Abstract: An integrated loudspeaker assembly along with associated methods and systems for enhancing audio output from a consumer electronic device including such an integrated loudspeaker assembly are disclosed. More particularly an integrated loudspeaker assembly configured to utilize the enclosure of an associated consumer electronic device for back volume is disclosed. Methods and systems for optimizing the audio performance of a consumer electronic device with an integrated loudspeaker assembly are also disclosed.

Abstract: An audio speaker having a voicecoil running along a diaphragm surface, and a magnetic array, e.g., a Halbach array, configured to direct a magnetic field toward the voicecoil to drive the diaphragm and generate sound. In an embodiment, multiple Halbach arrays are used to drive the same voicecoil winding or to drive separate, respective voicecoil windings on the diaphragm surface. Other embodiments are also described and claimed.

Abstract: A case for a portable electronic device includes an enclosed, elongated space extending within the case from an opening in an interior surface of the case. The opening corresponds to the location of a microphone in the device. The enclosed space is tapered to an increasingly smaller cross-section as it extends away from the opening. A first edge of the enclosed space aligns along most of its length with an exterior surface of the case. A screen covers a second opening in the exterior surface of the case along the first edge of the elongated space and provides an acoustic resistance between the elongated space and air outside the case through the second opening. A gasket located at the first opening couples the elongated space to the microphone of the electronic device.

Abstract: A loudspeaker baffle that provides variable sound patterns is described. The baffle may support non-low frequency sound sources and a waveguide to provide varying sound beam patterns. The baffle may include a center mount adapted to receive a plurality of audio outputs and a plurality of low frequency apertures to receive a plurality low frequency output. The waveguide may be formed from a front face of the baffle. The front face may be intermediate the center mount and the low frequency apertures. The front face may include a continuously varying waveguide surface with a first waveguide portion adjacent a first audio output of the plurality of audio outputs providing a first sound pattern and a second waveguide portion adjacent a second audio output of the plurality of audio outputs providing a second sound pattern that is different than the first sound pattern.

Abstract: Low frequency alarm tones emitted by life safety devices are more like to notify sleeping children and the elderly. Disclosed herein is a life safety device equipped with a novel, compact, quarter-wave, folded resonant cavity which significantly increases the low frequency (400-700 Hz square wave) acoustic efficiency of an audio output transducer when the folded resonant cavity is acoustically coupled to the transducer forming an audio output apparatus. The folded resonant cavity is comprised of undulating, annular, acoustic passages to significantly reduce the length of the resonant cavity, thereby permitting the audio output apparatus to fit within the housing of conventional size life safety devices such as, but not limited to, residential and commercial smoke alarms and carbon monoxide alarms. Battery powered embodiments of the audio output apparatus comprising a folded resonant cavity passed audibility tests for low frequency alarm tones in smoke alarms specified by UL217.

Abstract: An acoustic device having a housing and an acoustic transducer is disclosed. The housing has a transducer space for the acoustic transducer, and a back volume space. The back volume is filled with a sound adsorber material. The sound adsorber material in the back volume space is configured to virtually increase the size of the back volume space, and shift the resonant frequency of the back volume space. The acoustic chamber for the acoustic transducer and the sound adsorber material is integral to the split-shell housing of the acoustic device. The sound adsorber material is retained in a portion of the acoustic chamber by an acoustically permeable material that facilitates gas exchange within the back volume space, and between the sound adsorber material and the transducer space. The acoustically permeable material is configured in different arrangements to facilitate the gas exchange.

Abstract: A vibration actuator includes: a movable element that has a magnet and moves reciprocatingly in a rectilinear manner; first and second coil sections arranged so as to surround the magnet; a housing for accommodating the movable element and the first and second coil sections; and a weight attached to the housing.

Abstract: An in-line sound module for a modular stack light system provides electrical and mechanical connectors to allow it to be placed anywhere in the stack. Axial orientation of the audio transducer and a flexible jumpering system allow preservation of central connectors between modules. In-line configuration permits multiple sound modules to be used in a stack light and to be teamed with different beacon modules. In one embodiment the in-line sound module may also include lamps to provide beacon functionality.

