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 terminal speaker includes an enclosure with accommodating space with an affixed sound production monomer. The sound production monomer has a diaphragm configured to vibrate to produce sound. The enclosure includes a first inner bottom wall and an inner sidewall fastened to the first inner bottom wall. The diaphragm is fastened to the inner sidewall, dividing the accommodating space into front and rear cavities. The first inner bottom wall is in the front cavity. A sound outlet hole penetrates the inner sidewall. The front cavity is in communication with the sound outlet hole by a front cavity channel. The diaphragm is tilted relative to the first inner bottom wall. The perimeter of the end of the front cavity in communication with the sound outlet hole is greater than the perimeter of the end of the front cavity remote from the sound outlet hole.

A loudspeaker is provided that includes an outer tubular section, an inner tubular section at least partially disposed within the outer tubular section, a driver disposed in the inner tubular section at an angle offset from a cross-sectional plane of the inner tubular section, a sound deflector disposed at a first end of the outer tubular section, and a void defined collectively by a space between a first end of the inner tubular section within the outer tubular section and the sound deflector, and a space between an outer portion of the inner tubular section and an inner portion of the outer tubular section. The sound produced by the driver passes through the void via the space between the first end of the inner tubular section within the outer tubular section and the sound deflector, and then via the space between the outer portion of the inner tubular section and the inner portion of the outer tubular section.

Audio device transducer arrays and associated systems and methods are disclosed herein. In some examples, the audio device can comprise a housing including a baffle and an acoustically reflective plate spaced apart from and facing at least partially toward the baffle, such that the baffle and the plate define an opening therebetween. The audio device can further comprise an array of electroacoustic transducers disposed within or surrounded by the baffle and configured to emit acoustic waves toward the opening. The array of transducers can be configured to produce acoustic waves having a frequency of about 1.5 kilohertz (kHz) or greater.

The present disclosure relates to a pair of glasses. The pair of glasses may include a frame, one or more lenses, and one or more temples. The pair of glasses may further include at least one low-frequency acoustic driver, at least one high-frequency acoustic driver, and a controller. The at least one low-frequency acoustic driver may be configured to output sounds from at least two first guiding holes. The at least one high-frequency acoustic driver may be configured to output sounds from at least two second guiding holes. The controller may be configured to direct the low-frequency acoustic driver to output the sounds in a first frequency range and direct the high-frequency acoustic driver to output the sounds in a second frequency range. The second frequency range may include one or more frequencies higher than one or more frequencies in the first frequency range.

A transducer arrangement for head- or earphones comprises a sound steering unit, which comprises a frontal chamber and at least one sound canal. Each of the at least one sound canal comprises at least one internal opening towards the frontal chamber and an external open end for directing sound towards the outside of the transducer arrangement. The transducer arrangement further comprises a rear chamber and at least one loudspeaker arranged between the frontal chamber and the rear chamber.

Disclosed herein is an electronic device. In an embodiment, the electronic device may include a body, a display combined with the front of the body, and a speaker assembly embedded on at least one side of the body, wherein the speaker assembly may include a casing configured to form an external appearance and a speaker unit combined with the casing and configured to have at least part of an element of the speaker assembly exposed to an outside of the casing.

The present disclosure provides a loudspeaker module, comprising a housing and a loudspeaker unit accommodated in a space of the housing, wherein the loudspeaker unit divides the space of the housing into a front sound cavity and a rear sound cavity, a through hole penetrating the housing is provided on the housing at a position corresponding to the front sound cavity, the loudspeaker module further comprises a cover plate covering the through hole, the cover plate comprising at least one metal foam layer and at least one metal sheet layer. Compared with the related art, the cover plate comprises the metal foam layer, so as to weaken the resonance effect of the loudspeaker module and to reduce the distortion of the loudspeaker module, thereby improving the acoustic performance of the loudspeaker module.

An electronic device can include a housing defining an aperture and a display positioned in the aperture. The display and the housing can define an internal volume in which a speaker assembly is positioned. The speaker assembly can include a speaker module and a speaker enclosure in fluid communication, with the speaker enclosure at least partially defining a speaker volume.