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    • 8. 发明授权
    • Voice emitting and collecting device
    • 语音发射和收集装置
    • US08447590B2
    • 2013-05-21
    • US12306413
    • 2007-06-20
    • Toshiaki IshibashiRyo TanakaSatoshi Ukai
    • Toshiaki IshibashiRyo TanakaSatoshi Ukai
    • G10L11/00
    • H04R3/005H04M3/56H04M3/568H04M2201/18H04R1/406H04R2201/403H04R2430/20
    • A voice emitting and collecting device that is capable of picking up/outputting a voice emitted from a talker at a high S/N ratio by eliminating the influence of a diffracting voice despite a simple configuration is provided. A signal differencing circuit 191 outputs difference signals MS1 to MS4 between voice collecting beam signals MB11 to MB14 and voice collecting beam signals MB21 to MB24. A level comparator 195 selects the difference signal having a maximum level. A signal selecting circuit 196 selects voice collecting beam signals MB1x, MB2x of the difference signal MS that is selected/pointed by the level comparator 195. A subtracter 199 subtracts the voice collecting beam signal MB2x from the voice collecting beam signal MB1x, and output a resultant signal. Accordingly, main components of the diffracting voice can be removed from the voice collecting beam signal.
    • 提供了一种语音发射和收集装置,其能够通过消除尽管简单配置的衍射语音的影响,以高S / N比来拾取/输出从讲话者发出的语音。 信号差分电路191输出语音采集束信号MB11〜MB14和声音采集束信号MB21〜MB24之间的差信号MS1〜MS4。 电平比较器195选择具有最大电平的差分信号。 信号选择电路196选择由电平比较器195选择/指示的差分信号MS的语音采集束信号MB1x,MB2x。减法器199从语音采集束信号MB1x中减去语音采集束信号MB2x,并输出 结果信号。 因此,可以从声音采集束信号中去除衍射声音的主要成分。