Abstract: An external sound box includes a connecting member and a sound box. The connecting member includes a sound passage and is selectively attachable to a surface of an electronic device to cover a sounding hole of the electronic device. The sound box is mounted to the connecting member. The sound box defines a resonant chamber communicating with the sound passage and a sounding output hole. Sound generated by the electronic device moves from the sounding hole into the sound passage and the sound box. The sounding passage and the sound box are configured so that the sound from the sounding hole resonates before exiting the sound output hole with increased volume.

Abstract: The infrasound generating device based on a displacement-feedback type vibration exciter comprises a displacement-feedback type vibration exciter system, an infrasound generating chamber (3) and a laser vibrometer (1); the displacement feedback mechanism is adopted in the vibration exciter (2). The piston (31) is driven by the vibration exciter to move in a sinusoidal manner in the cavity (35) of the airtight infrasound generating chamber (3) and the standard infrasonic pressure signal with low harmonic distortion can be achieved. The displacement of the moving part (22) of the vibration exciter (2) can be measured by the laser vibrometer (1) through the measurement beam (15) injecting into the vibration exciter (2) through the optical channel running through the vibration exciter and the standard infrasonic pressure can also be obtained. The value of the standard sound pressure produced by the infrasound generating chamber is calculated.

Abstract: In one embodiment, an apparatus for testing sound transducers includes a test socket having at least one acoustic generator and at least one sound monitoring device integrated therein. In one embodiment, the test socket includes a well for holding the sound transducer during test, the well being in communication with the at least one acoustic generator and the at least one sound receiving device.

Abstract: A directional acoustic device that has an acoustic source or an acoustic receiver, and a conduit to which the acoustic source or acoustic receiver is acoustically coupled and within which acoustic energy travels in a propagation direction from the acoustic source or to the acoustic receiver, the conduit having finite extent at which the conduit structure ends. The conduit has a radiating portion that has a radiating surface with leak openings that define controlled leaks through which acoustic energy radiated from the source into the conduit can leak to the outside environment or through which acoustic energy in the outside environment can leak into the conduit. The only path for acoustic energy in the conduit to reach the external environment or acoustic energy in the external environment to enter the conduit is through the controlled leaks.

Abstract: The present invention provides an improved speaker structure, which includes a speaker body, a resonance body and at least one sound guiding portion. The resonance body includes a resonance film and a resonance film frame. The sound guiding portion includes a first sound guiding member, a second sound guiding member and a back frame unit. The speaker structure forms a sealed sound chamber by combining the speaker body, the resonance body and the at least one sound guiding portion. When the speaker body generates a front sound wave and a guiding sound wave, the front sound wave is transmitted within the sound chamber to the resonance film to enhance low frequency sound effect, and the guiding sound wave is transmitted within the resonance cavity and forms a back sound wave, thus reducing noise in the sound region and enabling better extension of the sound wave towards low frequency range.

Abstract: An earphone adapted to be worn in a user's ear has a body having a front face. There is a speaker in the front face of the body. A radially projecting brim surrounds the front face, the brim having an elongated shape configured fit in the concha of the user's ear, with portions of the rearward face of the brim engaged by the tragus and the antitragus of the user's ear.

Abstract: A system includes: a tension member having a first end and a second end, where the first end of the tension member is connected to a first loading member and the second end of the tension member is connected to a second loading member; a first actuator configured to translate the first loading member, such that a tensile load is applied to the tension member along a first direction; a second actuator configured to translate the second loading member in two or more second directions that are substantially transverse to the first direction; and a control system that is configured to control the second actuator, such that the second loading member oscillates between the two or more second directions, where the oscillation of the second loading member causes the tension member to vibrate at a frequency.

Abstract: An earphone device includes a housing having a driver unit, and a sound guide tube mounted on a front surface of the housing to protrude from the front surface, in which the sound guide tube is disposed at a position deviated from a center position of the housing.

Abstract: An earpiece including an external surface having a first fixed configuration disposable within the outer ear and having a passage adapted for retention of an in ear device a portion of which extends outwardly to releasably couple to an earplug adjacent the earpiece, the earpiece heatable to achieve a moldable condition which allows reconfiguration of the external surface by engagement with the outer ear to dispose the external surface in a second fixed configuration in greater conformity to the outer ear.

