| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 381338000 | With tubular waveguide or resonant element | 43 |
| 20090010469 | Low Profile loudspeaker - A loudspeaker includes a toroidal shaped housing and at least one driver positioned within the housing. The driver is mounted within an arcuate enclosure such that a forward portion of the driver transmits sound beyond the enclosure and the rearward portion of the driver is substantially confined within the enclosure. | 01-08-2009 |
| 20090016555 | Steerable acoustic waveguide - A steerable acoustic waveguide apparatus includes plural plates arranged in one or more linear arrays. Steering of an acoustic beam radiated from the waveguide apparatus may be achieved through differential delays of acoustic signals resulting from differences in timing, frequency, or mode or resulting from differences in physical attributes of the plates. In one aspect, where the apparatus is used with a target that is confined by a conduit such as a pipe, a longitudinal plane for the conduit intersects the linear array, an array plane for the linear array has a conduit orientation relative to the longitudinal plane, and the conduit orientation is substantially perpendicular or substantially parallel. The waveguide apparatus may serve as a thermal buffer and may simplify access to an acoustic path in a device such as an ultrasonic flowmeter. | 01-15-2009 |
| 20090154750 | Wave Guide Unit - The present invention concerns a waveguide unit, for use with a transducer unit, and in particular transducer of the dome type, where the wave guide unit is substantially circular, and suitable to be arranged around the transducer, where the wave guide unit has a front side on which front side means are provided for reflecting the sound waves from the transducer, and a substantially flat backside, and where substantially centrally in the unit an aperture is provided which aperture is suitable for accommodating a transducer unit, and the side of said aperture connects the front and back sides, where said waveguide comprises one or more diffraction edges arranged concentric with the circular shape of the unit on said front side of the unit, and where adjacent on both sides of said one or more diffraction edges, substantially flat conical surfaces are provided. | 06-18-2009 |
| 20090161900 | MICROPHONE ASSEMBLY FOR MINIMIZING ACOUSTIC FEEDBACK FROM A LOUDSPEAKER - A microphone assembly for desktop communication systems utilizes a directional microphones in a desktop conferencing system without exposing the microphone to unfavorable mechanical or acoustic influence. The microphones is built into the front portion of the base of the system, in a mechanically controlled and robust way. The microphone assembly maximizes microphone sensitivity in the direction of a near end user while simultaneously minimizing microphone sensitivity in the direction of the loudspeaker. | 06-25-2009 |
| 20090208047 | EARSET ASSEMBLY HAVING ACOUSTIC WAVEGUIDE - An earpiece may be used to detect sounds from an ear canal of a user. The earpiece may include a microphone assembly and an acoustic pathway that is at least partially defined by a hollow elongated member. The acoustic pathway fluidly couples the microphone assembly with an ear canal of the user when the earpiece is positioned with respect to the ear of the user. Sounds produced by the user travel from the ear canal through the acoustic pathway for detection by the microphone assembly. Also, the hollow elongated member behaves as an acoustic waveguide to amplify a desired frequency and/or attenuate other, less desirable, frequencies of the sounds produced by the user. | 08-20-2009 |
| 20090274329 | Passive Directional Acoustical Radiating - An acoustic apparatus, including an acoustic driver, acoustically coupled to a pipe to radiate acoustic energy into the pipe. The pipe includes an elongated opening along at least a portion of the length of the pipe through which acoustic energy is radiated to the environment. The radiating is characterized by a volume velocity. The pipe and the opening are configured so that the volume velocity is substantially constant along the length of the pipe. | 11-05-2009 |
| 20100092019 | WAVEGUIDE ELECTROACOUSTICAL TRANSDUCING - A waveguide system for radiating sound waves. The system includes a low loss waveguide for transmitting sound waves, having walls are tapered so that said cross-sectional area of the exit end is less than the cross-sectional area of the inlet end. In a second aspect of the invention, a waveguide for radiating sound waves, has segments of length approximately equal to | 04-15-2010 |
| 20100177920 | A MICRO-SPEAKER - There is provided multiple embodiments of a micro-speaker that reproduces audio signals at a low resonant frequency, which correspondingly allows for low frequency reproduction of audio signals by the micro-speaker. The various embodiments of the micro-speaker may enable usage of spiders with larger areas such that mechanical compliance of the spider is increased. | 07-15-2010 |
| 20100183180 | Speaker Apparatus - A speaker apparatus is provide, which includes a casing, a speaker disposed in the casing, and a one-way inlet valve and a one-way outlet valve disposed in the casing for introducing and discharging air so as to balance pressure inside the casing, thereby enabling an air cushion generated by the speaker to timely dissipate without interfering with air cushions subsequently generated to thus be more capable of reproducing sound with high fidelity. | 07-22-2010 |
