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    METHOD AND APPARATUS FOR PROCESSING AUDIO SIGNAL
    1.
    发明申请
    METHOD AND APPARATUS FOR PROCESSING AUDIO SIGNAL 审中-公开
    处理音频信号的方法和装置

    公开(公告)号：US20160277865A1

    公开(公告)日：2016-09-22

    申请号：US15031275

    申请日：2014-10-22

    申请人： INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY ,  WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    发明人： Taegyu LEE ,  Hyunoh OH ,  Youngcheol PARK ,  Daehee YOUN ,  Jeongil SEO ,  Yongju LEE ,  Seungkwon BEACK ,  Kyeongok KANG ,  Daeyoung JANG

    IPC分类号： H04S3/00 ,  G10L19/008

    CPC分类号： G10L19/008 ,  G10H2250/111 ,  G10H2250/145 ,  H04R3/00 ,  H04R5/033 ,  H04S3/00 ,  H04S3/002 ,  H04S3/004 ,  H04S3/008 ,  H04S2400/01 ,  H04S2420/01 ,  H04S2420/03

    摘要： The present invention relates to a method and an apparatus for processing a signal, which are used to effectively reproduce an audio signal, and more particularly, to a method and an apparatus for processing an audio signal, which are used for implementing a filtering for input audio signals with a low computational complexity.To this end, provided are a method for processing an audio signal including: receiving an input audio signal; receiving truncated subband filter coefficients for filtering each subband signal of the input audio signal, the truncated subband filter coefficients being at least a portion of subband filter coefficients obtained from binaural room impulse response (BRIR) filter coefficients for binaural filtering of the input audio signal, the lengths of the truncated subband filter coefficients being determined based on filter order information obtained by at least partially using characteristic information extracted from the corresponding subband filter coefficients, and the truncated subband filter coefficients being constituted by at least one FFT filter coefficient in which fast Fourier transform (FFT) by a predetermined block size in the corresponding subband has been performed; performing the fast Fourier transform of the subband signal based on a predetermined subframe size in the corresponding subband; generating a filtered subframe by multiplying the fast Fourier transformed subframe and the FFT filter coefficients; inverse fast Fourier transforming the filtered subframe; and generating a filtered subband signal by overlap-adding at least one subframe which is inverse fast Fourier transformed and an apparatus for processing an audio signal using the same.

    摘要翻译： 为此，提供了一种处理音频信号的方法，包括：接收输入音频信号; 接收用于对输入音频信号的每个子带信号进行滤波的截断的子带滤波器系数，截断的子带滤波器系数是从用于输入音频信号的双耳滤波的双耳室脉冲响应（BRIR）滤波器系数获得的子带滤波器系数的至少一部分， 基于通过至少部分地使用从相应的子带滤波器系数提取的特征信息获得的滤波器顺序信息来确定截断的子带滤波器系数的长度，并且截断的子带滤波器系数由至少一个FFT滤波器系数构成，其中快速傅里叶 已经执行了在相应子带中的预定块大小的变换（FFT）; 基于相应子带中的预定子帧大小执行子带信号的快速傅里叶变换; 通过乘以快速傅里叶变换子帧和FFT滤波器系数来产生滤波后的子帧; 对经滤波的子帧进行快速傅立叶逆变换; 以及通过重叠添加至少一个逆快速傅里叶变换的子帧和使用该子帧处理音频信号的装置来生成滤波后的子带信号。

    METHOD FOR GENERATING FILTER FOR AUDIO SIGNAL AND PARAMETERIZING DEVICE THEREFOR
    5.
    发明申请
    METHOD FOR GENERATING FILTER FOR AUDIO SIGNAL AND PARAMETERIZING DEVICE THEREFOR 审中-公开
    用于生成用于音频信号的滤波器及其参数设备的方法

    公开(公告)号：US20160275956A1

    公开(公告)日：2016-09-22

    申请号：US15031274

    申请日：2014-10-22

    申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY ,  WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

    发明人： Taegyu LEE ,  Hyunoh OH ,  Jeongil SEO ,  Yongju LEE ,  Seungkwon BEACK ,  Kyeongok KANG ,  Daeyoung JANG ,  Youngcheol PARK ,  Daehee YOUN

    IPC分类号： G10L19/008 ,  H04S3/00

    CPC分类号： G10L19/008 ,  G10H2250/111 ,  G10H2250/145 ,  H04R3/00 ,  H04R5/033 ,  H04S3/00 ,  H04S3/002 ,  H04S3/004 ,  H04S3/008 ,  H04S2400/01 ,  H04S2420/03

    摘要： The present invention relates to a method and an apparatus for processing a signal, which are used to effectively reproduce an audio signal, and more particularly, to a method for generating a filter for an audio signal, which are used for implementing a filtering for input audio signals with a low computational complexity and a parameterization apparatus therefor.To this end, provided are a method for generating a filter of an audio signal, including: receiving at least one proto-type filter coefficient for filtering each subband signal of an input audio signal; converting the proto-type filter coefficient into a plurality of subband filter coefficients; truncating each of the subband filter coefficients based on filter order information obtained by at least partially using characteristic information extracted from the corresponding subband filter coefficients, the length of at least one truncated subband filter coefficients being different from the length of truncated subband filter coefficients of another subband; and generating FFT filter coefficients by fast Fourier transforming (FFT) the truncated subband filter coefficients by a predetermined block size in the corresponding subband and a parameterization unit using the same.

    摘要翻译： 为此，提供了一种用于产生音频信号的滤波器的方法，包括：接收用于滤波输入音频信号的每个子带信号的至少一个原型滤波器系数; 将原型滤波器系数转换为多个子带滤波器系数; 基于通过至少部分地使用从相应的子带滤波器系数提取的特征信息而获得的滤波器顺序信息来截断每个子带滤波器系数，至少一个截断的子带滤波器系数的长度与另一个截止的子带滤波器系数的长度不同 子带 以及通过在相应子带中以预定的块大小快速傅里叶变换（FFT）所述截断的子带滤波器系数并使用该FFT滤波器系数的参数化单元来生成FFT滤波器系数。