Entries |
Document | Title | Date |
20080212818 | AUDIO SYSTEM WITH SYNTHESIZED POSITIVE IMPEDANCE - An audio system including an audio power amplifier, a transducer electrically connected to the audio power amplifier, an enclosure coupled to the transducer, and a secondary resonant element coupled to the enclosure. An electrical feedback signal representative of the transducer current is negatively fed back to the audio power amplifier to synthesize a positive output impedance. | 09-04-2008 |
20080240483 | Child Soothing Device with a Low Frequency Sound Chamber - A child soothing device includes a frame comprising a structural support, a housing coupled to the structural support and comprising a cover with an opening, and a speaker including a speaker driver and a speaker chamber. The speaker driver has a diaphragm disposed relative to the opening in the cover for external sound wave propagation via displacement of the diaphragm, and the speaker chamber has a volume defined by the housing and in communication with the diaphragm for internal sound wave propagation via the displacement of the diaphragm. The device further includes a partition within the housing to further define the volume of the speaker chamber. The volume may include a region obliquely oriented relative to the diaphragm to support a low frequency response of the speaker. | 10-02-2008 |
20080267438 | Earphone and tuning module of speaker for the earphone - An earphone and a tuning module of a speaker for the earphone include a speaker casing and a speaker unit. The speaker casing provides a resonance chamber to receive the speaker unit. The speaker casing has a front mouth and a rear mouth. The rear mouth further provides at least a rear through hole such that characteristics of different sounds are capable of being emitted by means of size and position of said rear mouth being adjustably reset under a condition of said chamber being not changed. | 10-30-2008 |
20080317273 | FOLDED COAXIAL TRANSMISSION LINE LOUDSPEAKER - A loudspeaker has a loudspeaker driver and a first tube having a base end coupled to the driver and extending towards the rear end of the loudspeaker. A second tube of larger cross sectional dimensions extends over the first tube and loudspeaker driver and has a rear end wall spaced from the open rear end of the second tube and a front end coupled to the driver. A third, open ended tube of smaller cross-sectional dimensions than the first tube extends through a rear end wall of the second tube and into the first tube, with the front end of the third tube spaced from the base of the first tube. A folded, three segment transmission line is formed between the first and second tubes, between the second and third tubes, and through the third tube. | 12-25-2008 |
20090028369 | INFLATABLE SPEAKER ROLL - A speaker assembly includes a cone structure having an outside opening and an inside opening adjacent a sound producing driver, wherein the outside opening is larger than the inside opening. A surround is connected to the outside opening of the cone and is defined by a circular airtight bladder with an interior cavity having a predetermined interior pressure. A frame is proximate an outside diameter of the surround. | 01-29-2009 |
20090041281 | LOW-FREQUENCY SOUND ADJUSTABLE EARPHONE - A low-frequency sound adjustable earphone is disclosed which includes a housing, which has a resonance chamber and a crevice in air communication between the resonance chamber and the atmosphere, a speaker mounted inside the housing for converting an electronic voice signal into sound for amplification by the resonance chamber, and an adjustment cap, which is pivoted to the housing and rotatable to adjust the air path defined in the crevice and to further adjust the output sound. | 02-12-2009 |
20090041282 | Porting - A ported electroacoustical device uses the action of the port to provide cooling airflow across a heat producing device. The device includes a loudspeaker enclosure including a first acoustic port, and an acoustic driver, mounted in the loudspeaker enclosure. The device also includes a heat producing device. The acoustic driver and the acoustic port are constructed and arranged to coact to provide a cooling, substantially unidirectional airflow across the heat producing device, thereby transferring heat from the heat producing device. | 02-12-2009 |
20090060245 | Balanced armature with acoustic low pass filter - A balanced armature apparatus is disclosed that includes dual transducers for generating sound waves in response to electric audio signals. The dual transducers include a motor assembly coupled to a diaphragm. A housing defines an interior chamber and the motor assembly and the diaphragm are positioned within the interior chamber. A pair of acoustic output ports is located in a respective end of the housing. A low pass acoustic filter is in communication with one of the acoustic output ports that is operable to attenuate a predetermined range of frequencies from an audio signal produced by one of the diaphragms. | 03-05-2009 |
20090067658 | PORTABLE OVER-THE-EAR MINIATURE SOUND BOX DEVICE - A portable over-the-ear miniature sound box device comprises a loudspeaker, a first chamber and a second chamber. The loudspeaker is located in the first chamber. A first sound output hole of the first chamber is connected with a sound-receiving hole of the second chamber. A second sound output hole is disposed at the opposite side of the sound-receiving hole of the second chamber. A sound signal first resonates in the loudspeaker and is then sent through the first chamber to second chamber. Sound resonates again in the second chamber and is finally sent out via the second sound output hole. Because the sound signal resonates twice and is more convergent and the first resonance occurs in the loudspeaker, the bass will be thicker and more easily heard by human ears, hence solving the problem of easy divergence of the bass. | 03-12-2009 |