| 20100329494 | Apparatus And Method - An apparatus and method of providing an apparatus, the apparatus including: a loudspeaker configured to convert an electrical input signal into an acoustic output signal; and carbon nanohorn material wherein the carbon nanohorn material is positioned so as to be exposed to the acoustic output signal. | 12-30-2010 |
| 20110019853 | MULTI-DIRECTIONAL SOUND EMISSION MEANS AND MULTI-DIRECTIONAL SOUND EMISSION SYSTEM - A multi-directional sound emission means and a system having same are disclosed. The system comprises a speaker body and sound emission devices coupled to both ends of the speaker body. The sound emission devices each include a sound emission means for directionally emitting sound towards multiple directions. The sound emission means includes a base, a loudspeaker disposed on the base, and a plurality of hollow mechanical sound conducting elements. The loudspeaker has an opening where the sound is emitted. Each hollow mechanical sound conducting element has an inner opening end and an exterior opening end opposite to the inner opening end. The exterior opening ends are directed towards desired multiple directions, respectively. The inner opening ends are in sound communication with the opening of the loudspeaker such that sound from the loudspeaker is emitted along the desired multiple directions through the sound conducting elements. | 01-27-2011 |
| 20110069856 | Modular Acoustic Horns and Horn Arrays - A modular horn type loudspeaker and a modular horn array formed of modular loudspeakers. An acoustic horn includes a first acoustic module. The first acoustic module includes a first acoustic driver and a first acoustic duct, for conducting acoustic energy from the first acoustic driver. The first acoustic duct has a first opening through which acoustic energy is radiated. The first acoustic duct is characterized by a first centerline. A second acoustic module includes a second acoustic driver and a second acoustic duct, for conducting acoustic energy from the acoustic driver. The second acoustic duct has a second opening through which acoustic energy is radiated. The second acoustic duct is characterized by a second centerline. The first module and the second module are configured to be positioned and held in place so that the first and second openings are aligned to form a substantially continuous diffraction slot and so that the first and second centerlines are normal to an arc and intersect at a first one of a plurality of angles. | 03-24-2011 |
| 20110096950 | ACOUSTIC TRAVELING WAVE TUBE SYSTEM AND METHOD FOR FORMING AND PROPAGATING ACOUSTIC WAVES - The present invention is an acoustic traveling wave tube system for propagating a directional acoustic wave comprising an acoustic traveling wave tube having a cylindrical shape with a load on one end of the tube, a plurality of excitation rings positioned around a circumference of the tube and spaced at predetermined intervals along a length of the tube and a microprocessor having a database containing a plurality of waveforms representative of acoustic signals. The microprocessor energizes one of the plurality of excitation rings to form an acoustic wave, sequentially energizes one or more of the remaining excitation rings along the length of the tube to amplify the acoustic wave as the acoustic wave travels along the length of the tube, and propagates the acoustic wave from an end of the tube opposite the load as a shaped directional acoustic wave. | 04-28-2011 |
| 20110158446 | THERMOACOUSTIC DEVICE WITH FLEXIBLE FASTENER AND LOUDSPEAKER USING THE SAME - A thermoacoustic device includes a base, a plurality of first fasteners, at least one first electrode, at least one second electrode and a sound wave generator. Each of the first fasteners includes a body engaging with the base and a flexible element extending from the body. The at least one first electrode has a first end and a second end. The first end engages with the flexible element of the plurality of first fasteners, and the second end is secured on the base. The at least one second electrode has a third end and a fourth end. The third end engages with the flexible element of the plurality of first fasteners, and the fourth end is secured on the base. The sound wave generator is electrically connected to the at least one first electrode and the at least one second electrode. | 06-30-2011 |
| 20110158447 | 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. | 06-30-2011 |
| 20110170725 | ELECTRONIC DEVICE DISPOSING STRUCTURE - An electronic device disposing structure includes a stand having a position limiting area, a sound receiving channel on the stand and including a sound inlet hole at a distal surface of the stand, a sound outlet hole at a bottom surface of the position limiting area, and a passage portion for interconnecting the sound inlet and outlet holes, and a sound emitting channel on the stand and including a sound outlet hole at the distal surface of the stand, a sound inlet hole at the bottom surface of the position limiting area, and a passage portion for interconnecting the sound outlet and inlet holes. The electronic device disposing structure combines a portable electronic device into the position limiting area, such that a microphone and a speaker respond to sound receiving and emitting channels respectively to achieve a hand-free effect and a sound amplification without requiring a circuit design. | 07-14-2011 |
