Abstract: An acoustic reflector includes a reflection portion on which an elliptical reflection surface is formed, in which sound output from a speaker device that has an output position of the sound at or near one focal point on the elliptical reflection surface is reflected by the elliptical reflection surface, and the reflection portion has a size that reflects sound in a range of equal to or less than a nominal directional angle of the speaker device. As a result, because an outer shape of the reflection portion is formed to have a size in the range corresponding to the nominal directional angle of the speaker device, it is possible to reduce the size of the acoustic reflector.

Abstract: A loudspeaker assembly for a vehicle includes a loudspeaker having a first side and an opposed second side, wherein the loudspeaker is configured to generate an acoustical signal having a front wave directed into an interior of the vehicle and a rear wave directed toward an exterior of the vehicle. The loudspeaker assembly further includes a coupler disposed on the second side of the loudspeaker, the coupler including an inlet portion for receiving the loudspeaker and an outlet portion. A flexible port is removably connectable to the coupler, the flexible port including an inlet end arranged to be connected to the outlet portion of the coupler, an outlet end arranged to be connected to an opening in an exterior body panel, and an elongated body extending between the inlet end and the outlet end, the flexible port configured to transmit the rear wave to the exterior of the vehicle.

Abstract: A vehicle instrument panel assembly includes a front panel, a speaker disposed within the front panel for generating sounds and a cover disposed over the speaker. The cover includes a plurality of openings for the transmission of sound and a corresponding plurality of blockers at each of the plurality of openings. Each of the plurality of blockers includes a front face that is spaced apart forward of a corresponding one of the plurality of openings for blocking water intrusion.

Abstract: An acoustic reflector and an acoustic electronics device are disclosed. The acoustic reflector is for being used inside an enclosure of an acoustic electronics device, which is made of thermal conductive material and functions as a heat sink. The acoustic electronics device comprises such an acoustic reflector.

Abstract: Provided is an acoustic device with which it is possible to make reproduced sound able to be heard across a wide frequency range, from the front and from the rear. This acoustic device is provided with a flat speaker 3 configured to emit sound, from a front and a rear thereof, in a low frequency sound range. Also, provided therein are a first speaker 5F configured to emit sound, in a direction facing the front of the flat speaker, in a mid-to-high frequency sound range, and a second speaker 5R configured to emit sound, in a direction facing the rear of the flat speaker, in the mid-to-high frequency sound range.

Abstract: A housing with a top wall, a bottom wall, left end wall, right end wall, and a front cover each having a plurality of openings; a louver connector in a first opening of a first louver and a second opening of a second louver and connected to a third louver that extends between the left end wall and an interior wall (the louvers each being pivotally mounted); a connector attached to the third louver that receives a tab end of a bi-coil that is thermally activated to move the third louver to an open or closed position and the louver connector moves the first louver and the second louver to a corresponding position; and a manual override lever that moves the second louver to an open or closed position and the louver connector moves the first louver and the third louver to a corresponding position.

Abstract: A ceiling tile loudspeaker includes an acoustic enclosure that defines an acoustic cavity. An electro-acoustic transducer is supported by the enclosure such that a first radiating surface of the electro-acoustic transducer radiates acoustic energy into the acoustic cavity and a second radiating surface of the electro-acoustic transducer radiates acoustic energy outward away from the acoustic enclosure. A first baffle is disposed within the acoustic cavity. The loudspeaker also includes a plurality of partitions, which, together with the first baffle, defines a plurality of ports that acoustically couple the acoustic cavity to an exterior of the enclosure. Each of the plurality of ports includes a first open end, a second open end, and a central axis extending therebetween. The ports are arranged such that their central axes lie in a plane that is substantially perpendicular to a motion axis of the electro-acoustic transducer.

Abstract: The invention relates to a loudspeaker unit (10), which includes a housing (12) that has a peripheral housing edge (14) and a front element (20), and a loudspeaker, which is arranged inside the housing (12), wherein the loudspeaker has an in particular dome-shaped diaphragm, which is arranged behind the front element (20). In order to improve the loudspeaker unit (10) having the loudspeaker and the housing (12), according to the invention, the front element (20) has a multiplicity of passage openings (26), and the individual passage openings (26) are formed in the manner of a labyrinth.

