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    • 15. 发明授权
    • Stereophonic signal processing apparatus
    • 立体声信号处理装置
    • US06522751B1
    • 2003-02-18
    • US09744729
    • 2001-01-29
    • Hiroshi IwaseTakahiro Kubota
    • Hiroshi IwaseTakahiro Kubota
    • H04R500
    • H04S1/00
    • A stereophonic signal processing apparatus, capable of reproducing sounds of musical instruments in high fidelity while effectively eliminating vocal signals, includes a right filter combination 121 and 122 for extracting a right low-frequency signal and a right high-frequency signal from a right input signal, a left filter combination 111 and 112 for extracting a left low-frequency signal and a left high-frequency signal from a left input signal, a subtraction circuit 131 for subtracting a right input signal and a left input signal and thereby generating a vocal elimination signal, a right addition circuit 123 for adding a right low-frequency signal and a right high-frequency signal from the right filter combination to a vocal elimination signal from the subtraction circuit and thereby generating a right output signal, a left addition circuit 113 for adding a left low-frequency signal and a left high-frequency signal from the left filter combination to a vocal elimination signal from the subtraction circuit and thereby generating a left output signal, and a controller 140 for changing characteristics of both of the right filter combination and the left filter combination according to at least one of a right input signal and a left input signal.
    • 一种立体声信号处理装置,能够以高保真度再现乐器的声音,同时有效地消除声音信号,包括用于从右输入信号中提取右低频信号和右高频信号的右滤波器组合121和122 ,左滤波器组合111和112,用于从左输入信号中提取左低频信号和左高频信号;减法电路131,用于减去右输入信号和左输入信号,从而产生声音消除 信号,右加法电路123,用于将来自右滤波器组合的右低频信号和右高频信号与来自减法电路的声音消除信号相加,从而产生右输出信号;左加法电路113,用于 将左低频信号和左高频信号从左滤波器组合添加到声消除信号 减法电路,从而产生左输出信号;以及控制器140,用于根据右输入信号和左输入信号中的至少一个来改变右滤波器组合和左滤波器组合两者的特性。
    • 19. 发明授权
    • Stereo signal processing apparatus
    • 立体声信号处理装置
    • US06690799B1
    • 2004-02-10
    • US09588388
    • 2000-06-06
    • Hiroshi IwaseTakahiro Kubota
    • Hiroshi IwaseTakahiro Kubota
    • H04R500
    • H04S1/00
    • To realize a stereo signal processing apparatus which effectively removes vocal signals, without degradation of stereo effect, with a simple construction. The stereo signal processing apparatus, which removes vocal signals included in right and left input signals, comprises right filter means 121, 122 for extracting a right low-frequency signal and a right high-frequency signal from a right input signal, left filter means 111 and 112 for extracting a left low-frequency signal and a left high-frequency signal from a left input signal, subtraction means 131 for performing subtraction between the right input signal and the left input signal to generate a vocal removal signal, right addition means 123 for adding the right low-frequency signal and the right high-frequency signal from said right filter means to the vocal removal signal from said subtraction means so as to generate a right output signal, a left addition means 113 for adding the left low-frequency signal and the left high-frequency signal from said left filter means to the vocal removal signal from said subtraction means so as to generate a left output signal. The right filter means and the left filter means comprise filters having filter types different from each other.
    • 实现立体声信号处理装置,其以简单的结构有效地去除声音信号而不降低立体声效果。立体声信号处理装置除去右和左输入信号中包括的声音信号,包括右滤波器装置121,122,用于 从右输入信号提取右低频信号和右高频信号,左滤波器装置111和112,用于从左输入信号中提取左低频信号和左高频信号,减法装置131 用于在右输入信号和左输入信号之间进行减法以产生声音去除信号;右加法装置123,用于将来自所述右滤波器装置的右低频信号和右高频信号加到来自 所述减法装置产生右输出信号;左加法装置113,用于将左低频信号和左高频信号相加 来自所述左滤波器装置的信号信号到来自所述减法装置的声音去除信号,以便产生左输出信号。 右滤波器装置和左滤波器装置包括具有彼此不同的滤波器类型的滤波器。