| 20110243359 | SPEAKER SYSTEM WITH SUBWOOFER - A speaker system includes an enclosure defining a resonance chamber, a loudspeaker received in the resonance chamber, and a sound wave reflecting member. The enclosure includes a front panel and a base. The loudspeaker is exposed at the front panel. The base includes a back panel facing the front panel, an inner tube, and an outer tube. The back panel defines a back bass port. The inner tube and the outer tube extend from the back panel and are received in the resonance chamber. The inner tube surrounds the back bass port. The outer tube surrounds the inner tube. The sound wave reflecting member is coupled with the outer tube and the inner tube. The sound wave reflecting member, the outer tube, and the inner tube cooperatively form a resonator. The resonator communicates with the resonance chamber and the back bass port. | 10-06-2011 |
| 20110274305 | CONSTANT COVERAGE WAVEGUIDE - 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. | 11-10-2011 |
| 20110274306 | MULTIPLE APERTURE SPEAKER ASSEMBLY - Methods and apparatus are provided for waveguide structures and speaker assemblies. In one embodiment, a waveguide may include an input aperture configured to receive a sound signal from a sound source, and a plurality of isolated sound paths having substantially equal path lengths. Each isolated sound path may be formed within a housing of the waveguide and formed with a curved path to reduce the depth of the waveguide. The waveguide may include a plurality of plugs, wherein each plug divides an output of one of the isolated sound paths into a plurality of output sound paths and defines a plurality of output apertures of the waveguide. Each output sound path is characterized by a reduced width relative to the output of the isolated sound path, the plurality of output apertures configured to output a combined sound signal based, at least in part, on the plurality of sound signals. | 11-10-2011 |
| 20120237070 | Passive Directional Acoustic Radiating - An acoustic apparatus, including an acoustic driver, acoustically coupled to a pipe to radiate acoustic energy into the pipe. The pipe includes an elongated opening along at least a portion of the length of the pipe through which acoustic energy is radiated to the environment. The radiating is characterized by a volume velocity. The pipe and the opening are configured so that the volume velocity is substantially constant along the length of the pipe. | 09-20-2012 |
| 20130028458 | SPEAKER APPARATUS AND AUDIO OUTPUT METHOD - 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 ( | 01-31-2013 |
| 20130034255 | WAVEGUIDE ELECTROACOUSTICAL TRANSDUCING - 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. | 02-07-2013 |
| 20130129134 | TELESCOPIC LOUDSPEAKER - A telescopic loudspeaker includes an extendable telescopic body ( | 05-23-2013 |
| 20130148834 | MICROSPEAKER WITH INNER RESONANCE CHAMBER - 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. | 06-13-2013 |
| 20130170686 | MOBILE MEDIA DEVICE CASE/ATTACHMENT FOR PROVIDING PASSIVE ACOUSTIC BOOSTING - 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. | 07-04-2013 |
| 20130170687 | LOUDSPEAKER SYSTEM WITH IMPROVED SOUND - A loudspeaker device ( | 07-04-2013 |
| 20130329930 | ACOUSTIC WAVEGUIDE ASSEMBLIES - 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. | 12-12-2013 |
| 20140105439 | LOUDSPEAKER WITH IMPROVED THERMAL LOAD CAPACITY - The present invention relates to a loudspeaker ( | 04-17-2014 |
| 20140369543 | Loudspeaker with a wave guide - 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. In accordance with the invention the three dimensional waveguide comprises an acoustically selectively transparent portion which is acoustically essentially reflecting to sound waves of the first frequency band propagating in a direction angled to the first acoustic axis, the waveguide portion is essentially transparent to sound waves of the second frequency band propagating in the direction of the second acoustic axis through the waveguide portion, and in that the second driver is positioned inside the enclosure behind the acoustically selectively transparent portion. | 12-18-2014 |
| 20150131835 | EASY ASSEMBLED AND DETACHED TOUCH PEN WITH SOUND EMISSION PATHS - 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. | 05-14-2015 |
| 20150139465 | Audio Resonance Device - 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. | 05-21-2015 |
| 20150319523 | SPEAKER SYSTEM - When an amplitude of vibration of a first diaphragm of a first speaker unit vibrated by applying a first and a correction AC signals having a frequency in a first frequency band to the first speaker unit is equalized to that of a second diaphragm of a second speaker unit vibrated by applying a second AC signal being the same as the first AC signal to the second speaker unit being the same as the first speaker unit attached to a closed type cabinet having the same internal volume as a speaker cabinet, a sound pressure reproduced by the first diaphragm is equal to or lower than that reproduced by the second diaphragm when a third AC signal having a frequency of a minimum resonance frequency or higher of the closed type cabinet determined by the internal volume thereof and the caliber of the second speaker unit is applied to the second speaker unit. | 11-05-2015 |