Abstract: Earphone apparatus (10) comprising: a body (20) configured to be inserted at least in part into an auditory canal of a user's ear, the body (20) housing a driver (30) and defining a passageway (40) connecting the driver (30) to an opening (50) in the body (20) for allowing sound generated by the driver (30) to pass into the auditory canal of the user's ear; and a sensing microphone (60) coupled to the body (20) for providing a feedback signal to a signal processor, the sensing microphone (60) comprising a sensing element (62)(62?)(62?) positioned to sense sound present in the auditory canal of the user's ear; wherein the sensing element (62) (62?)(62?) is spaced from the driver (30).

Abstract: An acoustic transducer includes a sound-producing member at least partially disposed within the first magnetic flux gap region between the magnetic poles. The sound-producing assemblage is magnetically excited through a magnetic circuit that passes from a location outside the magnetic flux gap region to inside the magnetic flux region through an air gap. The moving member is controllably movable under the influence of at least one varying magnetic field, and its movement is constrained by a unique combination of mechanical restraints and magnetic restraints imposed upon the moving member by the interaction of a plurality of magnetic fields.

Abstract: The audio resonance device contains a base member having a box shape with an open top side, a resonance element inside the base member having stacked ceramic layers, and at least two contact pieces on a top side, a cover member sealing the open top of the base member, and a number of elastic elements, each contacting a contact piece of the resonance element, and having an end extending through the cover member and contacting a portable appliance for picking up audio vibration from the portable appliance and delivering the audio vibration to the resonance element. The resonance element resonates with the audio vibration, and the base member provides a resonant chamber so that the audio quality from the portable appliance is enhanced. The portable appliance is not required of any modification such as opening holes.

Abstract: An easy assembled and detached touch includes a pen body having a hollow portion, a touch end, a first opening, a second opening; the hollow portion having an oblong shape and penetrating through a front and a rear side thereof; the first opening and second opening is opened at an upper side of the pen body and is communicated to the hollow portion; the touch end having a conductive head; a sound guiding unit being a protrusion having a size approximately matched to that of the hollow portion; a sound path for guiding sound from one end to another end of the sound guiding unit; in assembly state; the sound path having one end coupled to an electronic device; and an inserting unit formed at the lateral side of the sound guiding unit which can be inserted into an insertion hole at a lateral side of the audio device.

Abstract: An annular diaphragm compression driver for electro-acoustic conversion has an annular diaphragm, which bears a moving coil, and a compression driver housing with a closed housing base. Opposite the housing base is a sound wave routing element having a sound discharge channel. The compression driver also has an annular magnet system unit, which has an annular magnet gap (M) and a compression chamber, adjoining the magnet gap (M), for the annular diaphragm. The open exit end of the sound discharge channel is in slot form and its entry start is annular. The sound path between the compression chamber and the entry start contains an annular collecting space. The collecting space and the sound discharge channel contain a central sound guidance body having a portion which merges to match the slot-like exit end. The sound discharge channel is formed between the sound guidance body and the sound wave routing element.

Abstract: An acoustic transducer may comprise a sound source, a throat connected to the sound source, and a horn connected to the throat. The horn may be arranged on a wall, wherein the throat is designed such that a path of the sound from the sound source to an interface between the throat and the horn is shorter in a region close to the wall than at a region that is remote from the wall.

Abstract: A SONAR system for use with a robotic vacuum having SONAR emitters and receivers thereon. The SONAR system comprises a waveguide or horn located in front of the emitters and receivers that can improve the overall target resolution and reduce the number of “dead zones” where targets are not easily resolved.

Abstract: An apparatus of the present disclosure enhances the audio/visual experience of a portable digital device, and comprises a lens positioning slot, a lens storage compartment, a passive audio amplifier, a receiving station.

Abstract: A circuit for operating loudspeakers includes a first, second, third and fourth loudspeaker circuit, having one input each for injecting a signal and one output each for connecting a loudspeaker input. The loudspeaker circuits are designed to amplify the injected signal and to provide the amplified signal at the outputs thereof. The loudspeaker circuits can, for example, be used for a 2.1 sound system. The three channels for a 2.1 sound system can be implemented by an amplifier circuit with four loudspeaker circuits, one loudspeaker circuit each being required for the two stereo channels left and right. A subwoofer channel can be driven differentially by two loudspeaker circuits. The stereo channels are, by contrast, only still connected to one loudspeaker circuit each, and so the stereo channels require at least one further common ground cable.

