An electronic device is provided. The electronic device includes a first frame including a first surface, a second surface facing the direction opposite to that of the first surface, and a side surface encompassing the space between the first surface and the second surface, a guide path which is formed in the space of the first frame and which includes, from the side surface toward the space, an external environment connection hole formed at a specified depth, a first through-hole formed from the second surface up to the external environment connection hole, and a second through-hole formed at a location apart from the first through-hole so as to be formed from the first surface up to the second surface, and a sealing member including a sound module disposed on the first surface so as to correspond to the second through-hole, and a recess which is disposed on the second surface and connects the first through-hole to the second through-hole.

Supercoupling waveguides are provided in which acoustic impedance at an acoustic input port matches the acoustic impedance at an acoustic output port, where the acoustic path extending from the acoustic input port to the acoustic output port has a variable length. The supercoupling waveguides may be used in methods of sensing and measuring, and may be incorporated into sensors.

A waveguide housing for a speaker assembly. The speaker assembly includes first and second drivers coupled to the waveguide housing where the first driver generates a midrange sound signal and the second driver emits a high-frequency sound signal. The waveguide housing includes a first plurality of sound channels configured to receive the midrange sound signal from the first driver such that the midrange sound signal travels through the first plurality of sound channels and is emitted from the waveguide housing by a first plurality of openings in the waveguide housing. The waveguide housing also includes a second plurality of sound channels configured to receive the high-frequency sound signal from the second driver such that the high-frequency sound signal travels through the second plurality of sound channels and is emitted from the waveguide housing by a second plurality of openings in the waveguide housing.

An amplifier and an electronic device using the same are provided. The amplifier includes a first acoustic box, a speaker, a second acoustic box, a connection tube and at least one sound guide tube. The first acoustic box has a first sound hole. The speaker faces the first acoustic box. The second acoustic box has at least one second sound hole. The connection tube connects the first acoustic box and the second acoustic box. The sound guide tube is connected to the second sound hole.

The present disclosure discloses an acoustic output apparatus including at least one acoustic driver, a controller, and a supporting structure. The at least one acoustic driver may be configured to output sounds through at least two sound guiding holes. The at least two sound guiding holes may include a first sound guiding hole and a second sound guiding hole. The controller may be configured to control a phase and an amplitude of the sounds generated by the at least one acoustic driver using a control signal such that the sounds output by the at least one acoustic driver through the first and second sound guiding holes have opposite phases. The supporting structure may be provided with a baffle and configured to support the at least one acoustic driver such that the first and second sound guiding holes are located on both sides of the baffle.

Provided is a speaker box, including a housing having a receiving space and a speaker unit received therein. The housing extends into the receiving space to form a support wall. The speaker unit is supported by and fixed to the support wall. The housing has a sound output hole. The speaker unit includes a frame, a vibration system and magnetic circuit unit fixed to the frame, and a front cover covering the frame. The front cover is supported by and fixed to the support wall. The front cover includes a main body portion located above the vibration system, a side edge portion and a fixed portion covering the frame. The fixed portion is supported by and fixed to the support wall. The front cover has a through hole running through both the main body portion and the side edge portion. The speaker box has excellent sound quality.

Loudspeaker enclosures are disclosed that support improved acoustic radiation efficiency at low audible frequencies without compromising acoustic radiation efficiency at mid and high audible frequencies. Embodiments include enclosures having a primary chamber and a secondary chamber acoustically coupled to the primary chamber via a passive radiator. The geometrical characteristics of the secondary chamber and the corresponding air plenum are tailored for enhanced efficiency at low frequencies.

The present disclosure provides an acoustic output apparatus including one or more status sensors, at least one low-frequency acoustic driver, at least one high-frequency acoustic driver, at least two first sound guiding holes, and at least two second sound guiding holes. The status sensors may detect status information of a user. The low-frequency acoustic driver may generate at least one first sound, a frequency of which is within a first frequency range. The high-frequency acoustic driver may generate at least one second sound, a frequency of which is within a second frequency range including at least one frequency exceeding the first frequency range. The first and second sound guiding holes may output the first and second spatial sound, respectively. The first and second sound may be generated based on the status information, and may simulate a target sound coming from at least one virtual direction with respect to the user.

A waveguide housing for a speaker assembly. The speaker assembly includes first and second drivers coupled to the waveguide housing where the first driver generates a midrange sound signal and the second driver emits a high-frequency sound signal. The waveguide housing includes a first plurality of sound channels configured to receive the midrange sound signal from the first driver such that the midrange sound signal travels through the first plurality of sound channels and is emitted from the waveguide housing by a first plurality of openings in the waveguide housing. The waveguide housing also includes a second plurality of sound channels configured to receive the high-frequency sound signal from the second driver such that the high-frequency sound signal travels through the second plurality of sound channels and is emitted from the waveguide housing by a second plurality of openings in the waveguide housing.

In at least one embodiment, a loudspeaker assembly is provided. The loudspeaker assembly includes a loudspeaker and a waveguide. The loudspeaker includes a diaphragm to transmit an audio output. The waveguide being asymmetrical and at least partially surrounding the diaphragm. The waveguide being configured to control a directivity of the audio output.