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    • 3. 发明授权
    • Sound source search system
    • 声源搜索系统
    • US07379553B2
    • 2008-05-27
    • US10525908
    • 2003-08-27
    • Hirofumi NakajimaShinji OhashiHideo TsuruHiroshi OhyamaTakaaki Yamanaka
    • Hirofumi NakajimaShinji OhashiHideo TsuruHiroshi OhyamaTakaaki Yamanaka
    • H04R3/00
    • H04R3/005G01H3/125G01S3/8083H04R1/406H04R2201/401
    • It is possible to simultaneously identify the sound coming direction from a sound source in all directions and estimate the sound intensity of the sound source. A plurality of microphones (11) are arranged on the surface of a baffle (10) of a shape such as a sphere and polyhedron so that sound from all directions are acquired. A calculation device (40) calculates the amplitude characteristic and the phase characteristic of acoustic signals acquired by the microphones (11). The signal information and information on sound field analysis around the baffle are integrated and calculation to emphasize a sound coming from a particular direction is performed for all the directions so as to identify the sound coming direction from a sound source. According to these calculation results and the distance input by an input device (70), it is possible to estimate the sound intensity of the sound source at a plurality of portions generated at the sound source or boundary surface.
    • 可以从各个方向的声源同时识别来自声音的方向,并且估计声源的声音强度。 多个麦克风(11)布置在诸如球体和多面体的形状的挡板(10)的表面上,使得获得来自所有方向的声音。 计算装置(40)计算由麦克风(11)获取的声学信号的振幅特性和相位特性。 整合挡板周围的信号信息和声场分析信息,对所有方向进行强调来自特定方向的声音的计算,以便识别来自声源的声音进入方向。 根据这些计算结果和输入装置输入的距离(70),可以估计在声源或边界面处产生的多个部分处的声源的声音强度。
    • 5. 发明申请
    • NOISE IDENTIFYING APPARATUS AND NOISE IDENTIFYING METHOD USING THE SAME
    • 噪声识别装置和噪声识别方法
    • US20150208185A1
    • 2015-07-23
    • US14415473
    • 2013-07-11
    • NITTOBO ACOUSTIC ENGINEERING CO., LTD.
    • Hiroshi OhyamaTaichi HigashiokaKazuhiro TakashimaShinji OhashiYoshio Tadahira
    • H04R29/00
    • H04R29/00G01H3/00G10L21/028H04R29/005H04S7/303H04S2400/11
    • Provided is a noise identifying apparatus and noise identifying method, allowing automatic identification of whether or not a measured noise has been influenced by a non-object noise, using a simple system.Apparatus includes a sound detection unit, including plural microphones and/or particle velocity sensors; a sound source direction specifying unit, specifying an instantaneous direction of a sound source for each unit time, on the result of detection by the sound detection unit; a variation degree calculating unit, calculating a variation degree of the plural instantaneous directions specified by the sound source direction specifying unit for a prescribed period set longer than the unit time; and a non-object noise determining unit, determining the existence/absence of a non-object noise having influenced the measurement of an object noise taken as an object to be measured, coming from a noise source, on the variation degree calculated by the variation degree calculating unit.