Abstract: The present invention relates to a loudspeaker including a first driver, which is configured to produce a first frequency band and a corresponding first acoustic axis, a second driver, which is configured to produce a second frequency band, which is different from the first frequency band but may overlap in a crossover region, and which second frequency band has a second acoustic axis, and an enclosure enclosing said drivers and comprising a three dimensional wave guide positioned on a front surface of the enclosure and around the first driver.

Abstract: A sub woofer for in-ground installation and a method of installation. The sub woofer has a cylindrical enclosure or housing having a driver, electronics and a band pass filter. The driver cone is coaxial with the axis of the cylindrical housing. A port tube assembly having a tuned port tube and a resilient elbow interface is attached to an end wall of the housing in an eccentric position with the port tube projecting vertically and terminating at a canopy. The installation requires placing the enclosure in an excavation and positioning the housing and port assembly so a predetermined above ground spacing exists between the upper end of the above ground port tube and grade.

Abstract: The disclosure provides a speaker-connector module and a handheld electronic device. The handheld electronic device includes a body and a speaker-connector module. The body has an opening. The speaker-connector module is assembled in the body and correspondingly disposed to the opening. The speaker-connector module includes a housing, a speaker and an electrical connector. The housing has a major sound passage, wherein the major sound passage has a major input end and a major output end. The speaker is assembled in the housing and has a sound outlet surface, wherein the major input end is communicated with the sound outlet surface. The electrical connector is disposed in the major sound passage and adjacent to the speaker, and the major input end is connected to the electrical connector.

Abstract: A fitting provided for earbud-type personal audio speakers may be formed as a homogeneous, integral component molded from an elastomeric polymer, such as silicone, urethane, or other elastomeric resins. A sleeve fitted to the speaker engages the fitting to the speaker, while ribs extending from the sleeve terminate in flutes conformal to an ear canal of a user. Axial insertion of the fitting and speaker into an ear of a user results in localized deflection of flutes and ribs in order to accommodate size and shape of an ear canal, resulting in transmission of sound from the speaker directly through the sleeve into an ear canal of a user, while also permitting environmental sounds to pass along a parallel path over the outside of the sleeve, between the ribs.

Abstract: Method, user terminal and computer program product for controlling audio signals at the user device during a communication session between the user device and a remote node, in which a primary audio signal is received at audio input means of the user device for transmission to the remote node in the communication session. It is determined whether the user device is operating in (i) a first mode in which secondary audio signals output from the user device are likely to disturb the primary audio signal received at the audio input means, or (ii) a second mode in which secondary audio signals output from the user device are not likely to disturb the primary audio signal received at the audio input means.

Abstract: A directional waveguide array apparatus can transmit and/or receive airborne or fluid-borne audio with the appropriate selection of transducers. The present invention advances directional waveguide arrays by allowing construction of a directional audio device with desired frequency bandwidths, array patterns, and gain by appropriate geometric configurations of the array of waveguide channel ports, as well as dimensioning and configuration of waveguide channel and chamber parameters. Embodiments of the present invention enable increased immunity to environmental noises, temperature, and humidity; low cost of construction; high reliability; simplicity of operation; very low power consumption; real-time steering of directivity (interference) pattern; wide range of audio powers that can be transmitted or received; and interchangeable transducer types.

Abstract: A flat panel loudspeaker with such an emission characteristic is obtained which, in the event of the flat panel loudspeaker being set up inversely, provides an improved listening result in that a loudspeaker is provided within the housing, and a sound conduction is configured such that sound from the loudspeaker is conducted outward via an acoustic aperture within the housing for undirected emission.

Abstract: A speaker box and a speaker device that can be manufactured at low cost and that provide a sound-absorbing effect. A speaker box of a speaker device includes a baffle, four intermediate plates, and a rear plate. The baffle plate has a speaker mount hole at the center. Each intermediate plate has a hole. The intermediate plates are stacked such that they are alternately reversed or rotated so that the holes in the adjacent intermediate plates communicate with each other while the holes are shifted from with each other. A hollow space with a sound-absorbing effect is formed by the holes in the speaker box.

