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    • 6. 发明申请
    • SPATIAL SOUND STEERING SYSTEM
    • 空间声转向系统
    • WO01074117A1
    • 2001-10-04
    • PCT/US2000/007843
    • 2000-03-24
    • H04N5/225G01S3/801G01S3/802H04N5/232H04N7/15H04R1/32H04R1/34H04R3/00H04S1/00G01S3/80
    • G01S3/802H04R1/34
    • An apparatus and method for determining directionality of acoustic signals arriving from an acoustic source is disclosed. A plurality of reflectors for modifying the acoustic signals and a transducer located proximate to the reflectors is used. A notch detector detects and identifies spectral notches in the modified acoustic signals. A device then determines the direction of the acoustic source. In one embodiment, a microphone system capable of detecting three-dimensional sound is provided. The microphone system comprises an elliptical-shaped microphone enhancer having at least two reflectors located different distances apart from a microphone located in the center of the ellipse. The reflectors have asymmetric ridges which cause interference patterns in the signals received by the microphone, conceptually analogous to the patterns generated by the pinnae of the human ear.
    • 公开了一种用于确定从声源到达的声信号的方向性的装置和方法。 使用用于修改声信号的多个反射器和位于反射器附近的换能器。 陷波检测器检测并识别修改的声信号中的频谱缺口。 然后,设备确定声源的方向。 在一个实施例中,提供了能够检测三维声音的麦克风系统。 麦克风系统包括椭圆形麦克风增强器,其具有与位于椭圆中心的麦克风不同的距离的至少两个反射器。 反射器具有不对称的脊,其在由麦克风接收的信号中引起干涉图案,在概念上类似于由人耳的猿类产生的图案。