20090103757 | SPEAKER BOX - A speaker box is provided. The speaker box includes a flexible speaker and a housing. The flexible speaker includes an electret vibrating-film layer. The housing includes a first assembly part and a second assembly part partially connected with each other. A combining device is used to combine unconnected parts of the first assembly part and the second assembly part into a three-dimensional shape and a resonance space is formed therein. When the first assembly part and the second assembly part are not combined through the combining device, the first assembly part and the second assembly part are in flat shapes. The electret vibrating-film layer of the flexible speaker is at least located on an external side of the first assembly part or the second assembly part, or on external sides of the first assembly part and the second assembly part. | 04-23-2009 |
20090103758 | ACOUSTIC SYSTEM - An acoustic system is described for accurately reproducing sound. The acoustic system generally includes driver which produces a plurality of higher frequency pressure waves at larger amplitudes and produces lower frequency pressure waves at smaller amplitudes. A passage is provided which serves as an amplifier and resonator for the lower frequency pressure waves. Accordingly, the system accurately reproduces a large range of higher and lower frequency sounds. | 04-23-2009 |
20090169040 | DEVICES AND METHODS FOR ENHANCING THE FREQUENCY OUTPUT OF A PORTABLE AUDIO DEVICE - Disclosed are passive acoustic structures, portable audio devices configured for use with the passive acoustic structures and methods for enhancing the frequency output of a speaker of a portable device configured for use with a disclosed passive acoustic structure. The disclosed portable audio device may include an opening proximal a speaker cavity of the device, a shutter or door to open and close the opening so that the device interoperates with a docking station of a passive acoustic structure including a labyrinth or a transmission line system that may increase the frequency range of the system. For an end user to experience the music and multimedia features of a portable audio device, and in particular a mobile communication device, the above-described passive acoustic structure may provide a bass enhancement for the typically small loudspeaker of a portable audio device with no additional loudspeaker and therefore no additional circuitry. | 07-02-2009 |
20090169041 | ACOUSTIC RECONFIGURATION DEVICES AND METHODS - Disclosed is a portable audio device and a quick-disconnect passive acoustic cover. The portable audio device includes a housing and a speaker supported by the housing that have a first system frequency response. The speaker of the portable audio device has a first side and a second side associated with a first audio port and a second audio port, associated with a first acoustic load and a second acoustic load respectively. The housing is configured to removably receive the cover which is configured to redefine at least one of the first acoustic load and the second acoustic load to replace the first system frequency response with a second system frequency response. The cover provides one or more additional surrounding structures, which replace the inherent frequency response with an improved frequency response. Different embodiments of the disclosed cover provide a plurality of sound quality enhancement options to a user. | 07-02-2009 |
20090245561 | Acoustic Passive Radiating - Acoustic devices that include passive radiators. The passive radiator may include an acoustic driver. The acoustic device may be hand-held or pocket sized. | 10-01-2009 |
20090245562 | SPEAKER SYSTEM - The speaker system according to the present invention is a speaker system in which a sound is emitted into a closed space from the back surface of a speaker unit, and has characteristic that gas in the closed space is physically adsorbed by a gas adsorber obtained by adding a binder to a porous material including a plurality of grains so as to perform molding. The speaker system according to the present invention is capable of reproducing, even when a small cabinet is used, low frequency sound while suppressing reduction in sound pressure level as compared to a conventional art. | 10-01-2009 |
20090245563 | Porting - A ported electroacoustical device uses the action of the port to provide cooling airflow across a heat producing device. The device includes a loudspeaker enclosure including a first acoustic port, and an acoustic driver, mounted in the loudspeaker enclosure. The device also includes a heat producing device. The acoustic driver and the acoustic port are constructed and arranged to coact to provide a cooling, substantially unidirectional airflow across the heat producing device, thereby transferring heat from the heat producing device. | 10-01-2009 |
20090257612 | SPEAKER ASSEMBLY - A speaker assembly includes a speaker body and a resonating box. The speaker body formed by a main portion and a sound-emitting portion. The resonating box is provided within the speaker body. Both ends of the resonating box are connected to the main portion and the sound-emitting portion respectively. The resonating box is formed by connecting a plurality of resonating shells having decreasing widths. The resonating shells are made of rigid materials. Each of the resonating shells is slidingly connected with the adjacent resonating shells, so that the resonating shell is extendable between the main portion and the sound-emitting portion. Via this arrangement, in addition to amplify the music, the speaker assembly has a stress/bass effect to improve the quality of sound. | 10-15-2009 |
20090279729 | Dual-frequency coaxial earphones - A dual-frequency coaxial earphone includes a frame, a shared yoke, a high frequency speaker part, and a low frequency speaker part. The high frequency speaker part and the low frequency speaker part are coaxially arranged at inside and outside of the shared yoke, and are coaxial with a central opening of the frame. Further, a permanent magnet of the higher frequency speaker part is contrary, in polarity, to an annular magnet of the low frequency speaker part. Therefore, acoustic frequency of the low frequency speaker part can be phase-countered by passing thereof through an acoustic annular recess, so that the acoustic frequency of the low frequency speaker part has the same phase as the acoustic frequency of the high frequency speaker part and both then are output synchronally. The high frequency speaker part and the low frequency speaker part can then be separated, in acoustic frequency, from each other. This will effectively solve the problem of intermodulation of distortion for the high and low acoustic frequencies, and reduce the size of the earphone to more compact. | 11-12-2009 |
