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    • 2. 发明申请
    • METHOD, AN APPARATUS AND A COMPUTER PROGRAM FOR MODIFICATION OF A COMPOSITE AUDIO SIGNAL
    • 方法,装置和用于修改复合音频信号的计算机程序
    • US20140369506A1
    • 2014-12-18
    • US14374477
    • 2012-03-29
    • Juha ArrasvuoriKari JärvinenRoope JärvinenMiikka VilermoErika Reponen
    • Juha ArrasvuoriKari JärvinenRoope JärvinenMiikka VilermoErika Reponen
    • H04S7/00
    • H04S7/302G01S3/8083G10H2220/111H04R5/02H04S7/40H04S2400/01H04S2400/11H04S2400/15
    • The present invention provides an arrangement, e.g. a method, an apparatus and a computer program. The arrangement comprises obtaining information indicative of spatial positions of one or more sound sources within an audio image of a composite audio signal, obtaining information indicative of the types of the one or more sound sources, determining, for each of the one or more sound sources, a position in a display of the apparatus indicative of the spatial position of the sound source and causing an apparatus to display an item representing the sound source in the determined position in the display, wherein the item representing the sound source is determined on basis of the type of the sound source. The arrangement further comprises receiving an indication of a user action associated with an item indicative of a first sound source, determining an indication of a user selected modification of the audio image on basis of the user action, and modifying the composite audio signal in accordance with the user selected modification.
    • 本发明提供了一种装置,例如 方法,装置和计算机程序。 该装置包括获得指示复合音频信号的音频图像内的一个或多个声源的空间位置的信息,获得指示一个或多个声源的类型的信息,为一个或多个声源中的每一个确定 ,指示所述设备的显示器中的位置,所述设备的显示器指示所述声源的空间位置,并且使得设备在所述显示器中的所确定的位置中显示表示所述声源的项目,其中,所述表示所述声源的项目基于 声源的类型。 该装置还包括接收与指示第一声源的项目相关联的用户动作的指示,基于用户动作确定用户对音频图像的选择的修改的指示,以及根据用户动作修改复合音频信号 用户选择修改。
    • 9. 发明授权
    • Efficiency improvements in scalable audio coding
    • 可扩展音频编码的效率改进
    • US07277849B2
    • 2007-10-02
    • US10388379
    • 2003-03-12
    • Sebastian StreichMiikka Vilermo
    • Sebastian StreichMiikka Vilermo
    • G10L19/00
    • G10L19/24H04B1/66
    • An audio encoding method of coding audio signals into a layered data stream having a first layer and a second layer is presented. The second layer serves as an enhancement of the first layer. The method involves forming an original digital audio signal, encoding the original signal to obtain a first layer signal, producing a residual signal to reflect a difference between the original signal and the first layer signal, selecting either the original signal or the residual signal for encoding, and producing a second layer signal by encoding the selected signal. Moreover, the residual signal is evaluated and, in case the result of the evaluation meets given criteria, a predetermined low-entropy signal is selected to be encoded as the second layer signal, instead of the original signal or the residual signal.
    • 提供了一种将音频信号编码成具有第一层和第二层的分层数据流的音频编码方法。 第二层用作第一层的增强。 该方法包括形成原始数字音频信号,对原始信号进行编码以获得第一层信号,产生残余信号以反映原始信号和第一层信号之间的差异,选择原始信号或残留信号进行编码 ,并且通过对所选择的信号进行编码来产生第二层信号。 此外,评估残差信号,并且在评估结果满足给定标准的情况下,将预定的低熵信号选择为编码为第二层信号,而不是原始信号或残留信号。