    • 提供了一种噪声识别装置和噪声识别方法,允许使用简单的系统自动识别被测噪声是否受到非对象噪声的影响。 装置包括声音检测单元,包括多个麦克风和/或粒子速度传感器; 根据声音检测单元的检测结果,指定每单位时间的声源的瞬时方向的声源方向指定单元; 变化度计算单元,计算由声源方向指定单元指定的多个瞬时方向在比单位时间长的规定时间段的变化度; 以及非对象噪声判定单元,根据由变化量计算出的变化度,判定影响来自噪声源的被摄体作为测量对象噪声的测量的非对象噪声的存在/不存在 度计算单位。
    • 7. 发明授权
    • Reflector structure, sound field adjusting method, columnar reflector structure, room, program, and various acoustic room designing system
    • 反射器结构,声场调整方法,柱状反射器结构,房间,程序和各种声学室设计系统
    • US08396241B2
    • 2013-03-12
    • US12993496
    • 2009-05-21
    • Yasushi SatakeHideo TsuruKazuhiro MakinoShinji OhashiHiroshi Ohyama
    • Yasushi SatakeHideo TsuruKazuhiro MakinoShinji OhashiHiroshi Ohyama
    • H04R1/20
    • G10K11/28
    • There is provided a sound field adjusting method that can provide an acoustic improvement effect tailored to the characteristics of various acoustic rooms, with small differences in reflection properties between sound receiving points. The diameters of a plurality of columnar reflectors are calculated so as to diffuse sound waves of respective different frequency ranges. An arrangement condition is calculated so that the columnar reflectors having the calculated diameters form a plurality of reflecting surfaces that reflect the sound waves of different frequency ranges in random reflection directions, with random reflection time delays, or in random phases. The plurality of columnar reflectors having respective different diameters are then arranged under the arrangement condition. The arrangement condition is calculated to form a reflecting surface for a sound wave of a higher frequency range near a sound source, and form a reflecting surface for a sound wave of a lower frequency range far from the sound source. A sound absorbing structure by using the internal space of the arranged columnar reflectors provides effective countermeasures against low-range standing waves.
    • 提供了一种声场调整方法,其能够提供根据各种声学室的特征定制的声音改善效果,声音接收点之间的反射特性差异小。 计算多个柱状反射体的直径,以扩散各个不同频率范围的声波。 计算布置条件,使得具有计算的直径的柱状反射器形成多个反射面,其以随机反射时间延迟或随机相位反射随机反射方向上的不同频率范围的声波。 然后在布置条件下布置具有各自不同直径的多个柱状反射器。 计算排列条件以形成靠近声源的较高频率范围的声波的反射表面,并形成远离声源的较低频率范围的声波的反射表面。 通过使用排列的柱状反射器的内部空间来形成吸声结构,提供了针对低范围驻波的有效对策。
    • 9. 发明授权
    • Noise identifying apparatus and noise identifying method using the same
    • 噪声识别装置和使用其的噪声识别方法
    • US09392388B2
    • 2016-07-12
    • US14415473
    • 2013-07-11
    • NITTOBO ACOUSTIC ENGINEERING CO., LTD.
    • Hiroshi OhyamaTaichi HigashiokaKazuhiro TakashimaShinji OhashiYoshio Tadahira
    • H04R29/00H04S7/00G01H3/00G10L21/028
    • H04R29/00G01H3/00G10L21/028H04R29/005H04S7/303H04S2400/11
    • Provided is a noise identifying apparatus and noise identifying method, allowing automatic identification of whether or not a measured noise has been influenced by a non-object noise, using a simple system.Apparatus includes a sound detection unit, including plural microphones and/or particle velocity sensors; a sound source direction specifying unit, specifying an instantaneous direction of a sound source for each unit time, on the result of detection by the sound detection unit; a variation degree calculating unit, calculating a variation degree of the plural instantaneous directions specified by the sound source direction specifying unit for a prescribed period set longer than the unit time; and a non-object noise determining unit, determining the existence/absence of a non-object noise having influenced the measurement of an object noise taken as an object to be measured, coming from a noise source, on the variation degree calculated by the variation degree calculating unit.
    • 提供了一种噪声识别装置和噪声识别方法,允许使用简单的系统自动识别被测噪声是否受到非对象噪声的影响。 装置包括声音检测单元,包括多个麦克风和/或粒子速度传感器; 根据声音检测单元的检测结果,指定每单位时间的声源的瞬时方向的声源方向指定单元; 变化度计算单元,计算由声源方向指定单元指定的多个瞬时方向在比单位时间长的规定时间段的变化度; 以及非对象噪声判定单元,根据由变化量计算出的变化度,判定影响来自噪声源的被摄体作为测量对象噪声的测量的非对象噪声的存在/不存在 度计算单位。