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    • 6. 发明授权
    • Method and apparatus for canceling noise from sound input through microphone
    • 通过麦克风输入声音消除噪音的方法和装置
    • US08085949B2
    • 2011-12-27
    • US12076281
    • 2008-03-14
    • Kyu-hong KimKwang-cheol OhJae-hoon JeongSo-young Jeong
    • Kyu-hong KimKwang-cheol OhJae-hoon JeongSo-young Jeong
    • H04B15/00
    • H04R3/005G10L21/0208G10L2021/02166H04R2430/03H04R2430/20H04R2430/25
    • Provided is a method and apparatus for canceling noise from a sound signal input through a microphone. The method includes filtering a high-frequency signal having a frequency that is higher than a reference frequency and a low-frequency signal having a frequency that is lower than the reference frequency from input signals obtained through a microphone array, obtaining a high-frequency target signal by canceling a noise signal from the filtered high-frequency signal using a beamforming method, obtaining a low-frequency target signal by canceling a noise signal having a phase difference that is different from a phase difference of a target signal from the filtered low-frequency signal, and obtaining a sound source signal from which noise is cancelled, by synthesizing the obtained high-frequency target signal with the obtained low-frequency target signal. Thus, it is possible to accurately obtain a target sound source signal by minimizing signal distortion occurring in a low-frequency band in a digital sound obtaining apparatus having a small-size microphone array and accurately canceling or attenuating unnecessary noise.
    • 提供一种用于从通过麦克风输入的声音信号中消除噪声的方法和装置。 该方法包括:从通过麦克风阵列获得的输入信号中对具有高于参考频率的频率的高频信号和具有低于参考频率的频率的低频信号进行滤波,从而获得高频目标 通过使用波束成形方法从滤波的高频信号中消除噪声信号,通过消除具有与来自滤波的低通滤波器的目标信号的相位差不同的相位差的噪声信号来获得低频目标信号, 通过利用所获得的低频目标信号合成所获得的高频目标信号,获得消除噪声的声源信号。 因此,通过使具有小尺寸麦克风阵列的数字声音获取装置中的低频带中发生的信号失真最小化并且精确地消除或衰减不必要的噪声,可以准确地获得目标声源信号。
    • 9. 发明申请
    • Method and apparatus for canceling noise from sound input through microphone
    • 通过麦克风输入声音消除噪音的方法和装置
    • US20090141907A1
    • 2009-06-04
    • US12076281
    • 2008-03-14
    • Kyu-hong KimKwang-cheol OhJae-hoon JeongSo-Young Jeong
    • Kyu-hong KimKwang-cheol OhJae-hoon JeongSo-Young Jeong
    • G10K11/16
    • H04R3/005G10L21/0208G10L2021/02166H04R2430/03H04R2430/20H04R2430/25
    • Provided is a method and apparatus for canceling noise from a sound signal input through a microphone. The method includes filtering a high-frequency signal having a frequency that is higher than a reference frequency and a low-frequency signal having a frequency that is lower than the reference frequency from input signals obtained through a microphone array, obtaining a high-frequency target signal by canceling a noise signal from the filtered high-frequency signal using a beamforming method, obtaining a low-frequency target signal by canceling a noise signal having a phase difference that is different from a phase difference of a target signal from the filtered low-frequency signal, and obtaining a sound source signal from which noise is cancelled, by synthesizing the obtained high-frequency target signal with the obtained low-frequency target signal. Thus, it is possible to accurately obtain a target sound source signal by minimizing signal distortion occurring in a low-frequency band in a digital sound obtaining apparatus having a small-size microphone array and accurately canceling or attenuating unnecessary noise.
    • 提供一种用于从通过麦克风输入的声音信号中消除噪声的方法和装置。 该方法包括:从通过麦克风阵列获得的输入信号中对具有高于参考频率的频率的高频信号和具有低于参考频率的频率的低频信号进行滤波,从而获得高频目标 通过使用波束成形方法从滤波后的高频信号中消除噪声信号,通过消除具有与来自滤波的低通滤波器的目标信号的相位差不同的相位差的噪声信号来获得低频目标信号, 通过利用所获得的低频目标信号合成所获得的高频目标信号,获得消除噪声的声源信号。 因此,通过使具有小尺寸麦克风阵列的数字声音获取装置中的低频带中发生的信号失真最小化并且精确地消除或衰减不必要的噪声,可以准确地获得目标声源信号。