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    Method and apparatus for encoding and decoding audio/speech signal
    12.
    发明授权
    Method and apparatus for encoding and decoding audio/speech signal 有权
    用于对音频/语音信号进行编码和解码的方法和装置

    公开(公告)号：US09418666B2

    公开(公告)日：2016-08-16

    申请号：US14132224

    申请日：2013-12-18

    Applicant: SAMSUNG Electronics Co., Ltd.

    Inventor： Chang-yong Son ,  Eun-mi Oh ,  Jung-hoe Kim ,  Ho-sang Sung ,  Kang-eun Lee ,  Ki-hyun Choo

    IPC: G10L19/00 ,  G10L19/025

    CPC classification number: G10L19/00 ,  G10L19/025

    Abstract: Provided is a method of encoding an audio/speech signal, the method including determining a variable length of a frame, that is, a processing unit of an input signal in accordance with a position of an attack in the input signal; transforming each frame of the input signal to a frequency domain and dividing the frame into a plurality of sub frequency bands; and, if a signal of a sub frequency band is determined to be encoded in the frequency domain, encoding the signal of the sub frequency band in the frequency domain, and if the signal of the sub frequency band is determined to be encoded in a time domain, inverse transforming the signal of the sub frequency band to the time domain and encoding the inverse transformed signal in the time domain. According to the present invention, the audio/speech signal may be efficiently encoded by controlling time resolution and frequency resolution.

    Abstract translation: 提供了一种对音频/语音信号进行编码的方法，该方法包括根据输入信号中的攻击位置来确定帧的可变长度，即输入信号的处理单元; 将所述输入信号的每个帧变换为频域并将所述帧划分为多个子频带; 并且如果确定在频域中编码子频带的信号，则对频域中的子频带的信号进行编码，并且如果确定子频带的信号被编码在一个时间 域，将子频带的信号逆变换到时域，并对时域中的逆变换信号进行编码。 根据本发明，可以通过控制时间分辨率和频率分辨率来有效地编码音频/语音信号。

    METHOD AND APPARATUS FOR QUADRATURE MIRROR FILTERING
    13.
    发明申请
    METHOD AND APPARATUS FOR QUADRATURE MIRROR FILTERING 有权
    方法和装置用于准直镜过滤

    公开(公告)号：US20150120306A1

    公开(公告)日：2015-04-30

    申请号：US14524306

    申请日：2014-10-27

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Kang-eun LEE ,  Do-hyung Kim ,  Chang-yong Son ,  Si-hwa Lee ,  Seok-hwan Jo

    IPC: G10L19/008

    CPC classification number: G10L19/0204 ,  G06F9/3552 ,  H03H17/0272

    Abstract: A method of performing quadrature mirror filter (QMF) synthesis filtering includes recording new samples corresponding to a current time slot at positions of samples to be discarded in a first array that includes modulated QMF sub-band samples. The method further includes extracting samples from the first array to remove aliasing between adjacent sub-bands, determining filter coefficients corresponding to the extracted samples by using modulo operation, and synthesizing a time domain sample where aliasing is removed by using the extracted samples and the filter coefficients.

    Abstract translation: 执行正交镜像滤波器（QMF）合成滤波的方法包括在包括调制的QMF子带样本的第一阵列中记录与当前时隙对应的待采样样本位置的新样本。 该方法还包括从第一阵列提取样本以消除相邻子带之间的混叠，通过使用模运算确定与提取样本相对应的滤波器系数，以及通过使用提取的样本和滤波器合成去除混叠的时域采样 系数。

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