Abstract: The present invention relates to a reflector for an acoustic shock or pressure wave head, wherein the reflector comprises an acoustically reflective surface formed by a body of rotation, said body of rotation being formed by rotation of an elliptical segment about a rotation axis which extends through a focal point of the ellipse and encloses an angle ? between 0.1° and 30° with the main axis of the ellipse.

Abstract: Various implementations include speaker systems. In a particular implementation, a speaker system includes: a first loudspeaker configured to drive at least one of a port or a passive radiator that is tuned at a first frequency; and a second loudspeaker configured to drive at least one of a port or a passive radiator that is tuned at a second frequency, the second frequency being higher than the first frequency, where the first loudspeaker is configured to output audio at the second frequency.

Abstract: A sound system with upfiring speakers and a redirecting baffle is shown and described. Upfiring speakers simulate overhead speakers by using a ceiling to reflect sound toward the listener from above the listener's head. However, in rooms with high ceilings, such reflection is not practical. The redirecting baffle is spaced apart from the upfiring speakers along a height axis and is oriented downward so that a surface normal to the baffle is neither parallel to nor perpendicular to the floor. By adjusting the angle of orientation, the location at which the reflected sound quality is best can be adjusted toward or away from the upfiring speakers. The system is particularly useful for in-store displays as many stores have ceiling heights that make sound reflection from an upfiring speaker impractical.

Abstract: The present invention provides a speaker box, includes a housing having an accommodating space, a speaker unit accommodated in the accommodating space of the housing, and a sound channel formed in the accommodating space. The speaker unit includes a diaphragm that vibrates sound. The diaphragm divides the accommodating space into a front sound cavity and a rear cavity. The sound channel communicates the front sound cavity with an outside and is connected with the front sound cavity to form a front cavity. The sound channel includes a first sound channel communicating the front sound cavity with the outside and two second sound channels communicating with the front sound cavity and the first sound channel. The second sound channels are respectively disposed at opposite sides of the first sound channel.

Abstract: An omni-directional speaker system includes a deflector sub-assembly and a pair of acoustic sub-assemblies. The deflector sub-assembly includes a pair of diametrically opposed acoustic deflectors. Each of the acoustic sub-assemblies includes an acoustic driver for radiating acoustic energy toward an associated one of the acoustic deflectors. The acoustic sub-assemblies are coupled together via the deflector sub-assembly.

Abstract: An omni-directional acoustic deflector includes an acoustically reflective body having a substantially conical outer surface, and an inner surface opposite the outer surface. The inner surface defines a region that is configured to be coupled to a first electronic component such that heat is transferred from the first electronic component to the outer surface of the acoustically reflective body.

Abstract: A loudspeaker includes an acoustic enclosure, and an electro-acoustic transducer that is supported by the acoustic enclosure. A grille covers the electro-acoustic transducer, and a weather-resistant member is disposed between the acoustic enclosure and the grille. A spring member is disposed between the weather-resistant member and the acoustic enclosure. The spring member is configured to apply a force to the weather-resistant layer thereby to hold the weather-resistant member against the grille.

Abstract: The present disclosure relates to loudspeaker systems and configurations. In one embodiment, a loudspeaker includes a housing, a mount coupled to the housing, and a coaxial speaker fixed with the housing, wherein coaxial speaker is fixed with an angular offset from a horizontal plane of the housing. The coaxial speaker may be fixed with an angular offset from a horizontal plane of the housing to project sound to position behind a marine vehicle, such as a desired rider position. The loudspeaker may also include at least one multicolor element and connections to receive audio data and lighting control signals for the multicolor element.

Abstract: A speaker system broadly comprises a plurality of speaker assemblies each including a speaker housing, an input circuit, a low range speaker, and a higher-range speaker. The input circuit receives audio signals from a sound system or other controller and actively or passively sends the audio signals to the speakers. The low-range speaker is positioned in the upper section and the higher-range speaker is positioned in the lower section. Each speaker assembly is configured to be suspended from an elevated structure and spaced from the other speaker assemblies within a listening area with each speaker assembly generating low frequency soundwaves and higher-frequency soundwaves. This reduces or eliminates out-of-phase crossover frequency wave cancellation effects within the listening area. The speaker housings are compact while allowing the low-range speaker and higher-range speaker to effectively produce and project desired soundwaves from the suspended speaker housing into the listening area.

