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mems speaker with position sensor

A sensor and speaker technology, applied in the direction of electrostatic transducer speakers, sensors, microphones, etc., can solve problems affecting system performance, and achieve the effects of avoiding premature wear, improving life, and requiring less additional space

Active Publication Date: 2020-11-03
USOUND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, small knocks or other environmental influences can already negatively affect the performance of the system

Method used

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  • mems speaker with position sensor
  • mems speaker with position sensor
  • mems speaker with position sensor

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Embodiment Construction

[0037] In the following description of the drawings, in order to define the relationship between the respective elements, for example, above, below, above, below, above, below, Relative terms like left, right, vertical, and horizontal. It is self-evident that these terms may vary from where devices and / or elements are positioned differently than shown in the figures. Thus, for example, when referring to the reverse orientation of devices and / or elements as shown in the figures, features which were stated to be above in the following description of the figures would now be arranged below. The relative terms used are thus used only to briefly describe the relative relationship between the various devices and / or elements described below.

[0038] figure 1 A first embodiment of a MEMS speaker 1 is shown. The MEMS speaker 1 is configured to generate sound waves in the audible wavelength spectrum. For this purpose, MEMS loudspeaker 1 has a membrane 2 and a membrane carrier 3 . ...

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PUM

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Abstract

The invention relates to a MEMS loudspeaker (1) for generating sound waves in the audible wavelength spectrum, comprising: a circuit board (10); a diaphragm (2) deflectable relative to the circuit board (10) along the z-axis at least one piezoelectric actuator (7) for deflecting the diaphragm (2); and an electronic control unit (11), especially an ASIC (40), fully embedded in the circuit board (10) for Energize the actuator (7). According to the invention, the MEMS loudspeaker (1) has at least one position sensor (19), by means of which position sensor (19) a sensor signal dependent on the diaphragm deflection can be supplied to the control unit (11). The control unit is configured as Actuates the actuator in a controlled manner based on a control signal.

Description

technical field [0001] The invention relates to a MEMS loudspeaker for generating sound waves in the audible wavelength spectrum, having: a circuit board; a diaphragm capable of being displaced relative to the circuit board along the z-axis; at least one piezoelectric actuator for an offset diaphragm; and an electronic control unit, in particular an ASIC, fully embedded in the circuit board, which is used to actuate the actuator. Background technique [0002] The term MEMS stands for microelectromechanical system. Such systems are installed in particular in electronic devices which offer only a small amount of installation space. The performance of known MEMS speakers mostly depends on ideal environmental conditions. Here, already small knocks or other environmental influences can negatively affect the performance of the system. Today's requirements for such MEMS loudspeakers, however, are an at least unchanged sound quality even in the event of external influences. Con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/06
CPCH04R9/06H04R3/007H04R19/005H04R2201/003H04R17/00H04R19/02H10N30/101H04R3/002H04R3/00H04R29/001
Inventor 安德里亚·韦斯高尼·克莱里西·贝尔特拉米费鲁乔·博托尼
Owner USOUND