375 results about "Loudspeaker enclosure" patented technology

A present waterproof patient handset includes a speaker contained within an enclosure. The enclosure has a number of holes sufficient to allow sound to pass from the speaker through the enclosure. A foil is placed on the enclosure over the holes, and attached to the enclosure only at the foil's perimeter such that the remainder of the foil acts as a second membrane for the speaker. At the same time, the foil seals the speaker against intrusion by a liquid. A protection plate with holes sits between the enclosure and the speaker, and provides mechanical protection for the speaker. A rear cover has at least one boss having at least one deformable rib. The boss is inserted through a hole in a printed circuit board (PCB). The rib is deformed when the PCB is pressed with the front cover against the rib.

Methods and apparatus are disclosed to reduce the size, weight, and heat loss of power modules mountable in loudspeakers. Disclosed embodiments replace conventional linear technology with high frequency switching technology in both the power supply and amplifier. In these embodiments Class-D switching occurs at a low and fixed frequency, using standard components, with audio performance improvements through adaptation of internal error correction. By permitting 100% modulation, maximum output power is obtained, and a simple clip-detecting scheme is possible. A half-bridge and full-bridge with a single main supply reservoir is disclosed, obtaining useful allocation of output power while enabling the use of a simplified power supply. Power supply improvements include simplification and high efficiency, while meeting the particular system requirements of this scheme. Advantages include: increased acoustic output, reduced distortion, wider frequency range, smaller and lighter speaker housings, and lower cost.

A loud speaker according to the invention is mountable within a receptacle. The loudspeaker includes a magnetic driver and a diagragm mounted to a frame. The froame includes a mounting member extending from a surface of the frame behind the flange plane. The mounting member is engagable in a notch formed in the receptacle for securing the speaker within the receptacle. The loudspeaker enclosure has perforated layer shaped to define its inner volume. A honeycomb layer surrounds that perforated layer; and semi-rigid layer surrounds the honeycomb layer and forms the exterior wall.

A single enclosure loudspeaker system projects multi-channel surround sound into a listener's room, and so replaces multiple conventional surround channel loudspeakers. The loudspeaker system includes a pair of opposing multi transducer arrays oriented laterally toward walls or reflecting surfaces (relative to the viewing axis) within the media space. The multi-element arrays are housed in a single self-powered loudspeaker enclosure along with a single (or multiple) low-frequency electro-acoustical drive element(s). In one embodiment of the invention, surround channel program material is pre-processed by an integrated wireless transmission device that performs certain digital signal processing and channel mixing steps in advance of wireless surround signal broadcast to a receiver.

A loudspeaker enclosure is arranged to support at least one electromagnetic loudspeaker driver generating both front and back acoustic waves. The front of the speaker is substantially planar and the driver is mounted in an opening in the front of the enclosure to radiate forwardly. The driver's back wave communicates through a passage adapted to function as an impedance-matched transmission line cavity having a length that is, preferably, three times the driver cone's diameter, and having one or more ports terminating in openings defined in a plane that is, preferably, substantially perpendicular to the enclosure's planar front. The port or ports have a cross sectional area of, preferably 0.707 to 1.414 times the operative area of the driver cone, thereby giving a highly efficient means of sound propagation.

An interfacing device for PDA/wireless terminal is disclosed. The interfacing device of the wireless terminal includes: a main housing provided with a main liquid crystal display (LCD) and a plurality of keys; a speaker housing which opens/closes at the main housing; a hinge means for connecting the main housing with the speaker housing; and a key top housing, which is connected to the hinge means, includes a designated shape window and an array of a plurality of keys, and opens and closes inbetween the main housing and the speaking housing, in which an auxiliary LCD is mounted at a designated position of the speaker housing to help a user to interface the auxiliary LCD through the window when the keypad housing is opened. The device has increased the convenience of use a great deal.

A manually operated flip dog mountable ceiling speaker enclosure, for ceiling or other panel installation, provides a plurality of flip dogs mounted tangentially on an annular flange around an opening of a speaker can and operated by either pulling on an actuator to create a cam-driven rotation to a radial alignment and a downward dog movement to a ratcheted clamping position, or by first rotating the manual actuator to rotate the dog and then pulling the actuator to pull the dog down into a ratcheted clamping position. Ratchet points on the dog are urged into ratchet points on a wall by a releasable biasing member. Three embodiments are illustrated.