Abstract: An in-wall amplifier assembly includes a wireless communication device and an amplifier located inside a first housing configured for in-wall installation, with the amplifier configured to amplify the audio output from the wireless communication device and supply it to external speakers. An AC/DC adapter located in a second housing can be connected thereto to supply DC power to the amplifier and wireless communication device. The wireless communication device can be removably accommodated in a faceplate of the first housing and held in place by a wall plate installed thereover. The amplifier can accept an external audio input from another source and automatically switch the amplified audio output between the output of the wireless communication device and the external audio input.

Abstract: A method for generating a prediction curve for acoustic load of a loudspeaker, the loudspeaker including a horn and a diaphragm, one end of the horn is defined as a throat, and the outside of the other end of the horn is free space, wherein a sound wave from the diaphragm passes through the throat and gradually diffuses to the free space outside the other end of the horn, includes defining a cross section or a surface, where the cross section is a cross section of the throat, and the surface is a surface of the diaphragm; integrating a sound pressure value of the cross section or the surface to obtain an effective sound pressure, or integrating acoustic energy of the cross section or the surface to obtain a radiated sound power; and generating the prediction curve according to the effective sound pressure or the radiated sound power, where the prediction curve is an acoustic impedance curve or an acoustic power curve.

Abstract: A diffuser includes a cone body including an apex portion, a bottom portion, and a side edge portion. The apex portion forms a partial spherical surface, and the side edge portion is aspherical and is connected between the apex portion and the bottom portion. The apex portion satisfies: 2R/3?r?R, where r is a radius of curvature of the apex portion, and R is a radius of curvature of a spherical diaphragm of a tweeter speaker. A loudspeaker including a tweeter speaker and a diffuser is also provided.

Abstract: A speaker is provided. The speaker includes a sound output unit comprising sound output circuitry having a sound emission hole disposed at one side, a sound reflector disposed at a lower side of the sound output unit and being spaced apart from the sound output unit, the sound reflector having a convex form upper side, and a support having one end fixed to the sound reflector and another end rotatably supporting the sound output unit, wherein the sound output unit is positioned in one of a first posture in which the sound emission hole faces the upper side of the sound reflector and a second posture in which the sound emission hole does not face the upper side of the sound reflector.

Abstract: A speaker box for accommodating a speaker, including an outlet port provided avoiding an area corresponding to a center portion of the speaker, in a first side surface section of the speaker box which is parallel to a center axis of the speaker, and an inlet port provided avoiding an area corresponding to the center portion of the speaker, in a second side surface section of the speaker box which is opposed to the first side surface section via the speaker.

Abstract: A presentation device for use with a computing device including a display device and an audio output. The presentation device includes a body member defining an interior volume and at least a first opening. The body member further includes a partially reflective and partially transmissive medium. The body member is configured to receive anamorphically-distorted imagery that is displayed by the display device, which has a predefined arrangement with the body member. The body member is further configured to reconstitute the anamorphically-distorted imagery as a three-dimensional illusion that appears within the interior volume. The body member is further configured to guide audio from the audio output to exit the body member through the first opening.

Abstract: A desktop device comprises a housing having a bottom side configured to face a surface on which the device is to be placed, such as a desktop, and a front side configured to face a user of the device. A down-firing speaker is placed inside the housing. A speaker port is disposed on the bottom side of the housing. A horn assembly on the housing is arranged to define a speaker horn in combination with the surface on which the device is placed.

Abstract: A sound masking system according to the invention is disclosed in which one or more sound masking loudspeaker assemblies are coupled to one or more electronic sound masking signal generators. The loudspeaker assemblies in the system of the invention have a low directivity index and preferably emit an acoustic sound masking signal that has a sound masking spectrum specifically designed to provide superior sound masking in an open plan office. Each of the plurality of loudspeaker assemblies is oriented to provide the acoustic sound masking signal in a direct path into the predetermined area in which masking sound is needed. In addition, the sound masking system of the invention can include a remote control function by which a user can select from a plurality of stored sets of information for providing from a recipient loudspeaker assembly an acoustic sound masking signal having a-selected sound masking spectrum.

