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    • 5. 发明授权
    • Piezoelectric film sonic emitter
    • 压电薄膜声发射体
    • US06606389B1
    • 2003-08-12
    • US09388787
    • 1999-09-02
    • Alan Robert SelfridgePierre Khuri-Yakub
    • Alan Robert SelfridgePierre Khuri-Yakub
    • H04B300
    • G10K15/02H04R17/00H04R2217/03
    • A speaker device for emitting subsonic, sonic or ultrasonic compression waves comprising a a rigid emitter plate attached to the drum, and a plurality of apertures formed within the plate which are covered by a thin piezoelectric film disposed across the emitter plate. The thin film at the apertures distends into an arcuate emitter configuration capable of constricting and extending in response to variations in the applied electrical input at the piezoelectric film to thereby create a compression wave in a surrounding environment. Parametric ultrasonic frequency input is supplied to the piezoelectric film to propagate multiple ultrasonic frequencies having a difference component corresponding to the desired subsonic, sonic or ultrasonic frequency range.
    • 一种用于发射亚音速,声波或超声压缩波的扬声器装置,包括附接到滚筒的刚性发射器板,以及形成在该板内的多个孔,该多个孔由设置在发射极板上的薄压电薄膜覆盖。 孔处的薄膜扩张成能够响应于压电薄膜上施加的电输入的变化而收缩和延伸的弓形发射器配置,从而在周围环境中产生压缩波。 将参数超声波频率输入提供给压电膜,以传播具有对应于期望的亚音速,声波或超声波频率范围的差分分量的多个超声波频率。
    • 6. 发明授权
    • Piezoelectric film sonic emitter
    • 压电薄膜声发射体
    • US07376236B1
    • 2008-05-20
    • US09478114
    • 2000-01-04
    • Joseph O. NorrisJames J. Croft, IIIAlan Robert SelfridgePierre Khuri-Yakub
    • Joseph O. NorrisJames J. Croft, IIIAlan Robert SelfridgePierre Khuri-Yakub
    • H04R3/00
    • H04R17/00
    • A speaker device for emitting subsonic, sonic or ultrasonic compression waves comprising a generally hollow drum, a rigid emitter plate attached to the drum, and a plurality of apertures formed within the plate which are covered by a thin piezoelectric film disposed across the emitter plate. A pressure source is coupled to the drum for developing a biasing pressure with respect to the thin film at the apertures to distend the film into an arcuate emitter configuration capable of constricting and extending in response to variations in the applied electrical input at the piezoelectric film to thereby create a compression wave in a surrounding environment. Parametric ultrasonic frequency input is supplied to the piezoelectric film to propagate multiple ultrasonic frequencies having a difference component corresponding to the desired subsonic, sonic or ultrasonic frequency range.
    • 一种用于发射亚音速,声波或超声波压缩波的扬声器装置,其包括大致中空的鼓,附接到滚筒的刚性发射器板以及形成在该板内的多个孔,该多个孔由设置在发射极板上的薄压电薄膜覆盖。 压力源耦合到滚筒,用于相对于孔处的薄膜产生偏置压力,以将薄膜扩展成弓形发射器配置,其能够响应于在压电薄膜上施加的电输入的变化而收缩和延伸, 从而在周围环境中产生压缩波。 将参数超声波频率输入提供给压电膜,以传播具有对应于期望的亚音速,声波或超声波频率范围的差分分量的多个超声波频率。