20090285431 | DIAPHRAGM WITH INTEGRATED ACOUSTICAL AND OPTICAL PROPERTIES - A multifunctional transducer diaphragm may be configured as audio speaker system for displays wherein the multifunctional transducer diaphragm is capable of polarizing light transmitted therethrough and can convert mechanical motion into acoustical energy. In a related embodiment, a display panel system may comprise a multifunctional display screen comprising a single multifunctional transducer diaphragm capable of polarizing light which converts mechanical motion into acoustical energy, simultaneously providing both display screen and audio speaker functionalities. | 11-19-2009 |
20100027828 | LOUDSPEAKER SLOTTED DUCT PORT - Provided herein is a loudspeaker system utilizing one or more ducted slot ports. In various embodiments, a ducted slot port may incorporate an acoustic low pass filter, such as a bend in the airflow path, to control midrange leakage. A ducted slot port may also minimize standing waves within the port duct and control turbulent port noise, such as by varying its cross-sectional area substantially continuously and symmetrically along the port duct's entrance-exit axis. | 02-04-2010 |
20100027829 | CIRCUIT ARRANGEMENT FOR A SOUND REPRODUCER WITH LINEARIZED SOUND TRANSMISSION - Circuit arrangement for a sound reproducer with linearized sound transmission comprising a loudspeaker ( | 02-04-2010 |
20100034411 | Apparatus incorporating an adsorbent material, and methods of making same - Apparatus for compensating for pressure changes in an acoustic transducer system includes a skeleton member having a predetermined configuration and adsorbent material having a regular structure and being supported on the skeleton member. The apparatus may include a plurality of members, each of the plurality of members having a plurality of hollows formed therein, at least one main surface of each of the plurality of members substantially facing and spaced apart from a main surface of an adjacent one of the plurality of members, and the adsorbent material may be provided within each of the plurality of hollows. | 02-11-2010 |
20100061578 | PORTABLE ELECTRONIC APPARATUS - A portable electronic apparatus including a case, a speaker, a sound box cover, a first circuit board and a second circuit board is provided. The case has a sound hole and a plurality of limiting portions disposed around the sound hole. The speaker corresponding to the sound hole is disposed in the case. The sound box cover covers the speaker to define a back sound chamber among the sound box cover, the case and the speaker. The first circuit board is disposed in the case. The second circuit board with a first surface, a second surface and a plurality of pads is disposed on the sound box cover. The second circuit board is exposed on the sound box cover with the first surface. The second circuit board electrically connects to the first circuit board and the speaker through the pads respectively disposed on the first and the second surface. | 03-11-2010 |
20100142741 | Loudspeaker - A speaker with an embedded sound enhancement module includes a magnet, a pole piece positioned within the magnet, a sleeve surrounding the pole piece, a conductive wire coil wound around the sleeve between the magnet and the pole piece, a dust cap or diaphragm attached to a circumference of the sleeve, a speaker cone surrounding the dust cap, and an enclosed chamber having an aperture to access an internal volume of the chamber and an alternative density transmission medium (ADTM) positioned within a portion of the internal volume. | 06-10-2010 |
20100172530 | SPEAKER COMPONENT FOR A PORTABLE ELECTRONIC DEVICE - A speaker component for a portable electronic device which accepts a receiver and redirects the sound emitted from the receiver toward the speaker hole in the device housing is disclosed. The receiver may be oriented such that sound is directed away from the speaker hole to reduce the footprint of the receiver within the device housing. A channel of the speaker component may redirect or port the sound to the speaker hole. Accordingly, embodiments provide more flexibility for positioning of the speaker hole and the receiver with respect to the device housing. The speaker component may also have a self-contained back volume chamber adjoining the receiver which does not include portions of the device housing or other components of the portable electronic device, thereby improving the sound quality of the sound emitted from the receiver and providing more flexibility as to the size and shape of the back volume chamber. | 07-08-2010 |
20100172531 | METHOD AND APPARATUS FOR HEARING ASSISTANCE DEVICE MICROPHONES - One embodiment of the present subject matter includes an apparatus, including: a microphone to convert sound into a signal; and an electrically adjustable shutter including conductive polymer, the shutter in acoustic communication with the microphone and configured to provide an adjustable acoustic resistance to the microphone. Variations include conductive traces adapted to apply an electric signal to the conductive polymer. In some embodiments a diaphragm in acoustic communication with the shutter configured to detect acoustic energy is included. The present subject matter also provides methods including, but not limited to a method for operating a microphone in a hearing assistance device, including measuring acoustic energy detected by a diaphragm in acoustic communication with a shutter via a conduit, and controllably adjusting an acoustic resistance of the shutter with an electric signal to change directionality of the microphone. | 07-08-2010 |
20100189296 | Thermoacoustic device - A speaker includes a base and a thermoacoustic device. The base includes a first connector, a second connector for receiving external signals, a first engaging member, and an amplifier circuit device electrically connecting to the first connector and the second connector. The thermoacoustic device includes a second engaging member and a fourth connector. The thermoacoustic device is detachably installed on the base by a detachable engagement between the first engaging member and the second engaging member and a fourth connector corresponds to the first connector of the base. | 07-29-2010 |
