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    • 5. 发明授权
    • Method of and apparatus for controlling sound field through array speaker
    • 通过阵列扬声器控制声场的方法和装置
    • US08045722B2
    • 2011-10-25
    • US12149374
    • 2008-04-30
    • Jung-woo ChoiYoung-tae KimJung-ho KimSang-chul Ko
    • Jung-woo ChoiYoung-tae KimJung-ho KimSang-chul Ko
    • H04R5/02H04R25/00
    • H04S3/002
    • Provided are a method and apparatus for controlling a sound field through an array speaker. The method includes calculating a coefficient of a filter that controls sound pressure of an input signal, based on a sound pressure ratio of a suppression area that suppresses sound emitted from an array speaker and an emphasis area that emphasizes the sound, and sound pressure efficiency in the emphasis area, generating a plurality of output signals that focuses the sound to the emphasis area by filtering the input signal based on the calculated coefficient of the filter, and outputting a sound field controlled sound based on the generated plurality of output signals. Accordingly, a listener in a predetermined direction and distance from the array speaker can clearly hear sound, without wearing an earphone or a headset so as to focus the sound only to the listener.
    • 提供了一种通过阵列扬声器来控制声场的方法和装置。 该方法包括基于抑制从阵列扬声器发出的声音的抑制区域的声压比和强调声音的强调区域来计算控制输入信号的声压的滤波器的系数,以及声压效率 强调区域,通过基于计算出的滤波器系数,对输入信号进行滤波,生成多个输出信号,将声音聚焦到加重区域,并根据生成的多个输出信号输出声场受控声音。 因此,与阵列扬声器相距一定方向和距离的收听者可以清晰地听到声音,而不戴耳机或耳机,以将声音聚焦到听众。
    • 7. 发明申请
    • Method and apparatus for outputting sound source signal by using virtual speaker
    • 使用虚拟扬声器输出声源信号的方法和装置
    • US20090136045A1
    • 2009-05-28
    • US12076357
    • 2008-03-17
    • Young-tae KimJung-ho KimSang-chul Ko
    • Young-tae KimJung-ho KimSang-chul Ko
    • H04R5/00
    • H04R3/12H04S2400/11
    • A method and apparatus for outputting a sound source signal by using a virtual speaker are provided. The method includes generating a virtual sound source signal delayed by a virtual delay value, instead of by the minimum delay value, according to a sampling rate of an input sound source signal, from the input sound source signal; generating a speaker output signal in which a sampling rate is changed based on the input sound source signal and the generated virtual sound source signal; and outputting the generated speaker output signal. Thus, a non-uniform radiation pattern, which causes distortion in a sound radiated from a speaker array, is removed and the limitation of a frequency band of a controllable sound source signal is overcome, thereby providing a stable sound.
    • 提供了一种通过使用虚拟扬声器输出声源信号的方法和装置。 该方法包括根据输入声源信号的采样率,根据输入声源信号产生延迟了虚拟延迟值而不是最小延迟值的虚拟声源信号; 产生基于所输入的声源信号和所生成的虚拟声源信号使采样率改变的扬声器输出信号; 并输出所生成的扬声器输出信号。 因此,消除了从扬声器阵列辐射的声音失真的不均匀辐射图,克服了可控声源信号的频带的限制,从而提供稳定的声音。
    • 10. 发明授权
    • Method and apparatus for outputting sound source signal by using virtual speaker
    • 使用虚拟扬声器输出声源信号的方法和装置
    • US08804969B2
    • 2014-08-12
    • US12076357
    • 2008-03-17
    • Young-tae KimJung-ho KimSang-chul Ko
    • Young-tae KimJung-ho KimSang-chul Ko
    • H04R5/00H04R5/02
    • H04R3/12H04S2400/11
    • A method and apparatus for outputting a sound source signal by using a virtual speaker are provided. The method includes generating a virtual sound source signal delayed by a virtual delay value, instead of by the minimum delay value, according to a sampling rate of an input sound source signal, from the input sound source signal; generating a speaker output signal in which a sampling rate is changed based on the input sound source signal and the generated virtual sound source signal; and outputting the generated speaker output signal. Thus, a non-uniform radiation pattern, which causes distortion in a sound radiated from a speaker array, is removed and the limitation of a frequency band of a controllable sound source signal is overcome, thereby providing a stable sound.
    • 提供了一种通过使用虚拟扬声器输出声源信号的方法和装置。 该方法包括根据输入声源信号的采样率,根据输入声源信号产生延迟了虚拟延迟值而不是最小延迟值的虚拟声源信号; 产生基于所输入的声源信号和所生成的虚拟声源信号使采样率改变的扬声器输出信号; 并输出所生成的扬声器输出信号。 因此,消除了从扬声器阵列辐射的声音失真的不均匀辐射图,克服了可控声源信号的频带的限制,从而提供稳定的声音。