公开(公告)号：US07465869B1

公开(公告)日：2008-12-16

申请号：US11358977

申请日：2006-02-21

申请人： Paul John Freitas

发明人： Paul John Freitas

IPC分类号： G10H3/00

CPC分类号： G10H3/10 ,  G10H3/12

摘要： Membranes for use with capacitive electric musical instrument vibration transducers comprise an acoustically vibrating surface, a vibrating variable capacitor plate made from an electrically conductive material, and means of electrically connecting said vibrating variable capacitor plate to the electric circuitry of a capacitive electric musical instrument vibration transducer. These membranes can be used as drumheads, banjo membranes, and other stretched vibrating surfaces on similar musical instruments. In addition to generating the sound associated with these instruments, these membranes help capacitive electric musical instrument vibration transducers generate a signal describing the emitted sound of the musical instruments they are attached to.

摘要翻译： 用于电容式电乐器振动换能器的膜包括声振表面，由导电材料制成的振动可变电容器板，以及将所述振动可变电容器板电连接到电容式电乐器振动传感器的电路的装置 。 这些膜可用作类似乐器上的鼓头，班卓琴和其他拉伸的振动表面。 除了产生与这些仪器相关的声音之外，这些膜帮助电容式电乐器振动传感器产生描述所附乐器的发出声音的信号。

公开(公告)号：US07408109B1

公开(公告)日：2008-08-05

申请号：US11354495

申请日：2006-02-15

申请人： Paul John Freitas

发明人： Paul John Freitas

IPC分类号： G10H3/00

CPC分类号： G10H3/10 ,  G10H3/12

摘要： A capacitive electric musical instrument vibration transducer contains one or more parallel plate variable capacitors. Each variable capacitor contains one vibrating variable capacitor plate, an electrically conducting surface that comprises, covers, or is embedded within an acoustically emitting vibrating surface on a musical instrument (such as a drumhead or soundboard), and one fixed variable capacitor plate comprising a rigid electrically conducting surface held a fixed distance away. When the instrument is played, the vibrating surface causes vibrations directly (without using airborne sound as an intermediary) in the vibrating variable capacitor plates, thus causing time-varying voltage oscillations in the parallel plate variable capacitors reflecting the vibrational state, and therefore the sound, of the instrument. An electric circuit in the transducer converts these voltage oscillations into the same kinds of signals produced by microphones and magnetic pickups.

摘要翻译： 电容式电乐器振动传感器包含一个或多个平行板式可变电容器。 每个可变电容器包含一个振动可变电容器板，包括，覆盖或嵌入在乐器（例如鼓头或音板）上的声发射振动表面内的导电表面，以及包括刚性的一个固定可变电容器板 导电表面保持固定的距离。 当乐器演奏时，振动表面在振动可变电容器板中直接引起振动（不使用空中声音），从而引起反映振动状态的平行板可变电容器中的时变电压振荡，因此声音 的仪器。 换能器中的电路将这些电压振荡转换成由麦克风和磁性拾音器产生的相同种类的信号。