Abstract: A portable electronic module includes a casing having an air inlet, a heat generating member disposed in the casing, and a heat dissipating mechanism. The heat dissipating mechanism includes a fixing frame disposed at the casing corresponding to the air inlet, a driving handle, a driving device for driving the driving handle to move reciprocally, and a plurality of fans. The driving handle is disposed at a side of the fixing frame and has a plurality of holes arranged alternately. The fans are pivotally connected to the fixing frame in an alternate arrangement so as to swing relative to the fixing frame. Each fan has a protruding pillar extending toward the corresponding hole. Each protruding pillar is movably disposed through the corresponding hole, so that each fan could swing with reciprocation of the driving handle to guide airflow to pass through the air inlet to the heat generating member.

Abstract: The present invention relates to a loudspeaker including an 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 center of the waveguide surface and is capable to radiate the main acoustic power of the loudspeaker to ambient volume in direction of first acoustic axis, and an additional driver attached to the enclosure. In accordance with the invention 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, and at least one port is adapted to open from the sub volume to ambient volume either to side portion or back portion of the enclosure.

Abstract: Disclosed herein are a method and device for cloaking an acoustic wave. A method for cloaking an acoustic wave according to an embodiment of the present invention includes: obtaining a target characteristic of a meta-material based on a correlation between an acoustic propagation mathematical model predetermined for the propagation of an acoustic wave and an electromagnetic wave mathematical model predetermined for an electromagnetic wave; arranging scattering media having a predetermined media density to have spatial periodicity so that the obtained target characteristic is achieved; and blocking a region including a target object from an acoustic wave by disposing the meta-material including the scattering media arranged to have spatial periodicity, to surround the region.

Abstract: A sound generating device includes a case and a diaphragm fixed to the inner surfaces of first to fourth side wall portions of the case via a support member. An air chamber surrounded by a top plate, the diaphragm, and portions of the first to fourth side wall portions is formed. A sound emitting chamber that extends between the air chamber and the atmosphere outside of the case terminates at a sound emitting hole which extends across a plurality of surfaces of the case 2.

Abstract: The present invention discloses a microspeaker enclosure with porous materials, including a microspeaker, an enclosure with the microspeaker therein, the enclosure defining a resonance space and having an upper casing and a lower casing, porous materials filled in the resonance space of the enclosure, and an anti-noise structure which prevents at least one of a collision between the porous materials, a collision between the porous materials and the enclosure, a collision between the porous materials and the microspeaker, and introduction of the porous materials into the microspeaker.

Abstract: The present invention discloses a microspeaker enclosure with porous materials, including a microspeaker, an enclosure with the microspeaker therein, the enclosure defining a resonance space and having an upper casing and a lower casing, a sound absorber arranged in the resonance space and defining a space, and porous materials filled in the space defined by the sound absorber.

Abstract: A water resistant speaker having a water-impermeable spider and an acoustic chamber in air flow communication with the underside of the spider via vents in a spider support and in a bottom panel of a basket of the speaker. The acoustic chamber is attached and sealed to the bottom of the basket. At least one hydrophobic vent is supported in the wall of the acoustic chamber or in the basket behind the spider to limit air pressure in the acoustic chamber. The acoustic chamber may have a passive radiator. The combination of a water impermeable spider and diaphragm, adjacently attached and sealed to the former, assist in preventing water from reaching the magnet assembly and voice coil. A vent in the pole piece, leading to the acoustic chamber, reduces drag on motion of the former, dust cap, and diaphragm.

Abstract: A speaker waveguide includes a first orifice arranged about a rotational axis of the waveguide, a waveguide region that extends radially outwardly from the first orifice, and a bracket region defining a second orifice and a third orifice.

Abstract: Examples are disclosed for a waveguide for a loudspeaker, the waveguide including a first and second outer shell coupled to one another, and a first and second inner shell coupled to one another and positioned within an air gap between the first and second outer shells, a plurality of sound paths being formed between an exterior surface of the first inner shell and an interior surface of the first outer shell and between an exterior surface of the second inner shell and an interior surface of the second outer shell, each of the plurality of sound paths having an equal path length in a plurality of planes.

