A speaker module structure according to various embodiments may include a first structure, a second structure configured to couple to the first structure, and a speaker coupled to at least one of the first structure or the second structure, wherein the second structure comprises at least one groove configured to form a resonance space by coupling between the first structure and the second structure, the resonance space is connected to the speaker and has an adsorption material injected therein, and when the first structure and the second structure are coupled, one end of the groove comprises an opening formed in a closed loop comprising a part of the first structure and a part of the second structure.

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.

Embodiments for one-way sound absorbing systems are described herein. In one example, a sound absorbing system includes a waveguide having open ends for receiving an incoming acoustic wave and wall portions defining a first port and a second port. A first electroacoustic absorber is mounted to the first port and is electrically connected to a shunting circuit, while a second electroacoustic absorber is mounted to the second port and is electrically connected to an open circuit. The sound absorption of the system is directional dependent.

The present application provides a sound adsorbing material, including a microporous material and an adsorbate gas adsorbed in the microporous material. The microporous material includes a zeolite molecular sieve, and the zeolite molecular sieve has a framework and extra-framework cations. An adsorption capacity of the adsorbolite molecular sieve to the adsorbate gas is greater than an adsorption capacity of the adsorbolite molecular sieve to air. The present disclosure further provides a speaker box adopting the sound adsorbing material. Compared with the related art, the sound adsorbing material provided by the present disclosure has good application effects, and the speaker box using the sound adsorbing material has a better low frequency acoustic performance.

An electronic device including a speaker with a porous sheet, a speaker is provided. The electronic device includes a main body, a sound generator, which includes a voice coil, a sound body surrounding the voice coil, and a terminal that is at least partially exposed to an outside of the sound body, a printed circuit board (PCB) connected to the terminal and extending outwardly from the main body, and a porous sheet inserted into the main body and spaced apart from the terminal.

Provided is a bone conduction hearing aid device, including: a housing, a piezoelectric vibration assembly and a vibration transmission element, the piezoelectric vibration assembly and the vibration transmission element are both arranged in the housing, a first end of the vibration transmission element is connected with the piezoelectric vibration assembly, a second end of the vibration transmission element is connected with the housing, and the housing includes a vibration output portion that outputs vibration through contact.

A playback device comprises an electroacoustic transducer; an acoustic waveguide in fluid communication with the transducer; and a housing delimiting an opening of the waveguide, the opening extending around an axis passing through the transducer. The opening may have a radial distance from the axis that varies with an azimuthal angle about the axis. An acoustic path length within the waveguide, between the transducer and the opening, is substantially constant and independent of azimuthal angle about the axis.

The present disclosure provides a speaker which includes a case component, a vibration plate, a driving component, a first adjustment unit, and a second adjustment unit. The case component has an accommodating space and a sound outlet channel. The accommodating space communicates with the sound outlet channel. The vibration plate is disposed in the accommodating space. The driving component is disposed in the accommodating space and configured to drive the vibration plate to vibrate. The first adjustment unit is disposed in the sound outlet channel, and the first adjustment unit is constituted of acoustic metamaterials. The second adjustment unit is disposed on one side of the vibration plate, and the second adjustment unit is constituted of acoustic metamaterials.

A mobile terminal includes a housing and a speaker component including a speaker unit that divides a cavity of the speaker component into a front speaker box and a rear speaker box, an air vent coupled to an inner cavity of the housing is disposed on a wall of the rear speaker box, and a flexible sound absorbing member that can absorb a sound and damp vibration is disposed on a wall of the inner cavity of the housing.

An acoustic device comprises a sound generating unit comprising a diaphragm. An acoustic wave at a front side radiates outwards through a sound outlet. A closed cavity is formed at a rear side of the vibrating diaphragm. Volume adjustment regions are provided in the closed cavity, the volume adjustment regions are a sound absorption portion, a porous sound absorbing material is provided on the sound absorption portion, and the volume adjustment regions are a flexibly deformable portion. The closed cavity is divided into first and second closed cavities by a partition. The first closed cavity is adjacent to the diaphragm, the second closed cavity is far away from the vibrating diaphragm. The flexibly deformable portion is at least part of the partition, and deforms flexibly. The sound absorbing material is provided in the first and/or the second closed cavity, and effectively increase the equivalent volume of the closed cavity.