Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.

An apparatus includes a surface arranged to be mechanically displaced, a first magnet coupled with the surface, at least one supporting member for supporting the surface, a base comprising a second magnet, wherein the second magnet is arranged, at least partially, to face the first magnet, a coil coupled with the second magnet, and a signal port electrically coupled with the coil. An electrical signal is configured to travel between the signal port and the coil, and the electrical signal in the coil is proportional to mechanic displacement of the surface when a force equilibrium state of the surface is broken either by the electrical signal in the coil or the mechanic displacement of the surface from a position of the force equilibrium state.

A suspension component may be used within a system for isolating vibrations produced by an electrical component. A body of the suspension component may be formed from a single piece of planar material. A suspension component includes a plurality of flexures. The plurality of flexures includes a first set of flexures configured to suspend a first sub-assembly of a transducer from support brackets, a second set of flexures configured to suspend a second sub-assembly of the transducer from the first sub-assembly, and a third set of flexures configured to suspend the second sub-assembly from the support brackets.

An electronic device is provided, including a display screen; actuators configured to drive the display screen to vibrate; and a controller configured to control at least one of the actuators to operate and drive the display screen to produce a sound through vibration.

Provided is a sounding device, including frame and vibration system and magnetic circuit unit fixed to the frame. The vibration system includes diaphragm, voice coil driving the diaphragm to vibrate and sound, holder fixed to diaphragm, and auxiliary diaphragm spaced from diaphragm. The holder includes holder main body, first connection portion formed from holder main body to magnetic circuit unit and second connection portion spaced from first connection portion. The voice coil is fixed to second connection portion. One end of the auxiliary diaphragm is fixed to frame. One end of first connection portion away from holder main body bends and extends away from second connection portion to form flange. One end of auxiliary diaphragm away from frame is fixed to flange. The sounding device may reduce accuracy deviation and hidden dangers of gluing failure caused by rear assembling of the auxiliary diaphragm.

Electroacoustic drivers that can be utilized in loudspeaker systems that utilize drivers having a magnetic negative spring (MNS) (such as reluctance assist drivers (RAD) and permanent magnet crown (PMC) drivers). The electroacoustic drivers can be used at all audio frequencies, including subwoofer frequencies. The magnetic negative springs of the electroacoustic drivers can cancel, or partially cancel, the large pressure forces on a sound panel (of an audio speaker) so that substantial subwoofer notes can be efficiently and cost effectively produced in small/portable speakers. The electroacoustic drivers can include a stabilizing/centering mechanism to overcome the destabilizing forces of a MNS that are too large for a voice coil alone to produce.

A transducer system isolates vibrations produced by a transducer. The transducer system comprises the transducer and a vibration isolation system. The transducer can produce vibrations and is configured to be coupled to a device. The transducer includes a first sub-assembly including a coil assembly and a second sub-assembly including one or more magnets. The vibration isolation system is configured to isolate vibrations produced by the transducer from the device. The vibration isolation system includes a plurality of support brackets, and a suspension component including a plurality of flexures. The plurality of flexures includes a first set of flexures configured to suspend the first sub-assembly from the support brackets, a second set of flexures configured to suspend the second sub-assembly from the first sub-assembly, and a third set of flexures configured to suspend the second sub-assembly from the support brackets.

A speaker unit includes a speaker frame and two opposing membranes each being arranged to move up and down along a main speaker axis (A). Two drive units are present for each membrane, having a driver static part and a driver moving part. A sealing edge suspension is connected to a perimeter of the associated membrane and to the major front surface and major back surface of the speaker unit, respectively. For each driver moving part, a spider arm suspension is present for suspending the driver moving part to the speaker frame in a flexible manner. The sealing edge suspension is at least partially positioned above the associated drive units when viewed in a direction parallel to the main speaker axis (A).

The present disclosure provides multi-functional sound producing apparatus, including housing defining receiving cavity and sound producing device. The sound producing device includes vibration system and magnetic circuit unit driving vibration system to vibrate along first direction. The magnetic circuit unit includes main magnet assembly and auxiliary magnet. The apparatus further includes motor device which includes elastic member fixedly connected to housing, weight connected to elastic member, magnet component fixed to weight and vibrating along second direction with weight, and driving member fixed to bottom wall to drive magnet component to vibrate. Two groups of magnet component and driving member are provided, each of two opposite sides of main magnet assembly is provided with one group of magnet component and driving member, and second direction is perpendicular to first direction. The present disclosure has advantages of simple assembly, more saved overall space, low costs.

The present disclosure provides multi-functional sound producing apparatus, including housing defining receiving cavity and sound producing device. The sound producing device includes vibration system and magnetic circuit unit driving vibration system to vibrate along first direction. The magnetic circuit unit includes main magnet assembly and auxiliary magnet. The apparatus further includes motor device which includes elastic member fixedly connected to housing, weight connected to elastic member, magnet component fixed to weight and vibrating along second direction with weight, and driving member fixed to bottom wall to drive magnet component to vibrate. Two groups of magnet component and driving member are provided, each of two opposite sides of main magnet assembly is provided with one group of magnet component and driving member, and second direction is perpendicular to first direction. The present disclosure has advantages of simple assembly, more saved overall space, low costs.