Abstract: A passive acoustic booster attachment for a mobile media device is disclosed, the attachment including an attaching portion, and a passive acoustic boosting portion extending from the attaching portion. The attaching portion attaches the passive acoustic booster attachment to the mobile media device. The passive acoustic boosting portion includes an acoustic waveguide, the acoustic waveguide being a conduit capable of guiding sound waves from at least one speaker of the mobile media device towards a listener. In some embodiments, the attaching portion serves as a case that holds and secures the entire perimeter of the mobile media device. In some embodiments, the attaching portion is a clip that can attach to a mobile media device. By guiding the sound waves produced by the speakers of the mobile media device, the passive acoustic booster attachment provides an enhanced listening experience.

Abstract: A method for making a thermoacoustic module is disclosed. An insulating substrate and a sound wave generator are provided. A conductive paste is screen printed on the insulating substrate to form a first patterned conductive paste layer. The sound wave generator is placed on the first patterned conductive paste layer and at least partially suspended above the insulating substrate by the patterned conductive paste layer.

Abstract: An electronic device includes an internal speaker module and an external sound box detachably applied to the internal speaker module. The valve is resisted to the opening to cover the opening of the internal speaker module. When external sound box is applied to the internal speaker module, the connector is magnetically attracted with the magnetic attracter, while the valve is magnetically repelled from the connector and moves away from the opening to open the opening, thereby the external sound chamber is communicating with the internal sound chamber.

Abstract: An acoustic transformer includes at least one outer boundary wall. A plurality of inner walls are disposed within the outer boundary wall. The outer boundary wall and the inner walls define a substantially annular input opening divided by at least some of the inner walls into a plurality of circumferentially-spaced input sections. Each of the input sections has an inner circumferential side and an outer circumferential side. A substantially rectangular output opening is divided by at least some of the inner walls into a plurality of output sections. Each of a plurality of acoustic paths interconnects a respective one of the input sections with a respective one of the output sections. Each of the paths has a substantially equal path length and a substantially equal expansion rate.

Abstract: The present invention allows for the further enhancement of a low pitch range with a simple structure without increasing the size. The present invention is provided with: a pipe (102) open one end side and the other end side; a speaker unit (104) that is coaxial with the pipe (102), arranged at the one end side of the pipe (102), and driven on the basis of an audio signal; and an edge-cum-diaphragm (102B) that is coaxial with the pipe (102), installed at the other end side of the pipe (102), and vibrates in response to a sound wave that passes through the pipe (102). While the pipe (102) functions as a resonance tube by being excited to vibration with the sound wave that is radiated from the speaker unit (104) and passes through the pipe (102), the edge-cum-diaphragm (102B) functions as a passive radiator by vibrating in response to the sound wave that passes through the pipe (102).

Abstract: Disclosed is a microspeaker with an inner resonance chamber, more particularly a microspeaker with an inner resonance chamber which improves quality of sound and enables slim and compact design of the microspeaker by blocking rearward sound generated at the rear side of the vibration plate to prevent interference of a rearward sound with a forward sound generated at the front side of a vibration plate and installing a chamber with a specific volume within the microspeaker to allow the rearward sound to cause resonance.

Abstract: The invention regards a hearing device with two or more microphone units each having a conduit leading from a respective sound inlet in the hearing-device housing to a respective transducer, wherein the lengths of the conduits may differ without causing a difference in the frequency characteristics of the microphone units and wherein ultrasonic frequencies may be dampened, while at the same time providing higher freedom in the physical layout of the hearing device. This is achieved in that each conduit comprises a chamber and a pipe forming a resonator, and in that the frequencies of resonance (f1, f2) of the resonators are equal.

Abstract: The present invention relates to a loudspeaker (1; 1?; 1?) with a loudspeaker housing (2; 2?), a basket (3) held in the loudspeaker housing (2; 2?) and bearing a permanent magnet (9), a coil (91) arranged in a constant magnetic field generated by the permanent magnet (9) and connected with a diaphragm (5), and at least one heat pipe (10) with a heating zone (Z1) and cooling zone (Z3), wherein the heating zone (Z1) is arranged on the permanent magnet (9), and the cooling zone (Z3) on the loudspeaker housing (2; 2?). The present invention further relates to the use of such a loudspeaker for actively extinguishing or influencing sound waves, and a noise control system (100) for exhaust systems of a vehicle powered by an internal combustion engine with such a loudspeaker (1; 1?, 1?).