20100189297 | HANDHELD ELECTRONIC DEVICE HAVING HIDDEN SOUND OPENINGS OFFSET FROM AN AUDIO SOURCE - The disclosure relates to a handheld electronic device. The device comprises a case and an audio transducer. The case has a housing, a cover, an indentation, a first opening and an audio transducer. The housing has a housing surface. The cover has a cover surface with at least a portion of the cover surface being disposed adjacent at least a portion of the housing surface; an elongated channel formed therein opposite the cover surface; an insert; and a lens disposed adjacent to the insert. The indentation is formed in at least one of the housing adjacent the housing surface and the cover adjacent the cover surface and the indentation is disposed between and forms a cavity in the case between at least a portion of the housing adjacent the housing surface and at least a portion of the cover adjacent the cover surface. The cavity is elongated along at least a first axis. The first opening is formed in the case and provides fluid communication between the cavity and the channel and being located along a first axis. The audio transducer is disposed on the housing and is in fluid communication with the cavity where the audio transducer is spaced from the first opening along the first axis. In the device, the indentation and the first opening are formed in the insert; and the channel is disposed between the insert and the lens. | 07-29-2010 |
20100215201 | Light Bulb Loudspeaker and Sound System - A light bulb loudspeaker and sound system where a wireless or wire receiver, amplifier and power supply can be mounted inside of the boundary defined by a light bulb and base where the glass bulb can be used as a sound radiating diaphragm, or alternatively, the bulb can be made to move as a plunger and this act as a sound diaphragm. A transducer can convert audio from the amplifier into sound and thereby excite the glass bulb or cause it to move. A baffle can optionally be provided in the form of a lamp shade or otherwise. Different channels can provide different audio signals to different light bulb loudspeakers in the same physical area, or an electrical signal could be multiplexed. A small base station unit can transmit radio or wire signals containing audio information from an audio source such as a stereo. The filament can optionally be used as a radio receiving antenna. | 08-26-2010 |
20100254557 | SOUND REPRODUCTION APPARATUS FOR VARYING SOUND TRANSMISSION AND A CORRESPONDING METHOD THEREOF - There is provided an apparatus for sound reproduction which is able to vary transmission of sound. The apparatus includes a plurality of speaker casings, with each of the plurality of speaker casings including at least one speaker driver; and a plurality of bases for each of the plurality of speaker casings, with a top portion of each base being for securable placement of a foot of one of the plurality of speaker casings, and a bottom face of each base being for securable attachment to the bottom face of another of the plurality of bases. In a first configuration of the apparatus, the plurality of speaker casings is securely placed on the top portion of each of the plurality of bases, and independently rests on the bottom face of each base. In a second configuration of the apparatus, the plurality of speaker casings is securely placed on the top portion of each of the plurality of bases, and is attached to one another at the bottom face of each base. A corresponding method of using a sound reproduction apparatus for varying sound transmission is also provided. | 10-07-2010 |
20100254558 | LOUDSPEAKER WITH PASSIVE LOW FREQUENCY DIRECTIONAL CONTROL - A loudspeaker is provided that passively achieves a directional polar response at low frequencies with a high degree of attenuation between the front and the back of the loudspeaker. The loudspeaker | 10-07-2010 |
20100272301 | HORN LOUDSPEAKER AND A SOUND SOURCE - A horn loudspeaker, in particular for reproducing bass sound in public address systems, in which the horn ( | 10-28-2010 |
20110007922 | SPEAKER DIAPHRAGM, SPEAKER, AND ELECTRONIC EQUIPMENT AND MOBILE DEVICE USING THE SPEAKER - A speaker diaphragm of the present invention is formed by mixing polylactic acid as a plant-derived resin, bamboo fibers and a natural binder. It is thereby possible to realize a speaker diaphragm capable of obtaining sufficient sound velocity, while having low environmental load and high sound quality. | 01-13-2011 |
20110026751 | High Acoustic Compliance Device for Loudspeaker Systems - There is provided a device for propagating acoustic vibrations through an environment. The device includes a low pressure chamber containing a volume of reduced pressure relative to the environment. A movable wall is formed on the low pressure chamber, said movable wall having an ambient side facing the environment and a low pressure side facing the volume of reduced pressure. The movable wall is sufficiently biased towards the environment and away from the volume of reduced pressure such that the movable wall can freely vibrate back and forth relative to the volume of reduced pressure in response to acoustic vibrations impinging on the ambient side of the movable wall. The device has the acoustical compliance of a device of far larger volume. | 02-03-2011 |
20110116670 | SPEAKER SYSTEM WITH AT LEAST TWO CODIRECTIONAL CHANNELS - A speaker system ( | 05-19-2011 |
20110150259 | PORTABLE AUDIO SYSTEM HAVING WAVEGUIDE STRUCTURE - An apparatus includes a housing. A waveguide is located within the housing. The waveguide includes a first subsection that bends around a first axis and has a first cross-sectional area with an aspect ratio that is substantially different from unity. A second subsection bends around a second axis that is non-parallel to the first axis and includes a second cross-sectional area with an aspect ratio that is substantially different from unity. A third subsection acoustically couples the first subsection to the second subsection. The third subsection includes a third cross-sectional area with an aspect ratio that varies between the first aspect ratio and the second aspect ratio. | 06-23-2011 |
20110158448 | SPEAKERBOX - An electro-acoustic communications unit ( | 06-30-2011 |
