An electronic device includes a cover body, a telephone receiver, a loudspeaker, and a first cavity. The telephone receiver is accommodated in the first cavity. There is a gap between the cover body and the telephone receiver as well as between the cover body and the loudspeaker. The gap is communicated with the first cavity, and is communicated with the external environment through a sound hole of the loudspeaker.

An earpiece includes an electro-acoustic transducer and a housing that supports the electro-acoustic transducer such that the housing and the electro-acoustic transducer together define a first acoustic volume and a second acoustic volume. The electro-acoustic transducer is arranged such that a first radiating surface of the transducer radiates acoustic energy into the first acoustic volume and a second radiating surface of the transducer radiates acoustic energy into the second acoustic volume. A mesh is disposed along an outlet of the housing and is arranged to inhibit debris from entering the front acoustic volume. A first microphone is supported in the housing. The first microphone includes a microphone port for sensing pressure. A chimney surrounds the microphone port and mechanically couples the first microphone to the mesh.

A loudspeaker parameter system for vented box driver excursion modeling, may include a loudspeaker driver having a conductor, a magnet and a diaphragm. The system may further include a processor for excursion modeling configured to receive an input signal, determine a voltage level of the input signal, an enclosure having a resonant port, estimate port parameters including at least one of an acoustic resistance or acoustic mass, and apply a voltage limit based on the vented box excursion model utilizing the port parameters.

An acoustically transparent protector for an audio device provided with a sound generating transducer having a sound port covered by said protector for use with a human ear for the reproduction of sound which allows sound to pass through with little attenuation or distortion but does not allow foreign material such as ear wax, dust, debris, or water to pass into the sound port. The protector of the invention is provided with a sound radiating element having at least a curve portion and a suspension part. The protector of the invention realizes a “perfect” barrier that attenuates the sound entering the audio device as little as possible and does not suffer from significant sound distortions.

Various implementations include wearable audio devices with counter-bore port features for maintaining a cover on the port. In certain cases, the wearable audio device includes a port that is integrated into the device frame and acoustically couples one or more acoustic cavities to a distinct volume. The device frame has a counter-bore feature proximate to the port for positioning a metal mesh.

The present invention provides a duct structure of an earphone speaker unit comprising: a diaphragm; a speaker module located at a back of the diaphragm, comprising an acoustic coil, a magnet, and a yoke, and generating sound of the diaphragm, and a frame member surrounding the yoke, wherein the frame member forms a donut-shaped duct space along circumference of the yoke, and wherein the frame member comprises: an inflow hole formed to enable sound generated from the speaker module to flow into the duct space; an outflow hole formed to enable sound inside the duct space to flow out to the outside; a partition wall blocking a path of sound in a vertical direction inside the duct space; a tuning hole formed to penetrate through the partition wall; and a mesh member installed to block the tuning hole, thereby enabling acoustic tuning.

A balanced armature receiver includes a gas permeable barrier located on a portion of the receiver defining a back volume to provide barometric relief. The barrier can be located in a wall portion or diaphragm of the receiver to vent the back volume to an exterior of the receiver directly, via a front volume, or via a nozzle. The gas permeable barrier is impermeable to liquid infiltration and can be configured to influence the low frequency response of the receiver.

An acoustic device is described that comprises an acoustic channel extending through its housing and an acoustic valve disposed in the acoustic channel. The acoustic valve is configured to determine a passage of sound through the housing via the acoustic channel. The acoustic valve comprises a deformable shape forming a deformable perimeter of the acoustic channel, and an actuating mechanism configured to exert an actuating force deforming the deformable shape causing the deformable perimeter to move and change the passage of sound.

The present invention provides a duct structure of an earphone speaker unit comprising: a diaphragm; a speaker module located at a back of the diaphragm, comprising an acoustic coil, a magnet, and a yoke, and generating sound of the diaphragm, and a frame member surrounding the yoke, wherein the frame member forms a donut-shaped duct space along circumference of the yoke, and wherein the frame member comprises: an inflow hole formed to enable sound generated from the speaker module to flow into the duct space; an outflow hole formed to enable sound inside the duct space to flow out to the outside; a partition wall blocking a path of sound in a vertical direction inside the duct space; a tuning hole formed to penetrate through the partition wall; and a mesh member installed to block the tuning hole, thereby enabling acoustic tuning.

A loudspeaker parameter system for vented box driver excursion modeling, may include a loudspeaker driver having a conductor, a magnet and a diaphragm. The system may further include a processor for excursion modeling configured to receive an input signal, determine a voltage level of the input signal, an enclosure having a resonant port, estimate port parameters including at least one of an acoustic resistance or acoustic mass, and apply a voltage limit based on the vented box excursion model utilizing the port parameters.