A headset includes a speaker, such as a side firing dipole speaker. The headset includes a front chamber that receives sound waves from a first side of the speaker and a rear chamber that receives sound waves from a second side of the speaker. A control leak channel connects the front chamber and the rear chamber. An acoustic mesh may be located within the control leak channel. The speaker configuration is configured to reduce total harmonic distortion of the speaker, particularly in ranges such as 3-6 kHz, while maintaining the broadband efficiency of the speaker.

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.

Disclosed is an intelligent head-mounted apparatus, comprising: a lens; a leg coupled to the lens and provided with a cavity therein; a sound generation device provided in the cavity and dividing the cavity into a front sound cavity and a rear sound cavity; a sound outlet hole provided on the leg and in communication with the front sound cavity; and a main sound leakage hole provided on the leg and in communication with the rear sound cavity, wherein positions of the sound outlet hole and the main sound leakage hole are configured such that the sound outlet hole is located at a front side of an auricle of a wearer, and the main sound leakage hole is located at a rear side of the auricle of the wearer when the wearer wears the intelligent head-mounted apparatus.

A dipole pair audio system (e.g., integrated into an artificial reality headset) comprising a first audio assembly and a second audio assembly. The first audio assembly is configured to generate first acoustic pressure waves, and vent the first acoustic pressure waves into a local area via a first positive vent and a first negative vent. The second audio assembly is configured to generate second acoustic pressure waves, and vent the second acoustic pressure waves into the local area via a second positive vent and a second negative vent. The first acoustic pressure waves and the second acoustic pressure waves are the same and in phase for frequencies below a threshold frequency, and are the same but are out of phase for frequencies at or above the threshold frequency.

The present disclosure relates to an acoustic output device including an earphone core, a controller, a Bluetooth module, and a button module. The earphone core may include at least one low-frequency acoustic driver configured to output sounds from at least two first guiding holes and at least one high-frequency acoustic driver configured to output sounds from at least two second guiding holes. The controller may be configured to direct the at least one low-frequency acoustic driver to output the sounds in a first frequency range and direct the at least one high-frequency acoustic driver to output the sounds in a second frequency range. The Bluetooth module may be configured to connect the acoustic output device with at least one terminal device. The button module may be configured to implement an interaction between a user of the acoustic output device and the acoustic output device.

An acoustic device with an open audio device structure that is configured to be carried on the head or upper torso of a user, a housing carried by the open audio device structure, the housing having opposed first and second ends, a flat diaphragm in the housing and comprising a front face and a rear face, the diaphragm configured to radiate front acoustic radiation from its front face and rear acoustic radiation from its rear face, wherein the front and rear acoustic radiations are out of phase, structure that supports the diaphragm such that the diaphragm can move relative to the housing, a primary magnet adjacent to the rear face of the diaphragm, a magnetic circuit that defines a path for magnetic flux of the primary magnet, a voice coil that is exposed to the magnetic flux and is configured to move the diaphragm up and down along a radiation axis that is normal to the front face of the diaphragm, and first and second sound-emitting outlets in the housing, wherein the first sound-emitting outlet is in or proximate the first end of the housing and is acoustically coupled to the front face of the diaphragm so as to emit front acoustic radiation into an acoustic space, and wherein the second sound-emitting outlet is in or proximate the second end of the housing and is acoustically coupled to the rear face of the diaphragm so as to emit rear acoustic radiation into the same acoustic space.

A loudspeaker unit for producing sound at bass frequencies an array of two or more diaphragms. The first radiating surface and the second radiating surface are located on opposite faces of the diaphragm, and one or more of the diaphragms are included in a first subset of the diaphragms and one or more of the diaphragms are included in a second subset of the diaphragms; a plurality of drive units.

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.

The present invention provides a bass automobile seat module and an automobile. The bass automobile seat module includes a seat and a speaker box mounted at a bottom of the seat. The bottom of the seat is provided with a mounting slot; the speaker box includes a hollow shell arranged in the mounting slot and a double-sided sound module accommodated in the shell; the top and bottom of the double-sided sound module are respectively provided with a first vibration diaphragm and a second vibration diaphragm; and the first vibration diaphragm located in the mounting slot transmits a sound through the seat and a sound production channel of the double-sided sound module. The present invention can release a storage space of a door and can also automatically offset the resonance, which is convenient for providing a better listening effect.

Provided are a sounding structure and a terminal. The sounding structure comprises: a frame comprising an accommodation cavity, the accommodation cavity comprising a first opening and a second opening provided on two opposite sides of the frame; a magnetic circuit system arranged in the accommodation cavity and comprising a first channel and a second channel; a first vibrating diaphragm arranged to face the first opening and provided with a voice coil, the voice coil partially extending into the first channel; and a second vibrating diaphragm arranged to face the second opening, the second channel communicating the first opening with the second opening.