20110211721 | ADAPTIVE NOISE GENERATING DEVICE - An acoustic adaptive noise generating device in the form of a flat panel loudspeaker is suitable for increasing people's powers of concentration in acoustically difficult surroundings. The adaptive noise generating device includes a carrier panel, an actuator arranged on the carrier panel. A control device is connected to the actuator and permits adjustment of noise signals emitted by the actuator. | 09-01-2011 |
20120027239 | ELECTROACOUSTIC TRANSDUCER - An electroacoustic transducer includes a diaphragm, an electroacoustic transducer unit having the diaphragm, and an air chamber having the diaphragm of the electroacoustic transducer unit and having a variable volume in response to vibration of the diaphragm. The air chamber has a sound pressure detector detecting a sound pressure in the air chamber and a volume adjuster driven by the output signals from the sound pressure detector, changing the volume of the air chamber in response to the output signals, and controlling the acoustic impedance of the air chamber. A control system from the sound pressure detector to the volume adjuster configures a feedback control system increasing the volume of the air chamber with an increase in the sound pressure in the air chamber. | 02-02-2012 |
20120063626 | SPEAKER WITH ACOUSTIC CHAMBER - A speaker with acoustic chamber is provided. The speaker includes a main body and an acoustic chamber fixed to the main body. The acoustic chamber can be converted between a collapsed state and an expanded state. The acoustic chamber is drawn to the expanded state to increase the volume of the acoustic chamber and is collapsed to the collapsed state to decrease the volume of the acoustic chamber. When the acoustic chamber is drawn to the expanded state, the quality of the sound output by the speaker is improved. | 03-15-2012 |
20120148081 | ELECTROMAGNETIC INTERFERENCE SHIELDS WITH PIEZOS - Methods and apparatus for improving the acoustical performance associated with a speaker, such as a piezoelectric speaker, are disclosed. According to one aspect, an apparatus includes a substrate, a can mounted on the substrate, and a piezoelectric speaker arrangement. The piezoelectric speaker arrangement is at least partially mounted on the can. In one embodiment, the substrate is a printed circuit board (PCB) and the can is an electromagnetic interference (EMI) shielding can. | 06-14-2012 |
20120155687 | ELECTRONIC DEVICE WITH COVER HAVING INTERNAL PROTRUDING PORTIONS FOR DISPERSING OF SOUND - An exemplary electronic device includes a box, a speaker, and a micro structure. The box includes a shell and a cover disposed on the shell. The speaker is sandwiched between the shell and the cover. The micro structure includes a plurality of flat-bottomed protruding portions, a plurality of first pyramidal protruding portions, and a plurality of second pyramidal protruding portions. | 06-21-2012 |
20120224735 | System and Method for Reducing Baffle Vibration - Adjustments to an electro-acoustic transducer may be made to match the performance of a second electro-acoustic transducer such that a net inertial force generated by movement of the electro-acoustic transducers' diaphragms are substantially zero. Adjustments may include adjusting a moving mass of one of the elector-acoustic transducers. Adjustments may include applying an equalization to one of the electro-acoustic transducers. | 09-06-2012 |
20120257776 | Apparatus for Use in Portable Devices - An apparatus configured to acoustically process an acoustic signal for a transducer, and to provide a physical interface for a further apparatus within which the apparatus is located. | 10-11-2012 |
20120275632 | EARPHONE - An improved earphone comprises a shield member consisting of a front shield part and a rear shield part, and a speaker unit. The front shield part is provided with a cover section with an egg-shaped profile, and has a front side which has a little concave outward shape. The rear shield part extends and converges from the front shield part gradually to form a circular cone section, and further extends to form a connecting tube section. The speaker unit is disposed in the receiving room of the front shield part, and has a center deviates from the center of the front shield. In this way, the earphone can be plugged to the ear tightly, and the speaker unit is capable of aligning with the external auditory canal precisely to concentrate the sound and lessen volume and base of the sound being lost for enhancing the sound quality. | 11-01-2012 |
20120288129 | Open-back woofer baffle with resonance control ports - A preferred embodiment of an open-back extended frequency range woofer baffle having ports to control longitudinal acoustic resonances. | 11-15-2012 |
20120328141 | PORTING - A ported electroacoustical device that uses the action of the port to provide cooling airflow across a heat producing device. The device includes a loudspeaker enclosure including a first acoustic port, an acoustic driver, mounted in the loudspeaker enclosure. The device also includes a heat producing device. The acoustic driver and the acoustic port are constructed and arranged to coact to provide a cooling, substantially unidirectional airflow across the heat producing device, thereby transferring heat from the heat producing device. | 12-27-2012 |
20130004007 | Open-Baffle Loudspeaker - The invention relates to a loudspeaker which includes one or more drivers, a front panel and a further panel extending rearwardly therefrom. The rearwardly extending panel is typically offset towards one side of the front panel and includes an outer edge with at least portion which is curved. The provision of the arrangement of the said panels provides significant improvement in terms of the sound quality which can be achieved from the loudspeaker. | 01-03-2013 |
20130083954 | Method and Apparatus for Construction of an Acoustic Module Backvolume - Apparatus, systems and methods for providing a speaker with a backvolume that can be used in a portable electronic device are disclosed. The backvolume can be arranged to fit into a small, irregularly shaped space, thereby efficiently utilizing available space. In one embodiment, the backvolume can have a reduced wall thickness. | 04-04-2013 |
