信号划分成多个段的混合信号分频器, 非负矩阵部分协同因子分解器(NMPCF)分析器,通过对先验信息信号应用NMPCF算法和目标乐器信号分离器来获取由多个段共享的共同信息,以分离与预定信号相对应的目标乐器信号 来自混合信号的声源,基于通用信息。

    System and method for transmitting/receiving object-based audio
    7.
    发明授权
    System and method for transmitting/receiving object-based audio 有权
    用于发送/接收基于对象的音频的系统和方法

    公开(公告)号:US07912566B2

    公开(公告)日:2011-03-22

    申请号:US11591157

    申请日:2006-11-01

    CPC classification number: H04S7/30 G06F3/16 H04S2400/11

    Abstract: Provided is a system and method for transmitting/receiving an object-based audio. The system includes: a pre-processing unit for receiving an audio signal from diverse sources of outside and creating an object-based audio signal through a pre-processing procedure; an object-based audio editing unit for editing the object-based audio signal from the pre-processing unit and organizing an audio scene; an object-based audio coding unit for coding/multiplexing information on the object-based audio signal and the audio scene from the object-based audio editing unit and creating object-based audio contents; and a transmitting unit for transmitting the object-based audio contents from the object-based audio coding unit.

    Abstract translation: 提供了一种用于发送/接收基于对象的音频的系统和方法。 该系统包括:预处理单元,用于从外部的不同源接收音频信号,并通过预处理过程创建基于对象的音频信号; 基于对象的音频编辑单元,用于从预处理单元编辑基于对象的音频信号并组织音频场景; 基于对象的音频编码单元,用于从基于对象的音频编辑单元对基于对象的音频信号和音频场景的信息进行编码/复用,并创建基于对象的音频内容; 以及发送单元,用于从基于对象的音频编码单元发送基于对象的音频内容。

    APPARATUS AND METHOD FOR RESTORING MULTI-CHANNEL AUDIO SIGNAL USING HE-AAC DECODER AND MPEG SURROUND DECODER
    8.
    发明申请
    APPARATUS AND METHOD FOR RESTORING MULTI-CHANNEL AUDIO SIGNAL USING HE-AAC DECODER AND MPEG SURROUND DECODER 有权
    使用HE-AAC解码器和MPEG环绕解码器恢复多通道音频信号的装置和方法

    公开(公告)号:US20110044457A1

    公开(公告)日:2011-02-24

    申请号:US12307289

    申请日:2007-07-04

    CPC classification number: G10L19/008 G10L19/02 G10L19/18

    Abstract: Provided is a method for controlling synchronizing downmix signals and MPEG surround side information signals by controlling a delay according to the kind of downmix audio signals in an MPEG surround decoder. When multi-channel audio signals are restored using an HE-AAC decoder and a low-power MPEG surround decoder and complex QMF signals outputted from the HE-AAC decoder are used as downmix signals, a delay unit compensates for a delay caused in a real-to-complex converter. Anther delay unit delays spatial parameters to compensate for a delay caused in QMF and Nyquist banks when time-domain downmix signals are used. Also, when multi-channel audio signals are restored using an HE-AAC decoder and a high-quality MPEG surround decoder and complex QMF signals outputted from the HE-AAC decoder are used as downmix signals, a delay unit compensates for a delay caused in a real-to-complex converter.

    Abstract translation: 提供了一种通过根据MPEG环绕解码器中的下混音频信号的种类来控制延迟来控制同步下混信号和MPEG环绕侧信息信号的方法。 当使用HE-AAC解码器和低功率MPEG环绕解码器来恢复多声道音频信号时,使用从HE-AAC解码器输出的复杂QMF信号作为下混合信号,延迟单元补偿实际产生的延迟 复合转换器。 花时延单元延迟空间参数以补偿在使用时域降混信号时在QMF和奈奎斯特银行中引起的延迟。 此外,当使用HE-AAC解码器和高质量MPEG环绕解码器恢复多声道音频信号并且将从HE-AAC解码器输出的复杂QMF信号用作下混合信号时,延迟单元补偿由 一个真实到复杂的转换器。

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