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    • 1. 发明专利
    • Beam-forming system for estimating voice arrival direction, moving device, and beam forming method for estimating voice arrival direction
    • 用于估计语音到达方向的BEAM形成系统,移动装置和用于估计语音到达方向的波束形成方法
    • JP2008175733A
    • 2008-07-31
    • JP2007010322
    • 2007-01-19
    • Fujitsu LtdKeio Gijuku学校法人慶應義塾富士通株式会社
    • SAKAI KATSUSHIYASUKAWA YUSUKEOMORI HIROMITSUSHIMADA YOSHIAKI
    • G01S3/808G01S3/48
    • PROBLEM TO BE SOLVED: To estimate the arrival direction of voice issued from a moving sound source, and to perform beam-forming of the voice in real time.
      SOLUTION: A beam-forming system 1 performs Fourier transforms the voice received from the sound source 2 in a short time for each frame, acquires a received signal vector about the present frame, updates the correlation matrix up to the previous frame of the present frame using the received signal vector, and calculates the correlation matrix up to the present frame. The voice arrival direction estimating beam-forming system 1 calculates an MUSIC spectrum based on the correlation matrix up to the present frame, and calculates the voice arrival direction based on the MUSIC spectrum. The system 1 performs beam-forming processing based on the received signal vector and the arrival direction obtained by the short-time Fourier transform.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:估计从移动声源发出的语音的到达方向,并实时地进行语音的波束形成。 解决方案:波束成形系统1对于每帧在短时间内对从声源2接收的声音进行傅立叶变换,获取关于当前帧的接收信号矢量,将相关矩阵更新到前一帧 使用接收信号向量的当前帧,并计算直到当前帧的相关矩阵。 语音到达方向估计波束形成系统1基于直到当前帧的相关矩阵来计算MUSIC频谱,并且基于MUSIC频谱来计算声音到达方向。 系统1基于通过短时傅里叶变换获得的接收信号矢量和到达方向,执行波束形成处理。 版权所有(C)2008,JPO&INPIT