20130101150 | Speaker Device For Mobile Terminal - A speaker device for use in a mobile terminal includes a speaker frame with a speaker unit mounted therein, and a frame cover provided at the rear side of the speaker frame to form a resonance space between the speaker frame and the frame cover. Sound that is output in a forward direction of the speaker unit is emitted to a front space of the speaker frame, and sound that is output to the rear of the speaker unit is emitted through the resonance space. The speaker device provides the resonance space at the rear side of the speaker frame to reinforce the output of midrange and bass tones, thereby reproducing the original sound as accurately as possible. The speaker device enables a user to enjoy vivid sound when reproducing a multimedia file or viewing a digital multimedia broadcast (DMB) program on a small-sized device, such as a mobile terminal. | 04-25-2013 |
20130136290 | EARPHONE WITH TUNABLE LOW PITCH - An earphone with tunable low pitch comprises a main member and a stirring member, wherein the main member has a chamber inside receiving a loud speaker, a low pitch room formed between the main member and the loud speaker, at least a fixing air hole provided at the rear side of the main member, a high pitch room formed between the front side of the main member and the loud speaker, at least a regulative air hole is provided at the high pitch room; the stirring member, which is pivotally joined to the pivot hole, is designed as a disk to close the regulative air hole or as airflow baffles to close corresponding airflow passages gradually such that the regulative air hole or the airflow passages can be partly or fully blocked by the stirring member to change the speed of the air entering or leaving the high pitch room and result in good low frequency resonant effect. | 05-30-2013 |
20130148835 | Speaker With Spheroidal Acoustic Emitter Housing - An improved speaker in which a single electro-acoustic driver is mounted in a sound emitter cabinet with a spheroidal rear acoustic emitter wall, with the driver face exposed and mounted on a driver-mounting face of the cabinet and the driver body enclosed in the spheroid cabinet. The spheroidal rear emitter wall is spaced from and surrounds the driver body to receive the back wave and to responsively emit audible, clear sound from the cabinet wall to the surrounding listening area in complement to the primary sound wave from the driver face. The speaker cabinet is rigidly supported via the driver-mounting face such that the spheroidal rear emitter wall is suspended in air out of contact with surrounding surfaces. | 06-13-2013 |
20130259285 | Loudspeaker system, Audio Recovery Imaging Amplifier - A loudspeaker system designed to minimize the enclosure to fit in furniture and exceed high end fidelity sound found in larger and more complex systems. The system presented herein incorporates a sealed enclosure utilizing two small diameter audio drivers, 3″ or larger depending on application, and a passive radiator, ported into a bass chamber with a tuned port. The two drivers are wired 180 degrees out of phase, aligned on the central axis, but facing opposite directions, resulting in a push-pull alignment. With the sealing of the enclosure, the internal driver becomes a static engine that projects the image of the sound stage while reducing the mechanical excursion, allowing higher SPL levels and more accurate reproduction of all frequencies in a small enclosure. | 10-03-2013 |
20130294632 | Panel-form loudspeaker - Disclosed is a panel-form loudspeaker. The panel-form loudspeaker includes a resonant mode sound radiating panel, a case with a vibrating plate attached on the sound radiating panel, and a number of transducers separated from each other for forming a vibration and connected with the vibrating plate for transferring the vibration to the vibrating plate to cause the sound radiating panel to resonate and radiate an acoustic output. The vibrating plate has a number of vibrating portions mounting on the sound radiating panel and spaced from each other for fixing the transducers and a number of bending portions extending from the vibrating portions away from the sound radiating panel. | 11-07-2013 |
20130315429 | PORTABLE AUDIO SYSTEM HAVING WAVEGUIDE STRUCTURE - An audio system includes a housing and an acoustic exit that exits the housing, and has a configuration that facilitates the grasping of the housing with a plurality of fingers from a single human hand. The acoustic exit is located adjacent an exterior surface of the housing such that the shape of the exit together with the exterior surface facilitates grasping of the housing with a plurality of fingers and the thumb from the single human hand and the acoustic exit exits a back surface of the housing such that the plurality of fingers can be inserted into the exit while the thumb of the same hand can rest on at least one of the top surface and the front surface of the housing. | 11-28-2013 |
20140064539 | VIBRATION-REDUCING PASSIVE RADIATORS - An audio system includes a passive radiator that is attached to one end of a lever arm. The other end of the lever arm is attached to a mass that serves to move out of phase of the passive radiator to cancel mechanical vibrations of the passive radiator, but without significantly affecting audio output. The lever arm is attached to a mechanical ground, which may be the enclosure on which the passive radiator is mounted. A system may use multiple lever arms to reduce rocking of the passive radiator. | 03-06-2014 |
20140098982 | PORTABLE APPARATUS - A portable apparatus including a main body and a receiver is provided. The main body has a surface, an active sound hole and a passive sound hole. The active sound hole and the passive sound hole are both disposed at the surface of the main body. The receiver is disposed inside the main body and arranged for emitting a first sound wave and a second sound wave with the same amplitude and frequency but opposite transmission directions. The first sound wave is transmitted out of the main body via the active sound hole and the second sound wave is guided in the main body and transmitted out of the main body via the passive sound hole. | 04-10-2014 |
