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    • 3. 发明授权
    • Method and apparatus for sinusoidal audio coding
    • 用于正弦音频编码的方法和装置
    • US08290770B2
    • 2012-10-16
    • US12026066
    • 2008-02-05
    • Nam-suk LeeGeon-hyoung LeeJae-one OhChul-woo LeeJong-hoon Jeong
    • Nam-suk LeeGeon-hyoung LeeJae-one OhChul-woo LeeJong-hoon Jeong
    • G10L19/14
    • G10L19/093
    • Provided are a method and apparatus for sinusoidal audio coding, which employs a tracking method for further effective coding of sinusoids extracted in the process of a sinusoidal analysis of parametric coding. The sinusoidal audio coding method includes: extracting sinusoids of a current frame by performing a sinusoidal analysis on an input audio signal; with respect to each of the extracted sinusoids, setting a mode selected from a birth mode in which a sinusoid is newly generated irrespective of sinusoids of a previous frame, a continuation mode in which the sinusoid is only one sinusoid continued from one of the sinusoids of the previous frame, and a branch mode in which the sinusoid is one of a plurality of sinusoids continued from one of the sinusoids of the previous frame; and coding the extracted sinusoids according to the selected mode. Accordingly, a plurality of sinusoids that can be continued from one previous track component are set to the continuation mode or the branch mode. Therefore, the number of bits of coded data is significantly reduced, compared with the case of the birth mode.
    • 提供了一种用于正弦音频编码的方法和装置,其采用跟踪方法用于在参数编码的正弦分析的过程中提取的正弦曲线的进一步有效编码。 正弦音频编码方法包括:通过对输入音频信号执行正弦分析来提取当前帧的正弦曲线; 对于每个提取的正弦曲线,设定选自新生成正弦曲线的诞生模式的模式,而不管前一帧的正弦曲线,其中正弦曲线仅仅是一个正弦曲线的连续模式,其中一个正弦曲线从 前一帧,以及分支模式,其中正弦曲线是从前一帧的正弦曲线之一连续的多个正弦曲线之一; 并根据所选择的模式对所提取的正弦曲线进行编码。 因此,可以从一个先前的轨道分量继续的多个正弦曲线被设置为连续模式或分支模式。 因此,与出生模式的情况相比,编码数据的位数显着减少。
    • 9. 发明申请
    • METHOD AND APPARATUS FOR ENCODING AND DECODING CONTINUATION SINUSOIDAL SIGNAL OF AUDIO SIGNAL
    • 编码和解码音频信号连续信号信号的方法与装置
    • US20090063161A1
    • 2009-03-05
    • US12167578
    • 2008-07-03
    • Nam-suk LeeGeon-hyoung LeeJong-hoon Jeong
    • Nam-suk LeeGeon-hyoung LeeJong-hoon Jeong
    • G10L19/00
    • G10L19/093
    • Provided are an audio signal encoding method and apparatus that encode a continuation sinusoidal signal of a current frame in different ways according to information on a sinusoidal signal of a previous frame by using the characteristics of the continuation sinusoidal signal, and an audio signal decoding method and apparatus. The audio signal encoding method includes extracting a sinusoidal signal of a current frame by performing sinusoidal analysis on an input audio signal; extracting a continuation sinusoidal signal of the current frame, which is connected to a sinusoidal signal of a previous frame, by performing sinusoidal tracking of the extracted sinusoidal signal of the current frame; and encoding the continuation sinusoidal signal in different ways by using information on the sinusoidal signal of the previous frame, which is connected to the continuation sinusoidal signal.
    • 提供了一种音频信号编码方法和装置,其通过使用连续正弦信号的特性,根据关于前一帧的正弦信号的信息以不同的方式编码当前帧的连续正弦信号,以及音频信号解码方法和 仪器。 音频信号编码方法包括通过对输入音频信号执行正弦分析来提取当前帧的正弦信号; 通过对当前帧的提取的正弦信号进行正弦跟踪,提取连接到前一帧的正弦信号的当前帧的连续正弦信号; 并通过使用与连续正弦信号连接的前一帧的正弦信号的信息,以不同的方式对连续正弦信号进行编码。