An electronic device includes a microphone module and a printed circuit board on which the microphone module is disposed. The printed circuit board includes a first layer having at least one first microphone pad coupled to the microphone module, a first ground spaced apart from the first microphone pad, and a second microphone pad coupled to the microphone module and connected to the first ground; and a second layer disposed under the first layer and having a second ground opposite to the first microphone pad and at least a part of the first ground.

A microphone includes a base, at least one sound receiving element, and a flexible circuit board. The base has a plurality of supporting portions, a plurality of damping portions, and a bearing portion. The plurality of supporting portions are spaced apart from each other. Each of the plurality of damping portions is disposed on an inner surface of the corresponding supporting portion. The bearing portion is connected to the plurality of damping portions and is suspended between the plurality of supporting portions. The at least one sound receiving element is disposed on the base. The flexible circuit board is disposed on the base and has a first transmission segment. The first transmission segment is electrically coupled to the at least one sound receiving element, and the first transmission segment has a plurality of bending sections.

The present disclosure relates to an apparatus for cancelling a noise signal for speech recognition, the apparatus includes one or more microphones configured on a mesh enclosure to receive a first set of signals pertaining to a user command. A speaker located in the mesh enclosure configured to generate a second set of signals pertaining to noise signal, wherein each of the one or more microphones are arranged perpendicular above the speaker at predefined degrees to cancel the generated second set of signals reaching the one or more microphones. A processor configured to process the received first set of signals by cancellation of the second set of signals; and enable, on receipt of the first set of signals, an operational mode of the apparatus to execute corresponding action.

One of the main objects of the present invention is to provide a vibration sensor with improved sensitivity. To achieve the above-mentioned objects, the present invention provides a vibration sensor including a circuit board assembly including an installation slot; a housing fixed to the circuit board assembly for forming an accommodation space cooperatively with the circuit board assembly; and a diaphragm assembly accommodated in the accommodation space and secured to the circuit board assembly. The diaphragm assembly includes a gasket fixed to the circuit board assembly, and a first diaphragm fixed to a side of the gasket away from the circuit board assembly.

A MicroElectroMechanical Structure (MEMS) accelerometer includes a piezoelectric membrane including at least one electrode and an inertial mass, the piezoelectric membrane being affixed to a holder; and a circuit for evaluating sums and differences of signals associated with the at least one electrode to determine a three-dimensional acceleration direction, wherein the at least one electrode includes a segmented electrode, and wherein the segmented electrode includes four segmentation zones.

The present disclosure presents a patient respiratory mask that is configured to pick up patient speech from within the patient respiratory mask utilizing a microphone and to transmit that speech to a speaker or other communications device and a method of patient communication utilizing the same.

A microelectromechanical system microphone includes a piezoelectric diaphragm, upper inner electrodes and upper outer electrodes disposed on an upper surface of the diaphragm, and lower inner electrodes and lower outer electrodes disposed on a lower surface of the diaphragm. The diaphragm is divided into a plurality of sectors, a first of the sectors including an inner and an outer upper electrode physically disconnected from an inner and an outer upper electrode on a second sector adjacent to the first sector, and an inner and an outer lower electrode physically disconnected from an inner and an outer lower electrode on the second sector. A first via extends between and electrically couples the upper and lower inner electrodes of the first sector and a first bond pad. A second via extends between and electrically couples the upper and lower outer electrodes of the second sector and a second bond pad.

The piezoelectric microphone chip includes a single thin plate, a diaphragm support structure that is provided on one surface of the thin plate and includes an outer edge support portion that supports an outer edge of the thin plate and a separation support portion that separates the thin plate into a plurality of diaphragms in association with the outer edge support portion, a single or a plurality of piezoelectric conversion portions formed by laminating a first electrode, a piezoelectric film, and a second electrode sequentially from a diaphragm side on each of the diaphragms, and a signal detection circuit that detects outputs from the piezoelectric conversion portions provided on the plurality of diaphragms, and a relationship among a thickness t.sub.1 of the outer edge support portion, a thickness t.sub.2 of the separation support portion, and a thickness td of the thin plate 10 is set to 13.3×td<t.sub.2<t.sub.1−20 μm.

The present invention discloses an advance attachment for noise abatement microphone. The assembly proposes a square shaped cavity to receive the microphone assembly where the outer shape is curved. The novel feature of assembly lies in its ease of use, portability and is universal in nature.

There is described a switchable microphone device which may be switched between a digital output mode and an analog output mode. There is further described a system for use of such a device, which allows for the switching between analog and digital computing modes.