20140133684 | Acoustic Device - One embodiment of the invention discloses an acoustic device having a housing and a speaker unit accommodated in the housing. The speaker unit forms a front volume and a back volume together with the housing. The housing includes an extra volume communicating with the back volume and a sound channel communicated with the front volume. The extra volume is isolated from the sound channel. The invention provides an acoustic device with enlarged back volume for improving low frequency sound quality. | 05-15-2014 |
20140140558 | ACTIVE PROTECTION FOR ACOUSTIC DEVICE - A device comprises a housing, an acoustic component coupled to an exterior of the device through an acoustic passage in the housing, and an actuated mechanism operable to close the acoustic passage between the acoustic component and the housing. The actuated mechanism is operable to close the acoustic passage in response to a control signal, where the control signal is indicative of a pressure differential transmittable from the exterior of the device through the acoustic passage to the acoustic component. | 05-22-2014 |
20140140559 | Compact Low Frequency Audio Transducer - A rotary reciprocating acoustic transducer for producing sound in response to an applied electrical signal has a ported tubular housing having a generally cylindrical chamber with an interior lumen which is generally symmetrical about a central axis and opposing first and second linear reciprocating electrodynamic motors mounted over the tubular housing member's first and second open end, with a reciprocating rotatable transducer vane assembly with first and second rotating vanes projecting radially away from a central, axially aligned shaft driven by the first and second linear reciprocating motors. | 05-22-2014 |
20140198940 | Tunable Earphone - A tunable earphone includes a speaker for making sound, a shell receiving the speaker and defining a resonance cavity therein, and a tunable element rotatably and removably mounted on the shell. The shell has a top thereof recessed downward to form a receiving cavity. A supporting plate is formed at a bottom of the receiving cavity. A damping vent is opened in the supporting plate to connect the resonance cavity with the receiving cavity. The tunable element defines a through hole passing therethrough and aligned with the damping vent of the shell. A damping plate is integrally molded on a bottom of the tunable element. The damping plate is located in the receiving cavity and against the supporting plate to separate between the damping vent and the through hole for smoothening the frequency response of the sound pressure level in the resonance cavity while the speaker making sound. | 07-17-2014 |
20140270310 | ACOUSTIC WAVEGUIDE FOR CONFERENCE PHONE REALTIME COMMUNICATIONS - In one embodiment, an apparatus includes a network interface, an acoustic waveguide, and an arrangement. The network interface is arranged to communicate on a network, and is further configured to obtain a signal from the network. The arrangement is configured to transform the signal into an acoustic wave and to provide the acoustic wave to the acoustic waveguide. The acoustic waveguide is configured to direct the acoustic wave in a path. | 09-18-2014 |
20140286519 | MICROPHONE ARRAY WITH REAR VENTING - Microphone arrays (MAs) are described that position and vent microphones so that performance of a noise suppression system coupled to the microphone array is enhanced. The MA includes at least two physical microphones to receive acoustic signals. The physical microphones make use of a common rear vent (actual or virtual) that samples a common pressure source. The MA includes a physical directional microphone configuration and a virtual directional microphone configuration. By making the input to the rear vents of the microphones (actual or virtual) as similar as possible, the real-world filter to be modeled becomes much simpler to model using an adaptive filter. | 09-25-2014 |
20140348369 | DECOUPLED DRIVE UNIT FOR A LOUDSPEAKER ENCLOSURE - A loudspeaker enclosure defined by one or more panels housing a drive unit. The drive unit includes a coil, a diaphragm, and a magnet. The magnet is decoupled from the one or more panels of the loudspeaker enclosure. Sound is generated by the movement of the diaphragm and complementary movement of the magnet, on application of an appropriate electrical signal to the coil. The moving diaphragm acts against a first volume of air within the enclosure, while the movement of a surface coupled to the magnet, acts against a second air volume, different from the first volume. The surface coupled to the magnet is decoupled from the one or more panels of the loudspeaker enclosure. | 11-27-2014 |
20140376759 | LOUDSPEAKER HAVING CARBON NANOTUBES - A loudspeaker includes a cover and a base. The cover together with the base defines a high frequency space, a middle frequency space, and a low frequency space. Micro holes are defined in the high frequency space, the middle frequency space, and the low frequency space. Height of the middle frequency space is larger than that of the high frequency space and smaller than that of the low frequency space. A drive, a pole, and a carbon nanotube film are located in the high, middle, and low frequency spaces. The drive connects with the carbon nanotube film to make the carbon nanotube film produce sound waves. The sound waves transmit through the micro holes. | 12-25-2014 |
20150036860 | Audio Device for Altering Water Structure - An audio device adapted for altering the structure of water is provided. The device includes a rigid, enclosed cabinet with speakers mounted to the cabinet. The speakers are positioned on opposing walls, facing each other, within the cavity of the cabinet and a watertight container is placed between the speakers. The exterior surface of the container rests directly against with the cone or the voice coil of the speakers, which are connected to an external sound system. Because the container is flush against the surface of the speakers, vibrations from the sound waves generated by the cone or the voice coil are transferred directly through the water. The sound waves alter the structure of the water from a liquid form to a liquid crystalline form, such that the liquid crystalline takes coherent geometric shapes. | 02-05-2015 |
20150049895 | Expandable Speaker - A speaker apparatus or system with a user selectably expandable chamber is provided. The chamber in its expanded state enhances the speaker's acoustical properties. The chamber in its collapsed (in physical dimension or shape) state provides a thin profile for increased portability or low profile mounted solutions. The speaker is compatible with current electronics. | 02-19-2015 |
