A microelectromechanical systems (MEMS) microphone and form-factor adapter can include an adapter housing including an opening and an outer acoustic port and can include a MEMS microphone disposed at least partially within the adapter housing. The MEMS microphone can include a microphone housing, a MEMS motor disposed in the microphone housing and acoustically coupled to the outer acoustic port of the adapter housing via an acoustic port of the microphone housing, and an electrical circuit disposed in the microphone housing and electrically coupled to the MEMS motor and to electrical contacts on an exterior of the microphone housing. The electrical contacts can be physically accessible through the opening of the adapter housing. The adapter housing can change a form-factor of the MEMS microphone.

The present disclosure provides a vibration sensor. The vibration sensor may include a vibration receiver and an acoustic transducer. The vibration receiver may include a housing, a limiter and a vibration unit. The housing and the acoustic transducer may form an acoustic cavity. The vibration unit may be located in the acoustic cavity to separate the acoustic cavity into a first acoustic cavity and a second acoustic cavity. The acoustic transducer may be acoustically connected to the first acoustic cavity. The housing may be configured to generate a vibration based on an external vibration signal. The vibration unit may change an acoustic pressure within the first acoustic cavity in response to the vibration of the housing, such that the acoustic transducer generates an electrical signal. The vibration unit may include a mass element and an elastic element. A first side of the elastic element may be connected around a side wall of the mass element. A second side of the elastic element may be connected with the limiter.

A MEMS microphone includes a substrate having a cavity, a back plate disposed over the substrate to cover the cavity and having a plurality of acoustic holes, a diaphragm disposed over the substrate to cover the cavity, the diaphragm being disposed under the back plate, including a venting hole communicating with the cavity, and sensing an acoustic pressure to create a displacement, and a first insulation layer interposed between the substrate and the diaphragm to support an end portion of the diaphragm to separate the diaphragm from the substrate, and the first insulation layer having an opening formed at a position corresponding to the cavity to expose the diaphragm. Thus, since the process of forming an anchor may be omitted, the process may be simplified, and process time may be shortened.

Embodiments disclosed in the present disclosure relate to vibration transducers. Such a transducer includes an electromagnet having a conductive coil. The conductive coil is configured to be driven by an electrical input signal to generate magnetic fields. The transducer further includes a magnetic diaphragm that is configured to mechanically vibrate in response to the generated magnetic fields. Additionally, the transducer includes a pair of cantilevered arms formed from damping steel. The cantilevered arms couple the magnetic diaphragm to a frame. The magnetic diaphragm vibrates with respect to the frame when the electromagnet is driven by the electrical input signal. Additionally, the pair of flexible support arms are connected to opposing sides of the magnetic diaphragm.

Some embodiments of the present invention disclose a miniature sounder. The miniature sounder includes a frame, and a vibration system and a magnetic system that are fixedly connected to the frame; the magnetic system includes a lower clamping board, a primary magnet that disposed on the lower clamping board, a cushion that disposed on the lower clamping board and surrounding the primary magnet and a secondary magnet that disposed on the cushion and surrounding the primary magnet, the cushion being disposed between the secondary magnet and the lower clamping board; and the vibration system includes a voice diaphragm, a voice coil that disposed below the voice diaphragm and causing the voice diaphragm to vibrate and generate a sound and a vibration diaphragm elastically supporting the voice coil, the vibration diaphragm comprising a corrugated rim portion, a fixing portion and a connecting portion.

A microphone includes an acoustic element including an acoustic hole; a case disposed below the acoustic element and including an acoustic inlet formed in a position corresponding to the acoustic hole; and a plurality of through holes formed between the acoustic element and the case and formed in a position corresponding to the acoustic hole.

To enable an output sound of a speaker unit to be output as a surface sound source in a limited space. A three-dimensional knitted fabric is provided at a position substantially facing speaker units while being given tension in a surface direction. Since the tension is applied, a pair of ground knitted fabrics constituting the three-dimensional knitted fabric and a connecting yarn extending back and forth between the ground knitted fabrics vibrate due to their elastic action. In particular, string vibration is generated in the connecting yarn. Due to this vibration, output sounds of the speaker units are propagated in the surface direction of the three-dimensional knitted fabric, and as a result, the three-dimensional knitted fabric propagates and radiates acoustic waves of a surface sound source.

The present disclosure relates to a waterproof open earphone. The waterproof open earphone may include a housing, at least one button, at least one elastic pad, and at least one pair of speaker units. The housing may be placed on a head or at least one ear of a user while not blocking an ear canal of the user. The at least one button may be set on the housing, wherein each of the at least one button corresponds to a button hole. The at least one elastic pad may correspond to the at least one button, respectively, wherein each elastic pad prevents the corresponding button from moving relative to the button hole. Each pair of the at least one pair of speaker units may generate sound within a frequency range from two sound guiding holes through two sound guiding tubes.

The present invention discloses portable sound equipment, and particularly relates to multifunctional portable sound equipment which comprises an equipment body, wherein the equipment body is mainly composed of a box body and a box cover capable of being folded and unfolded; a heat preservation cavity is arranged in the box body; and a sealing cover of the box cover is connected to an opening of the heat preservation cavity. The present invention solves a technical problem to enable the portable sound equipment to have multiple functions, has the functions of three categories of the sound system, the heat preservation box and the dining table as well as some other auxiliary functions, and well integrates the above functions into the portable sound equipment.

The present disclosure relates to an acoustic output device. The acoustic output device may include an earphone core, a controller, a power source, and a flexible circuit board. The earphone core may include at least one low-frequency acoustic driver configured to output sounds from at least two first guiding holes and the at least one high-frequency acoustic driver configured to output sounds from at least two second guiding holes. The controller may be configured to direct the at least one low-frequency acoustic driver to output the sounds in a first frequency range and direct the at least one high-frequency acoustic driver to output the sounds in a second frequency range. The power source may be configured to provide power supply for the earphone core. The flexible circuit board may be configured to connect the earphone core with the power source.