Abstract: A loudspeaker having a vented enclosure with at least one tuning port includes a fan inside the vented enclosure, which is positioned to produce airflow for cooling the magnetic assembly of the loudspeaker's transducer. Airflow within said vented enclosure is produced such that air within the enclosure is exchanged with outside air through the at least one tuning port. Typically, the vented enclosure will have two tuning ports wherein outside air drawn into the enclosure through one of the tuning ports is circulated out through the other tuning port. Preferably, the outside air drawn in through one tuning port is circulated directly around the transducer magnetic assembly for greatest heat dissipation.

Abstract: A loudspeaker assembly, including an acoustic waveguide; an acoustic driver mounted in the waveguide so that a first surface radiates sound waves into the waveguide so that the sound waves are radiated from the waveguide; and an acoustic volume acoustically coupled to the acoustic waveguide for increasing the amplitude of the sound waves radiated from the acoustic waveguide.

Abstract: Acoustic waveguides are disclosed for mounting to a conduit. The acoustic waveguides provide a mounting area that minimizes the effect of the mount on the acoustic wave traveling through the waveguide while providing an effective seal, even under high pressure conditions.

Abstract: A telescopic loudspeaker includes an extendable telescopic body (1) responsible for housing a loudspeaker (2) for generating sound from a input audio signal and for creating a inner resonance chamber (2) of volume V0 when the telescopic body (1) is retracted and of volume V1 when the telescopic body (1) is extended, V1>V0 being met. The telescopic body (1) includes a support base (15); of hollow bodies (11,12,13) with decreasing transversal sections and coupleable to one another, the section decreasing progressively from the body (11) closest to the base (15) up to the body (13) furthest from the base (15); and a gasket (8) between each pair of consecutive bodies (11,12,13) of the telescopic body (1) for sealing the air chamber inside the enclosure of the telescopic loudspeaker.

Abstract: An audio driver including a diaphragm with a first side and a second side. The diaphragm is coupled to a transducer element on the second side and is arranged to radiate sound. The transducer element converts an electrical input signal into movement of the diaphragm. The diaphragm is arranged such that a part of the diaphragm at least partly forms a cavity at the second side of an air conduit is coupled to the cavity. The air conduit has a first opening into the cavity and a second opening outside of the cavity. The air conduit and cavity form a resonator which has a resonance frequency that is less than half a free air acoustic resonance frequency of the audio driver.

Abstract: This invention provides an acoustic waveguide with a continuous least-energy-surface formed from an upper vertical control curve, a lower vertical control curve, right horizontal control curve and a left horizontal control curve. In addition, a circular throat end and a non-elliptical closed control curve form a mouth such that the continuous least-energy-surface is coincident with the six control curves.

Abstract: An ear speaker device includes an electroacoustic transducer including a housing mounted at a predetermined position of listener's head, a speaker unit mounted on one surface in the housing, and positioned away from an entrance of the listener's external acoustic meatus for a predetermined distance when the housing is mounted on the listener's head, and a tubular duct extended so as to allow a sound generated by the housing in the inner space thereof to reach the vicinity of the entrance of the listener's external acoustic meatus, and a hole for emitting sound of the duct is oriented to the opposite direction with respect to the entrance of the external acoustic meatus; and a mounting part used for mounting the electroacoustic transducer on the listener's head in a manner that the predetermined distance is provided between the speaker unit and the entrance of the listener's external acoustic meatus.

Abstract: A mobile communication device is provided. The mobile communication device includes a terminal body, and a speaker module located in the terminal body. The speaker module includes an enclosure located in the terminal body, the enclosure defining a chamber therein, and a speaker having a front surface and a rear surface, the speaker being located in the enclosure such that the front surface of the speaker is exposed from the enclosure and the rear surface thereof is positioned within the chamber, to allow a sound generated from the rear surface to resonate within the chamber. A mutual interference between the sound generated from the front side of the sound emission part and the sound emitted from the rear side thereof can be reduced to thereby improve the performance of the middle and low sound.