The present disclosure provides a speaker, which includes a frame having receiving space, a magnetic circuit system and a vibration system received in the receiving space. The vibration system includes a diaphragm and a voice coil, the magnetic circuit system includes a lower plate fixed to the frame, a primary magnet fixed on the lower plate, two secondary magnets disposed on both sides of the primary magnet, and an upper plate disposed on the secondary magnet, the upper plate includes a first surface facing towards the diaphragm, a second surface distal from the diaphragm, a fixing groove recessed from the second surface towards the first surface and a fixing hole. The fixing groove includes a bottom surface distal from the second surface. The fixing hole extends from the bottom surface to the first surface. The frame being injection-molded is filled in the fixing groove and the fixing hole.

The present disclosure provides a micro sound device. The micro sound device includes a basket having an accommodating space, a vibration system secured to the basket, and a magnetic circuit system accommodated in the basket and configured to drive the vibration system to vibrate and produce sound. The vibration system includes an upper diaphragm secured to the basket, a voice coil located below the upper diaphragm and configured to drive the upper diaphragm to vibrate and produce sound, and a support apparatus elastically supporting the voice coil. The support apparatus is disposed opposite to the upper diaphragm and separately from the upper diaphragm. The magnetic circuit system includes an upper clamping plate secured to the basket. One end of the support apparatus is fixed to one side of the upper clamping plate and the other end of the support apparatus is fixed to the voice coil.

The present disclosure provides a speaker which includes a frame, and a vibration system and a magnetic circuit system that are accommodated in the frame, where the magnetic circuit system is configured to drive the vibration system to vibrate and produce sound. The vibration system includes a diaphragm for vibrating and producing sound and a voice coil for driving the diaphragm to vibrate, and the magnetic circuit system includes a yoke fixedly connected to one end of the frame away from the diaphragm and a magnet assembled on the yoke. The vibration system further includes an iron core for driving the diaphragm to vibrate, and the voice coil is wound around the iron core. Compared with a related technology, the speaker provided in the present disclosure has a better acoustic effect.

The purpose of the present invention is to provide a glass sheet composite having satisfactory acoustic performance. The present invention relates to a glass sheet composite including a diaphragm that is vibrated by a vibrator, and a support member that is attached along an edge portion of the diaphragm to support the diaphragm, in which the diaphragm includes at least one glass sheet, and is supported on the support member through a fixing part that fixes the edge portion of the diaphragm to the support member, and a vibration-permitting part that permits vibration of the diaphragm.

In at least one embodiment, a dual asymmetric compression driver is provided. The dual asymmetric compression driver includes a first driver assembly and a second driver assembly. The first driver assembly is positioned about a central axis and includes a first annular diaphragm having a first planar section extending at a first clamping distance. The second driver assembly is positioned about the central axis and includes a second annular diaphragm having a second planar section extending at a second clamping distance. The first clamping distance is different from the second clamping distance causing the first asymmetric driver to provide a first audio output in a first frequency range and the second driver assembly to provide a second audio output in a second frequency range.

In at least one embodiment, a dual asymmetric compression driver is provided. The dual asymmetric compression driver includes a first driver assembly and a second driver assembly. The first driver assembly is positioned about a central axis and includes a first annular diaphragm having a first planar section extending at a first clamping distance. The second driver assembly is positioned about the central axis and includes a second annular diaphragm having a second planar section extending at a second clamping distance. The first clamping distance is different from the second clamping distance causing the first asymmetric driver to provide a first audio output in a first frequency range and the second driver assembly to provide a second audio output in a second frequency range.

The present invention provides a sound generator, including: a vibration system including a diaphragm and a voice coil; a frame with an accommodation space, including an upper surface, a lower surface, and an inner wall; and a magnetic circuit system including a magnetic yoke and a side plate bending and extending from the bottom plate. The side plate is fixed on the inner wall, the bottom plate covers the lower surface and encloses the accommodation space. The lower surface obliquely extends in a direction close to the upper surface and forms an extension surface. The extension surface extends to an edge of the frame, one end of the extension close to the edge of the bottom plate is spaced apart from the bottom plate for forming a leakage channel communicating with the accommodation space and an outside of the speaker box.

The present invention relates to a fixed-fixed membrane for a microelectromechanical system (MEMS) microphone. In one embodiment, a MEMS acoustic sensor includes a substrate; a membrane situated parallel to the substrate; and at least one vent formed into the membrane, wherein the at least one vent is a curved opening in the membrane, and wherein the at least one vent is disposed substantially along a length of the membrane.

A microfabricated structure includes a perforated stator; a first isolation layer on a first surface of the perforated stator; a second isolation layer on a second surface of the perforated stator; a first membrane on the first isolation layer; a second membrane on the second isolation layer; and a pillar coupled between the first membrane and the second membrane, wherein the first isolation layer includes a first tapered edge portion having a common surface with the first membrane, wherein the second isolation layer includes a first tapered edge portion having a common surface with the second membrane, and wherein an endpoint of the first tapered edge portion of the first isolation layer is laterally offset with respect to an endpoint of the first tapered edge portion of the second isolation layer.

An unistructurally formed acoustic speaker cone unit includes (a) a suspension ring with at least one continuous loop rib; (b) a central dome-shaped cone with thin, arcuate pie-shaped segments which radiate outwardly, and with a plurality of arc ribs; and (c) a main diaphragm having a plurality of segments radiating outwardly and extending to the suspension ring. Each main diaphragm segment has an arcuate cross-section, thereby creating a concave side and a convex side. The central cone segments are preferably equal in number to the diaphragm segments and are in alignment therewith.