Abstract: A loudspeaker comprising at least three first emitting heads (11) adapted to emit in a first frequency range, and at least one second emitting head (13) adapted to emit in a second frequency range, the first emitting heads (11) are located in close proximity to each other in the vertices of a virtual regular polygon with the number of vertices equal to the number of first emitting heads (11), and the second emitting head (13) is located in proximity to the geometric center of said virtual polygon, wherein the first emitting heads have conical diaphragms (14), oriented with their convex side in the direction of the listener, and the emission axes of the first emission heads are inclined at an angle (?) to a perpendicular drawn through the center of the polygon, where the angle (?) is in a range of from 5 to 25 degrees.

Abstract: A sound deflector for a wind instrument has a sound deflector plate and a device for the mounting thereof on the edge of a bell of the wind instrument. The device for mounting the deflector plate has an upper part and a lower part, which are respectively fastenable on the outer surface or the inner side of the bell edge. The upper and lower parts are connected to one another by means of a hinge. According to the invention, the lower part and upper part each have at least two nubs having rounded edges. When the upper and lower parts are brought together, the nubs of the upper part and lower parts are each arranged offset in relation to one another. The sound deflector enables fastening on instruments having bell edges of different shapes and curvatures or on music stands. The offset arrangement of the nubs on the mounting device enables a clamping fastening on a bell edge. The sound deflector according to the invention is therefore universally usable.

Abstract: A system for enhancing sound includes a support structure and one or more panels forming a panel structure. The panel structure defines a first and second portion of an oblong enclosure, both forming an approximated double ellipse profile, comprising a material having a sound reflective surface, and held by the support structure. The first portion extends between a first area proximate a first speaker driver and a second area proximate the listener. The second portion extends between a third area proximate a second speaker driver and a fourth area proximate the listener. The two portions are shaped such that sound waves emitted laterally from the first and second speaker drivers are reflected and focused toward the listener as three-dimensional sound.

Abstract: Apparatuses that operate as both a public address speaker and a wireless access point (AP) for mounting to a ceiling or wall. The compact public address access points described herein may include an AP housing, enclosing a radio (e.g., a 3×3 MIMO radio) and antenna, that is coupled to a speaker assembly including a speaker, a conical acoustic reflector positioned between a front of the speaker and the housing of the AP, and an annular region comprising a concave inner wall facing the conical acoustic reflector. Although the AP is nested atop the front of the speaker, the speaker may produce high-quality sound with accurate voice reproduction without interfering with the operation of the wireless transmission of the AP. Methods of operating and installing these apparatuses are also described.

Abstract: An enclosure for a speaker transducer can have a front housing member and a rear housing member. Some enclosures position the speaker transducer between the front housing member and the rear housing member, and spaced apart from the rear housing member to define a rear chamber positioned between the speaker transducer and the rear housing member. The rear housing member can define a longitudinal axis. A first waveguide member and a second waveguide member can be longitudinally spaced apart from each other to define an acoustic waveguide therebetween oriented transversely relative to the longitudinal axis. A port can acoustically couple the acoustic waveguide with the rear chamber. A cross-sectional area of the waveguide can expand radially outward of the port. And, the acoustic waveguide can extend circumferentially around the longitudinal axis more than 90-degrees. Some embodiments include a speaker transducer and are suitable as a headphone.

Abstract: One embodiment provides an omnidirectional loudspeaker comprising a phase plug and an acoustic resonator within the phase plug. The acoustic resonator comprises acoustic damping material.

Abstract: The present disclosure provides a speaker box, including an upper cover plate and a lower cover plate which cooperate with each other to form accommodating space and a speaker accommodated in the accommodating space, the speaker includes a diaphragm for vibrating and sounding, the diaphragm and the upper cover plate form a front cavity, the speaker box further includes a sounding channel formed by surrounding of the upper cover plate and the lower cover plate, configured to communicate the front cavity with external environment, and a sounding hole communicated with the sounding channel, the speaker is fixed on the upper cover plate, the sounding hole is provided on the lower cover plate, an extending direction of the sounding channel is perpendicular to a vibration direction of the diaphragm. By adopting the speaker of the present disclosure, the assembling yield is high and the sounding effect is good.

