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    • 1. 发明申请
    • Spherical Sound Source for Acoustic Measurements
    • 用于声学测量的球形声源
    • US20140029781A1
    • 2014-01-30
    • US13561210
    • 2012-07-30
    • Plamen Ivanov ValtchevDimitar Kirilov Dimitrov
    • Plamen Ivanov ValtchevDimitar Kirilov Dimitrov
    • H04R1/20H04R1/02
    • H04R1/323H04R1/227H04R1/26
    • Spherical sound source comprising two coaxial loudspeakers and two mid-high frequency compression drivers. Low frequencies are radiated by the two low-frequency sections of the coaxial loudspeakers. Mid-frequencies 500 Hz-2000 Hz are radiated by the two mid-high frequency compression drivers. High-frequencies 2 kHz-10 kHz are radiated in the horizontal plane by the same mid-high frequency arrangement together with two compression drivers of the coaxial loudspeakers in each vertical direction. Identical drivers form three pairs. One driver from each pair is enclosed in one of two symmetrically opposite half-embodiments, spaced at predetermined distance to create a common radially expanding horn for the two mid-high frequency compression drivers. All loudspeakers share the same vertical axis of rotational symmetry. The two half-embodiments might be used as separate standalone spherically radiating sources when installed on hard surface. The invention is appropriate for sine-swept acoustic measurements and sound isolation measurements in high sound transmission class buildings.
    • 球面声源包括两个同轴扬声器和两个中高频压缩驱动器。 低频由同轴扬声器的两个低频部分辐射。 中频500 Hz-2000 Hz由两个中高频压缩驱动器辐射。 高频2kHz-10kHz在水平面上以相同的中高频布置与同轴扬声器的两个压缩驱动器在每个垂直方向上辐射。 相同的司机形成三对。 每对中的一个驱动器被封闭在两个对称相对的半实施例中的一个中,以预定距离间隔开,以产生用于两个中高频压缩驱动器的共同的径向扩张的喇叭。 所有扬声器共享相同的旋转对称垂直轴。 当安装在硬表面上时,两个半实施例可以用作单独的独立球形辐射源。 本发明适用于高声传输级建筑物中的正弦扫描声学测量和声音隔离测量。
    • 2. 发明授权
    • Spherical sound source for acoustic measurements
    • 用于声学测量的球形声源
    • US08670585B2
    • 2014-03-11
    • US13561210
    • 2012-07-30
    • Plamen Ivanov ValtchevDimitar Kirilov Dimitrov
    • Plamen Ivanov ValtchevDimitar Kirilov Dimitrov
    • H04R25/00
    • H04R1/323H04R1/227H04R1/26
    • Spherical sound source comprising two coaxial loudspeakers and two mid-high frequency compression drivers. Low frequencies are radiated by the two low-frequency sections of the coaxial loudspeakers. Mid-frequencies 500 Hz-2000 Hz are radiated by the two mid-high frequency compression drivers. High-frequencies 2 kHz-10 kHz are radiated in the horizontal plane by the same mid-high frequency arrangement together with two compression drivers of the coaxial loudspeakers in each vertical direction. Identical drivers form three pairs. One driver from each pair is enclosed in one of two symmetrically opposite half-embodiments, spaced at predetermined distance to create a common radially expanding horn for the two mid-high frequency compression drivers. All loudspeakers share the same vertical axis of rotational symmetry. The two half-embodiments might be used as separate standalone spherically radiating sources when installed on hard surface. The invention is appropriate for sine-swept acoustic measurements and sound isolation measurements in high sound transmission class buildings.
    • 球面声源包括两个同轴扬声器和两个中高频压缩驱动器。 低频由同轴扬声器的两个低频部分辐射。 中频500 Hz-2000 Hz由两个中高频压缩驱动器辐射。 高频2kHz-10kHz在水平面上以相同的中高频布置与同轴扬声器的两个压缩驱动器在每个垂直方向上辐射。 相同的司机形成三对。 每对中的一个驱动器被封闭在两个对称相对的半实施例中的一个中,以预定距离间隔开,以产生用于两个中高频压缩驱动器的共同的径向扩张的喇叭。 所有扬声器共享相同的旋转对称垂直轴。 当安装在硬表面上时,两个半实施例可以用作单独的独立球形辐射源。 本发明适用于高声传输级建筑物中的正弦扫描声学测量和声音隔离测量。