A two-port air pump speaker that includes at least two active, phase-modulated, bi-directional shutters and an ultrasonic pumping chamber having at least two ports; a first port facing towards the listener, the forward port, and a second port facing another direction, the backward port which may be behind an acoustic baffle or inside a speaker enclosure. A two-port speaker with two active steering shutters can create continuous bi-directional airflow which leads to low distortion reproduction of low audio frequencies. The same improved design can be used also for other applications where acoustic modulation is required, especially in ultrasonic frequencies.

A system for wireless power transmission is provided. The system comprises a speaker enclosure and a plurality of tiles positioned along the speaker enclosure. At least one of the tiles comprises an antenna and a radio frequency integrated circuit (RFIC) coupled to the antenna and the RFIC is configured to engage the antenna such that the antenna emits a plurality of wireless power waves defining a pocket of energy.

A camera lens module-integrated speaker assembly is provided, which includes a speaker housing, a camera lens module mounted through a center of the speaker housing, and a speaker module surrounding the camera lens module along an outer circumference of the camera lens module.

A speaker enclosure including a compact quarter wavelength transmission path in the shape of a closed spiral that expands radially outward from a centrally located loudspeaker mounting location. The height of the transmission path has a minimum height that is equal to the height of the basket of the desired speaker. The quarter wavelength transmission path spiral of the provides an aerodynamic path for air flow therein which reduces the turbulence of air flow to a minimum that in turn provides even resistance to the air flow within the transmission line (Exhale vs. Inhale).

The subject invention is directed to a portable entertainment system that includes a housing unit and an audio system supported by the housing unit. A transport structure is coupled to the housing unit such that the housing unit is portable. The audio system includes electronic audio equipment and at least a first pair of speakers coupled to the electronic audio equipment. The housing unit contains a speaker enclosure and a support panel is disposed between and substantially parallel to the front and rear panels and the support panel divides the speaker enclosure to form a front air-filled section and a rear air-filled section. A first audio port extends through the housing unit into a front air-filled section of the speaker enclosure and a second audio port extends through the housing unit at least into a rear air-filled section of the speaker enclosure. When a first pair of speakers moves towards the rear panel in response to electrical signals from the electronic equipment, compressed air within the rear air-filled section flows out of a second audio port and when the first pair of speakers moves towards the front panel in response to electrical signals from the electronic equipment, compressed air within the front air-filled section flows out of a first audio port.

A speaker enclosure having a substantially seamless rigid outer skin, a middle sound absorbing layer, and a substantially seamless inner skin results in a lightweight speaker having sound absorbing characteristics. The speaker enclosure is comprised of two basic parts, a box section and a baffle section where each of these sections include a rigid outer skin, the middle sound absorbing layer and a seamless inner skin and are made according to the same method. The outer skin is formed from a layer of sheet molding compound, the middle sound absorbing layer includes pieces of honeycomb material, and the inner skin is formed from a layer of sheet molding compound. The layers of material are placed into a mold and then cured through vacuum bagging and heating thereby producing a strong, lightweight speaker enclosure made of materials which attenuate the transmission and retransmission of errant sound waves in the enclosure thereby reducing distortion of the sound signal produced by the speaker.

The invention relates to a connecting unit for the angle-adjustable connection of at least two loudspeaker enclosures. There are provided a first supporting part (13), which can be assigned to one loudspeaker enclosure (11), and a second supporting part (14), which can be assigned to the other loudspeaker enclosure (12), it being the case that the supporting parts (13, 14) are connected to one another in an articulated manner, and the angle position assumed in each case between the two supporting parts (13, 14) is fixed in an adjustable manner by an angle-position device (15) which acts in the manner of a turnbuckle.

A speaker system, includes a speaker enclosure that has a surface, a speaker that is mounted in the speaker enclosure, a vibration portion that has one end fixed on the surface of the speaker enclosure so as to be allowed to vibrate elastically, an opening portion that is provided in the surface where the vibration portion is provided, and disposed in a position corresponding to a vibration region of the vibration portion and a sealing member that covers a gap formed between the vibration portion and a rim portion of the opening portion while enabling vibration of the vibration portion so as to keep the speaker enclosure airtight.