The present invention relates to a loudspeaker including a uniform enclosure having front portion, side portions and back portion defining an inner volume, the front portion is formed as a waveguide surface and includes at least one driver in the waveguide surface and is capable of radiating the main acoustic power of the loudspeaker to direction of first acoustic axis, and an at least one additional driver attached to the enclosure, the additional driver is attached inside the enclosure such that a sub volume is formed inside the inner volume, the sub volume limited by the driver, spacers between the driver and the front portion, and the front portion of the enclosure, at least one first port is adapted to open from the sub volume to ambient volume either to side portion or back portion of the enclosure, and at least one resonator including at least one resonator cavity acoustically connected to the sub volume, the resonator being tuned to at least one of unwanted resonances of the sub volume. In accordance with the invention the resonator is formed as a separate unit connected to the uniform enclosure.

According to an aspect of the disclosure, a loudspeaker includes an enclosure. The enclosure includes a first plurality of sidewalls. The loudspeaker further includes a horn. The horn is defined in part by the first plurality of sidewalls. The horn includes a second plurality of sidewalls that are coupled to the first plurality of sidewalls and that include a first sidewall and a second sidewall. The horn further includes a motorboard that includes a first opening arranged along a plane and a second opening arranged along the plane. The motorboard is coupled to the first sidewall and the second sidewall. The loudspeaker further includes an active driver arranged concentric to the first opening to transmit sound waves directly through the first opening, and a passive component arranged concentric to the second opening to transmit sound waves directly through the second opening.

A mobile terminal is provided, including a housing (21) and a speaker (10). The speaker (10) includes a box (11) and a sound generation unit (12). The box (11) includes a first cover body (117), a second cover body (118), and a cover plate (13). A first chamber is formed between the sounding unit (12) and the inner bottom wall of the first cover body, and a sound hole (113) is disposed in the first cavity (111). A second cavity (112) is formed between the sound generation unit (12) and the second cover body (118). The sound generation unit (12) includes a diaphragm (123). A resonant cavity (114) with a through hole (116) on one side is formed in the first cover body (117), the cover plate (13) covers the through hole (116), and a microhole (115) is disposed. Airflow enters the second cavity (112) through the microhole (115).

A loudspeaker arrangement for a seat within a motor vehicle utilizes one or more localized sound output ports for low frequency sound reproduction. A housing, such as an enclosure, substantially surrounds a loudspeaker. One or more audio transmission line channels acoustically interconnect the interior of the enclosure to one or more sound output ports. The enclosure is situated below, behind, or in some fixed location around or within a vehicle seat. The sound outputs ports are situated at or near a headrest such that the output ports are located substantially less than a wavelength of sound at the highest operating frequency from either ear of the seat's occupant. The acoustic response and resonances of a 1) rear enclosure, 2) a front vented enclosure, 3) a loudspeaker, and 4) an audio transmission path from the enclosure to one or more output ports are used to provide localized low frequency sound reproduction.

A sound-reproducing device has a DSP and a μCom performing a predetermined calculation to an input signal, and an AMP amplifying the calculated signal and outputting the signal to a speaker unit. The DSP and the μCom cuts a part of a reverse characteristic of a frequency characteristic of the speaker unit in a low frequency, and superimposes the reverse characteristic on the input signal. The sound-reproducing device can overcome a shortage of low sound during reproduction of low to medium volume in the speaker unit having a relatively small diameter, and can keep reproduction sound quality without loss of the reproduction sound quality during reproduction of large volume.

A speaker apparatus includes a pair of left and right speaker blocks that respectively have acoustic output sections and that are arranged inside a backrest. The pair of speaker blocks are arranged horizontally side by side relative to a headrest located on a front surface side of the backrest, and at least part of the headrest is located within a range of a nominal directivity angle of acoustics output from the acoustic output sections. This ensures that, of the acoustics output from the acoustic output section of the speaker block on the left side, at least some acoustics that head for the right ear are blocked by the headrest and that, of the acoustics output from the acoustic output section of the speaker block on the right side, at least some acoustics that head for the left ear are blocked by the headrest.

The present invention relates to a vehicle door, which is installed on the vehicle. The door includes a shutter, a speaker and an inverted tube. The shutter has an accommodation cavity, and the speaker is installed in the shutter. The inverted tube is located in the accommodation cavity, with one end connected with the interior of the vehicle, and the other end forming an acoustic port with a flange. The inverted tube exports the sound from the rear cavity into the car. The inverted tube with the acoustic port can strengthen the resonance effect of the air, and strengthen the sound wave. It can improve the loudness of the speaker, reduce the noise of the airflow, and effectively improve the sound quality of the speaker.

An electronic apparatus includes a display panel including a first surface through which an image is displayed and a second surface opposite to the first surface, a rear cover including a rear surface portion spaced apart from the display panel with an inner space interposed therebetween and a sidewall portion connected to the rear surface portion and surrounding the inner space, an exciter including a vibrator disposed in the inner space to vibrate the display panel and a supporter fixed to the rear surface portion, and a passive element outputting a sound. A reinforcement opening is defined in the sidewall portion, the exciter overlaps the reinforcement opening in a direction penetrating through the reinforcement opening, and the passive element is disposed in the reinforcement opening.

The present application discloses a speaker, including a shell and a speaker unit. The speaker unit includes a frame, and a magnetic path assembly and a vibration assembly; wherein, a guide pipe is also arranged in the receiving space. Compared with the related art, the present invention has the advantages that the guide pipe having a first through hole is provided; a magnetic bowl is provided with a second through hole in a penetrating manner; a main magnet is provided with a third through hole in a penetrating manner; a support is provided with a fourth through hole in a penetrating manner; all the above through holes are communicated in sequence. Thus, air of a region of the rear cavity can be introduced to the front cavity, which achieves effects of increasing the loudness of the speaker and optimizing the acoustic performance.

A loudspeaker system for a vehicle may include a vehicle partition panel that separates an interior space and an exterior space; a loudspeaker device comprising a frame, a diaphragm elastically supported at the frame, and a driving device that is configured to provide driving power for operating the diaphragm; and an air chamber disposed between the diaphragm and the vehicle partition panel. The frame delimits a chamber side opening of the air chamber facing the vehicle partition panel, where the vehicle partition panel comprises a vehicle partition panel opening. The vehicle partition panel opening has an extension which is smaller than the diameter of the diaphragm and smaller than an extension of the chamber side opening. The loudspeaker device is fixed to the vehicle partition panel such that the chamber side opening and the vehicle partition panel opening overlap in an overlapping area and the chamber side opening adjoins the vehicle partition panel opening.