| 20150365749 | Device for Hearing Own Voice - An apparatus for assisting a vocalist to hear the vocalist's own voice has a mixing chamber defining a first passage for communicating with an ear canal of a vocalist and an opening that is open to atmosphere. The mixing chamber includes a ball and socket joint having a passage in communication with the first passage. An ear piece is connected to the ball and socket joint and has a passage in communication with the first passage. A stabilizing ear retainer shaped to engage the outer ear of the vocalist is connected to the mixing chamber and mounts and retains the apparatus to the vocalist's ear. A voice tube is configured to extend from proximate a mouth of the vocalist and is connected to the mixing chamber. The voice tube defines a passage having an opening for collecting vocal sound from the vocalist an opening in communication with the first passage. | 12-17-2015 |
| 20150382103 | Phi-Based Enclosure for Speaker Systems - A speaker system with an enclosure having a pathway is presented. The speaker system includes an electro-acoustic transducer that generates sounds according to an audio input. The speaker system also includes an enclosure having an interior pathway defined by a wall that is curved substantially as a spiral. The speaker system is configured such that the sound generated by the electro-acoustic transducer travels along at least a portion of the curved pathway before leaving the enclosure. | 12-31-2015 |
| 20160007106 | MICROPHONE RUBBER BOOT - A multi-sided microphone boot having a front side, a back side, a first lateral side, a second lateral side, and a bottom side. The front side can have a sound tube extending from at least an internal microphone receiving compartment to an external surface of the front side. The back side can form a microphone opening extending from the internal microphone receiving compartment to at least an external surface of the back side. The first lateral side can include at least one protrusion extending from an external surface of the first lateral side. The second lateral side can include at least one protrusion extending from an external surface of the second lateral side. The protrusions can assist in reducing the contact area and/or the number of contacts between the microphone boot and a microphone receiving compartment within a telecommunication device. | 01-07-2016 |
| 20160014493 | IN-EAR-CANAL HEADSET ASSEMBLY | 01-14-2016 |
| 20160021439 | LOUDSPEAKER SYSTEM WITH IMPROVED SOUND - A loudspeaker device ( | 01-21-2016 |
| 20160021446 | Acoustic Device - An acoustic device having a neck loop that is constructed and arranged to be worn around the neck. The neck loop includes housing that defines an acoustic volume, a first acoustic driver located at a first distal end of the housing and acoustically coupled to the housing, and a second acoustic driver located at a second distal end of the housing, opposite the first distal end and acoustically coupled to the housing. | 01-21-2016 |
| 20160037253 | PORTABLE SPEAKER SYSTEM - A portable speaker assembly includes a body, a speaker, and a membrane. The body includes a first plate spaced from a second plate, and a surface of the body defines a port having a first cross-sectional area. The speaker is disposed along a surface of the first plate and extends toward the second plate. The membrane is configured to direct sound waves toward the port and is positioned between the first plate and the second plate. The membrane has a second cross-sectional area that is larger than the first cross-sectional area of the port. | 02-04-2016 |
| 20160044409 | MICROPHONE MODULE WITH SOUND PIPE - A microphone module has a substrate with an aperture to allow sound waves to pass through the substrate, a lid mounted to the substrate to define a first interior volume, a microphone mounted to the substrate within the first interior volume, and a housing coupled to the substrate and covering the aperture. The housing forms a second interior volume and includes an acoustic port configured to allow sound to enter the second interior volume. The module further includes a pipe extending from the acoustic port in the housing, and at least one exterior interface pad outside of the second interior volume. The pipe has an open end to receive sound waves and direct them toward the acoustic port in the housing. Moreover, the at least one exterior interface pad electrically couples to the microphone. | 02-11-2016 |
| 20160073195 | LOUDSPEAKER WITH IMPROVED DIRECTIONAL BEHAVIOR AND REDUCTION OF ACOUSTICAL INTERFERENCE - Loudspeaker systems and assemblies are provided in which mid-frequency producing drivers are provided on opposing sides of a high frequency source comprising a linear high-frequency source connected to a waveguide. Crossover circuitry is provided such that the acoustic output from the mid-frequency drivers overlaps with that of the high-frequency source over an intermediate frequency range associated with acoustic interference between the mid-frequency producing drivers. In some embodiments, the mid-frequency producing drivers are recessed behind the output of the waveguide, and optionally angled outwardly from the waveguide, in order decrease the distance therebetween. | 03-10-2016 |
| 20160127812 | LOUDSPEAKER SYSTEM WITH IMPROVED SOUND - A loudspeaker device ( | 05-05-2016 |
| 20170236508 | FLEXIBLE WAVEGUIDE BAND | 08-17-2017 |
