A loudspeaker module and an electronic apparatus are disclosed, the loudspeaker module comprises a housing, a loudspeaker unit and a barrier rib body; the loudspeaker unit is provided in an inner cavity of the housing and divides the inner cavity of the housing into a front acoustic cavity and a rear acoustic cavity, the rear acoustic cavity is filled with sound-absorbing particles, and a cavity wall of the rear acoustic cavity is provided with a leakage hole. The barrier rib body is provided in the rear acoustic cavity, at least a part of the barrier rib body faces the leakage hole, and the distance between the leakage hole and the part of the barrier rib body facing the leakage hole is less than the size of the sound-absorbing particles. The technical solution of thc prcscnt disclosure can reduce the occurrence of the situation where the sound-absorbing particles block the leakage hole.

An audio transducer includes a frame, a magnet coupled to the frame, and a voice coil axially aligned with the magnet. The voice coil can be configured to receive a flow of electric signals from an amplifier, and, in response to the received flow of electric signals, correspondingly move a diaphragm toward or away from the magnet. The audio transducer can further include a collar coupled to the voice coil. The collar can have a flange extending radially outwardly from the voice coil. The audio transducer can further include a spider having a radially outer portion coupled to the frame and a radially inner portion coupled to the flange of the collar.

In various example embodiments, an electronic device 300 may include: a housing 310 including a first housing 311 facing a first direction, and a second housing 312 facing a second direction opposite to the first direction; a sound module 340 disposed on a surface of the first housing 311 facing the second direction and configured to generate a sound; an acoustic duct 350 formed in the first housing 311 such that the sound module 340 and an outside of the electronic device 300 communicate with each other, and configured to transmit the sound generated by the sound module 340 to the outside of the electronic device 300; and a resonance structure 360 formed in the first housing 311 to communicate with the acoustic duct 350 to tune a resonance characteristic according to a shape of the acoustic duct 350.

The present disclosure relates to an acoustic output apparatus. The acoustic output apparatus comprising: at least one low-frequency acoustic driver that outputs sound from at least two first sound guiding holes; at least one high-frequency acoustic driver that outputs sound from at least two second sound guiding holes; and a controller configured to cause the low-frequency acoustic driver to output sound in a first frequency range, and cause the high-frequency acoustic driver to output sound in a second frequency range, wherein the second frequency range includes frequencies higher than the first frequency range.

An acoustic matching structure is used to increase the power radiated from a transducing element with a higher impedance into a surrounding acoustic medium with a lower acoustic impedance. The acoustic matching structure consists of a thin, substantially planar cavity bounded by a two end walls and a side wall. The end walls of the cavity are formed by a blocking plate wall and a transducing element wall separated by a short distance (less than one quarter of the wavelength of acoustic waves in the surrounding medium at the operating frequency). The end walls and side wall bound a cavity with diameter approximately equal to half of the wavelength of acoustic waves in the surrounding medium. In operation, a transducing element generates acoustic oscillations in the fluid in the cavity. The transducing element may be an actuator which generates motion of an end wall in a direction perpendicular to the plane of the cavity to excite acoustic oscillations in the fluid in the cavity, and the cavity geometry and resonant amplification increase the amplitude of the resulting pressure oscillation. The cavity side wall or end walls contain at least one aperture positioned away from the center of the cavity to allow pressure waves to propagate into the surrounding acoustic medium.

A roof of a vehicle includes a panel, and at least one audio device selected from the loudspeakers and the actuators, and when the at least one audio device is an actuator, it is located on the panel, the panel being capable of vibrating.

An example speaker module includes a speaker housing including a conduit extending to an internal space; a speaker component positioned in a first area of the internal space adjacent to the conduit; a vent hole spaced apart from the speaker component and passing through at least part of the speaker housing; a sound absorbing material disposed in a second area of the internal space to be positioned adjacent to the speaker component to absorb a sound generated from the speaker component; and a guide structure disposed to surround the vent hole and including at least one protrusion protruding towards the internal space.

An electronic device is provided. The electronic device includes a speaker module. The speaker module includes an enclosure including a first housing and a second housing and a speaker driver included in the first housing. The second housing includes an adsorption cavity forming a back volume of the speaker driver, a variable structure included in at least a part of the second housing, at least one vent hole for ventilation between the adsorption cavity and an external environment, and a housing cover fixed to the variable structure. The adsorption cavity is filled with an adsorptive filler.

A covering structure disposed within a sound producing package includes a first portion, a second portion and a third portion. The first portion is configured to form a first sound outlet having a first diameter. The second portion is configured to form a chamber having a second diameter. The third portion is configured to form a second sound outlet having a third diameter. Wherein, the first sound outlet, the chamber and the second sound outlet provide an acoustic pathway, the first diameter is smaller than the second diameter, and the third diameter is smaller than the second diameter; and wherein, the second portion is disposed between the first portion and the third portion.

A display apparatus according to an embodiment of the present disclosure includes: a display cell that displays an image and has a thin-plate shape; one or more vibration exciters that are disposed on rear-surface side of the display cell and cause the display cell to vibrate; and an opposing plate opposed to the display cell with an air gap in between. The display apparatus further includes a sound-spreading adjustment member that is disposed between the display cell and the two or more vibration exciters, and controls spreading of a sound generated by vibration caused by the two or more vibration exciters.