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    • 21. 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。
    • 26. 发明授权
    • Audio encoding method and apparatus, and audio decoding method and apparatus, for processing death sinusoid and general continuation sinusoid
    • 音频编码方法和装置,以及音频解码方法和装置,用于处理死亡正弦曲线和一般延续正弦曲线
    • US08224659B2
    • 2012-07-17
    • US12174875
    • 2008-07-17
    • Nam-suk LeeGeon-hyoung Lee
    • Nam-suk LeeGeon-hyoung Lee
    • G10L19/00G10L15/00G10L11/04
    • G10L19/093
    • An audio encoding method and apparatus, and an audio decoding method and apparatus, for processing a death sinusoid and a general continuation sinusoid. Using the unique characteristic of a death sinusoid, in that the death sinusoid has a tendency such that an amplitude component of the death sinusoid is less than that of a previous sinusoid, a method of adding an encoding syntax by distinguishing a general continuation sinusoid from a death sinusoid is provided. That is, when difference coding of the amplitude component of a death sinusoid is performed, the number of bits used when a negative number is coded is less than the number of bits used when a positive number is coded, in a Huffman table. By using this method, a bit rate in an entire coding decreases.
    • 一种用于处理死亡正弦曲线和一般持续正弦曲线的音频编码方法和装置以及音频解码方法和装置。 使用死亡正弦曲线的独特特征,因为死亡正弦曲线具有使得死亡正弦曲线的幅度分量小于先前正弦曲线的幅度分量的趋势,一种通过将一般的连续正弦曲线与 提供死亡正弦曲线。 也就是说,当执行死亡正弦曲线的振幅分量的差分编码时,当编码负数时使用的位数小于霍夫曼表中正数编码时所使用的位数。 通过使用该方法,整个编码中的比特率降低。