Abstract: A portable amplifier is disclosed. In embodiments, the portable amplifier comprises a cabinet that opens and closes on a diagonal to contain all internal components, and optimizes sound quality. In embodiments the portable amplifier can be connected to an extension cabinet in order to provide an additional speaker. The portable amplifier can function on AC or DC power, and features user-friendly lighted ports and controls. The amplifier can feature AINiCo speakers and a three-spring reverb tank. The portable amplifier can be optimized for weight and power to achieve output of about 4 to about 5 watts per pound.

Abstract: Method, source array and seismic vibro-acoustic source element for seismic data acquisition. The method includes storing in a controller a library of beam form factor sets associated with a source array and corresponding regions to be surveyed; towing the source array along survey lines over the regions to be surveyed; selecting a beam form factor set from the library to be applied to the source array for each region; and actuating the source array based on the selected set of beam form factors and a position of the source array relative to the regions. Each set of beam form factors maps to a corresponding region of an area to be surveyed.

Abstract: An omni-directional acoustic deflector includes an acoustically reflective body that has a truncated conical shape which includes a substantially conical outer surface that is configured to be disposed adjacent an acoustically radiating surface (e.g., a diaphragm) of an acoustic driver thereby to define an acoustic radiation path therebetween. The acoustically reflective body is profiled such that a cross-sectional area of the acoustic radiation path increases monotonically with respect to radial distance from a motion axis of the acoustic driver.

Abstract: An omni-directional acoustic deflector includes an acoustically reflective body having a truncated conical shape including a substantially conical outer surface, a top surface and a cone axis, the acoustically reflective body having at least one opening disposed along a circumference of the substantially conical outer surface at a cone radius associated with a pressure maximum of an acoustic resonance mode with an acoustic absorber at each such opening. Speaker systems employing the omni-directional acoustic deflector have an improved high frequency acoustic spectrum response regardless of the location of the listener with respect to the speaker system.

Abstract: A handheld device is disclosed. A housing member includes a first surface and a second surface. A first sound emitting hole is located in the first surface. A second sound emitting hole is located in the second surface. A film speaker comprises a piezoelectric element and a resin film that vibrates together with the piezoelectric element. A speaker holder comprises the film speaker disposed at an angle in the speaker holder such that the front of the resin film faces the first sound emitting hole and is tilted from the first surface of the housing member toward the second sound emitting hole.

Abstract: An apparatus for re-distributing acoustic energy. The apparatus comprises a first concave surface defined as a surface of revolution of a line or curve. This curve of revolution is rotated beyond 230 degrees and thus defines a rather small opening, which has advantages in the frequency response output. Additionally or alternatively, edges of the concave surface may be rounded to provide advantageous effects in the sound output.

Abstract: An ice resistant speaker is provided. The ice resistant speaker can be incorporated into a device comprising a housing having an outer surface and an inner surface opposite the outer surface. The ice resistant speaker comprises: an audio port at the housing, the audio port comprising: a cavity at the outer surface of the housing; an aperture through the housing, the aperture located in the cavity; and a speaker pill located in the cavity and forming a gap with sidewalls of the cavity, the speaker pill mounted in front of the aperture using one or more flexible pads; and, a speaker driver located adjacent the inner surface of the housing, and further adjacent the aperture.

Abstract: Provided are devices, systems, and methods for the testing of materials and structures. For example, the devices, systems, and methods are optionally used for the non-destructive testing of a material or structure. Furthermore, the devices, systems, and methods may optionally use a high-amplitude, air-coupled acoustic source for non-destructive testing of materials and structures.

Abstract: A display apparatus may be provided that includes a display module, a housing, at least one speaker module within the housing, and at least one reflector disposed adjacent to the at least one speaker module. The at least one reflector may have an inclined acoustic reflection surface exposed to a front side of the display module when the sounds are emitted from the at least one speaker module. The at least one speaker module may be disposed in parallel to a horizontal or vertical direction of the housing.