20150063621 | Speaker Assembly - A speaker assembly provides a system for reproducing low frequency sound and for directing the sound generated both toward and away from a listener, or in any direction desired, by use of an acoustic dipole. The speaker assembly beneficially provides a significantly improved low frequency sound quality, while reducing sound and vibration transmitted to an adjacent space via an airborne or structure-borne pathway. The speaker assembly also beneficially provides for a suitable use in a plurality of environments, including, without limitation, an outdoor environment, a residential setting, or a professional application. | 03-05-2015 |
20150071474 | TRANSMISSION LINE LOUDSPEAKER - An electro-acoustic driver including an acoustic waveguide includes an enclosure, an acoustic transmission line formed within the enclosure, and a plurality of acoustic transducers contained within the enclosure and disposed along a length of the acoustic transmission line. Each acoustic transducer is configured to emit acoustic energy directly into the acoustic transmission line at two separated locations along the length of the acoustic transmission line. | 03-12-2015 |
20150131836 | SOUND GUIDING DEVICE AND SOUND GUIDING MEMBER IN MOBILE TERMINAL DEVICE - It is possible to enable sound, such as music or words, to be caught clearly without raising the sound volume in particular in the use of a mobile terminal device. In a mobile terminal device provided with a speaker on a rear surface side, a sound guiding device that guides sound generated by the speaker in a front direction has a case that covers the speaker when attached to the mobile terminal device. A sound guiding section that guides sound generated by the speaker roughly in the front direction and a sounding port through which the guided sound is emit bed to the outside are provided at a position of the case corresponding to the speaker of the mobile terminal device when the case is attached to the mobile terminal device. | 05-14-2015 |
20150304747 | SPEAKER MODULE - The present invention provides a speaker module comprising a peripheral frame and speaker units housed in the peripheral frame, and the peripheral frame is provided with sound holes in communication with the outside, a front acoustic cavity in communication with the sound holes is defined between one side of the speaker units and the peripheral frame, and a rear acoustic cavity is defined between the peripheral frame and another side of the speaker units away from the front acoustic cavity; in which the speaker units are provided in plurality, and the rear acoustic cavity is divided into the same number of rear sub-cavities as that of the speaker units, and each of the speaker units corresponds to one of the rear sub-cavities and is in communication with its corresponding rear sub-cavity. The above structure makes it easier to adjust the acoustic performance and improves the stereo effect of the product. | 10-22-2015 |
20150319515 | RING RADIATOR COMPRESSION DRIVER FEATURES - A speaker includes an enclosure including a peripheral sound wave exit. A compression driver is connected to the speaker enclosure. Sound waves are peripherally spread from the sound wave exit of the speaker enclosure. | 11-05-2015 |
20150373451 | DISPLAY DEVICE - A display device is disclosed. In one aspect, the device includes a display module, a first cover configured to support the display module and a second cover placed opposed to the first cover and selectively detachably coupled to the first cover. The device also includes a volume changer configured to connect the first and second covers and define an inner space, having a volume, with the first and second covers, wherein the volume changer has an adjustable length extending from the second cover to the first cover, and wherein the volume changer is configured to change the volume of the inner space when the length is adjusted. The device further includes at least one exciter mounted in the inner space and configured to generate sound. | 12-24-2015 |
20160021447 | Speaker Box - A speaker box is disclosed. The speaker box includes a housing including a bottom wall, and a speaker unit accommodated in the housing. The speaker unit includes a magnetic circuit unit having a lower plate, a magnet on the lower plate, an upper plate on the magnet, and a magnetic gap. The lower plate abuts against the bottom wall for forming a space communicated with the magnetic gap. Thus, the air pressure in the magnetic gap is balanced, and the low frequency sound performance is improved. | 01-21-2016 |
20160073194 | ACOUSTIC MESH AND METHODS OF USE FOR ELECTRONIC DEVICES - An acoustically permeable material is disposed within an aperture of an electronic device to provide aesthetic appeal for the electronic device and protection for an acoustic device mounted within the electronic device. A stiffener is used in conjunction with the acoustically permeable material to improve its ability to resist permanent mechanical deformation from external forces. In some embodiments the stiffener may have multiple cavities enabling improved isolation between multiple acoustic devices within the same aperture. Other methods of employing acoustically permeable materials are disclosed that improve the aesthetic appeal, acoustic performance and/or manufacturability of the electronic device. | 03-10-2016 |
20160127823 | SPEAKER STRUCTURE - A speaker structure includes a speaker box, a speaker unit, and an elastic component. An air pressure inside the speaker box is lower than that outside the speaker box. The speaker unit is disposed on the speaker box and includes a first vibrating assembly. The elastic component is disposed in the speaker box and connected to the first vibrating assembly and the speaker box in the speaker unit. When the speaker unit operates, the first vibrating assembly of the speaker unit vibrates, and the elastic component produces a pre-force correspondingly, the total pressure of the pre-force and the air pressure inside the speaker box equals to the air pressure outside the speaker box to balance the first vibrating assembly at an equilibrium position. | 05-05-2016 |