A loudspeaker comprises a first diaphragm, a second passive diaphragm, and a drive unit coupled to the first diaphragm. The drive unit is configured to drive the first diaphragm in a direction of excursion upon applying electrical energy to the drive unit. The second passive diaphragm is arranged opposing the first diaphragm. The second passive diaphragm is mainly driven by sound waves emitted from the first diaphragm.

An earbud includes a housing that includes a driver assembly positioned within the housing forming a front volume in front of the driver and a back volume behind the driver. An acoustic insert is positioned behind the driver assembly and attached to an interior surface of the housing such that it forms a bass channel that is routed from the back volume to a vent in the housing.

A voice-controlled electronic device that includes a device housing having a longitudinal axis bisecting opposing top and bottom surfaces and a side surface extending between the top and bottom surfaces. The device can further include one or more microphones disposed within the device housing and distributed radially around the longitudinal axis; a processor configured to execute computer instructions stored in a computer-readable memory for interacting with a user and processing voice commands received by the one or more microphones and first transducer and second transducers configured to generate sound waves within different frequency ranges.

A speaker device of the present disclosure includes a speaker unit, a first passive radiator disposed adjacent to a vibrating plate of the speaker unit, a second passive radiator located in a first direction with respect to the first passive radiator and disposed to be opposed to the first passive radiator, a first cabinet including a first wall section and forming a sealed acoustic space, and a second cabinet including a second wall section, including an opening section adjacent to the first passive radiator, and forming an opened acoustic space. The second passive radiator is located in a second direction with respect to a first imaginary surface passing the first wall section of the first cabinet. The second wall section of the second cabinet does not project in the first direction with respect to the first wall section.

Embodiments of this application provide a speaker module and a portable electronic device. The speaker module includes a first speaker module and a second speaker module. The first speaker module includes a first housing and a first speaker monomer accommodated in the first housing, and the first speaker monomer has a first diaphragm. The second speaker module includes a second housing and a second speaker monomer accommodated in the second housing, and the second speaker monomer has a second diaphragm. The first speaker module and the second speaker module are sequentially disposed in a vertical direction, and a vibration direction of the first diaphragm is opposite to a vibration direction of the second diaphragm, so that momentum variations (mv) Δ of the speaker module are offset against each other, thereby resolving a problem that a vibration feeling is strong when the speaker module works.

In an embodiment, an earphone having a solid earphone body is provided. A first mounting recess is formed in a first end of the earphone body. A first acoustic driver is disposed in the first mounting recess. At least a first sound bore is formed in the solid earphone body. The at least a first sound bore fluidly communicates with the first mounting recess and a first exit port formed at a second end of the earphone body. The second end of the earphone body is configured to be placed in an ear canal of a user. The earphone can be fabricated by a method that includes defining negative spaces for the first acoustic driver and the at least a first sound bore in a virtual model of the earphone body.

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.

An electronic device according to various embodiments of the disclosure includes: a first housing; a second housing configured to be unfolded by a specified angle with respect to the first housing and to rotate about a folding axis; at least one hinge structure including a hinge providing the folding axis and disposed between the first housing and the second housing to rotatably connect the first housing and the second housing; a hinge cover accommodating at least a portion of the hinge structure therein and selectively exposed based on the rotation of the second housing; a first speaker module including a speaker accommodated in the first housing; and a second speaker module including a speaker accommodated in the second housing, wherein in the first state, the first speaker module is configured to discharge sound to the outside of the electronic device via a first area provided in the first housing, a second area provided in the hinge structure and contact with the first area, and a first through-hole extending through the hinge cover, is exposed to the outside in the first state, and is configured to be selectively closed based on the rotation of the second housing.

A speaker comprises a housing, a transducer residing inside the housing, and at least one sound guiding hole located on the housing. The transducer generates vibrations. The vibrations produce a sound wave inside the housing and cause a leaked sound wave spreading outside the housing from a portion of the housing. The at least one sound guiding hole guides the sound wave inside the housing through the at least one sound guiding hole to an outside of the housing. The guided sound wave interferes with the leaked sound wave in a target region. The interference at a specific frequency relates to a distance between the at least one sound guiding hole and the portion of the housing.

A loudspeaker assembly for a vehicle includes a loudspeaker having a first side and an opposed second side, wherein the loudspeaker is configured to generate an acoustical signal having a front wave directed into an interior of the vehicle and a rear wave directed toward an exterior of the vehicle. The loudspeaker assembly further includes a coupler disposed on the second side of the loudspeaker, the coupler including an inlet portion for receiving the loudspeaker and an outlet portion. A flexible port is removably connectable to the coupler, the flexible port including an inlet end arranged to be connected to the outlet portion of the coupler, an outlet end arranged to be connected to an opening in an exterior body panel, and an elongated body extending between the inlet end and the outlet end, the flexible port configured to transmit the rear wave to the exterior of the vehicle.