Directional microphone, especially with symmetrical direction carousing king

• 1. 用于可旋转的并且通过振动激励可沿其旋转轴线的方向移动的辊子,尤其是机架辊的轴承结构及用于控制这种辊子的运行方式的方法 [P] . 中国专利： CN102203441A . 2011-09-28
• 2. 具有能够使两个旋转轴对称旋转和相同方向旋转的交叉搅拌叶片的搅拌机及搅拌方法 [P] . 中国专利： CN109070031B . 2021.08.20
• 3. Directional microphone with symmetrical directional effect [P] . 德国专利： DE19706074C1 . 1998-06-25

  机译： 具有对称指向效果的指向性麦克风

• 4. Control appts. for directional microphone signals - produces virtual directional characteristics with adjustable main receiving direction and degree of bunching [P] . 德国专利： DE4101933A1 . 1992-07-23

  机译： 控制应用程序。用于定向麦克风信号-产生虚拟定向特性，可调整主接收方向和成束度

• 5. Directional microphone, in particular having symmetrical directivity [P] . 美国专利： US6418229B1 . 2002-07-09

  机译： 定向麦克风，特别是具有对称方向性

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