400 results about "Tweeter" patented technology

A loudspeaker configuration capable of generating stereophonic sound separation from relatively loudspeaker drivers that are not necessarily widely separated. For example, such a loudspeaker configuration can be used to generate relatively good sound separation from a single chassis, such as a single speaker box, a boom box, a clock radio or the like. This can advantageously save space in many environments. One embodiment uses four mid-tweeter speaker drivers and a bass driver. The four mid-tweeter speaker drivers are arranged facing outward approximately 90 degrees apart from each other. A speaker driver facing the listener reproduces a mid channel signal, for example, L+R. A speaker driver facing away from the listener reproduces the same mid channel signal or a delayed version of the mid channel signal. A left facing speaker reproduces a side channel, for example, L−R. A right facing speaker reproduces a side channel, for example, R−L. The acoustic combination of the sound produced by the four speaker drivers creates a virtual left and right loudspeaker as experienced by the listener.

An image display device (10) has a main display body (1) provided with a thin display unit (2), a low-frequency loudspeaker (woofer) (3) and two middle and high frequency loudspeakers (tweeters) (4a, 4b) and a stand (8) supporting the main display body (1). The stand (8) has a base (6) being just opposite at its top surface to a duct outlet of the woofer (3) , thereby sound emitted from the duct can be constantly absorbed by and reflected from the base and provided with the stable quality without influence of the floor's material. A housing containing the first loudspeaker and a pair of the second loudspeakers has a plurality of through holes formed in a first area corresponding to an aperture of each loudspeaker (3, 4a, 4b) and a plurality of blind holes formed in a second area surrounding the first area, wherein the second area for the first loudspeaker is different in peripheral shape and / or size from the second area for each of the second pair of loudspeakers. The above arrangement can attain an improved sound field expanding effect by using one woofer and two tweeters, attaining the sophisticated design of the loudspeaker system.

The present invention discloses methods and systems for providing very high quality audio playback using all-digital wireless paths from a source to speaker transducers and / or headphones located anywhere within a distance allowed by the FCC. Each speaker has a separate digital amplifier dedicated to each transducer within it (e.g. woofer, tweeter). The present invention also discloses a system that provides a data link capable of sending an all-digital, full-bandwidth, signal from the original digital source material to each separate transducer in the system without using sound degrading lossy data compression. This system is designed to read, broadcast, and reproduce with accurate audio loudspeaker time-alignment (<100 uS) and low overall latency (less than 7 milliseconds) all popular audio formats in full-bandwidth and without data compression in the effort to maintain the integrity of the entire audio signal, wherein the audio signal may include an accompaniment to a player piano.

A beam control system and method. The system includes an illuminator for providing a first beam of electromagnetic energy at a first wavelength; a source for providing a second beam of electromagnetic energy at a second wavelength; and an arrangement for compensating wavefront errors in the second beam using a bias representative of a comparison between the first wavelength and the second wavelength. In the illustrative embodiment, the arrangement includes a processor which corrects wavefront errors using a bias representative of a difference between said first wavelength and said second wavelength. In the disclosed application, a target wavefront sensor is included and the laser is a high-energy laser beam. The wavefront errors include a chromatic aberration and the errors are compensated using a deformable mirror and a correction algorithm executed by an adaptive optics processor. In one alternative embodiment, the errors are compensated using an optical aberration corrector. The aberration corrector may be a holographic optical element or other suitable device. In another alternative embodiment, the errors are corrected with the above embodiment in combination with the use of “woofer” and “tweeter” correcting elements with the woofer being a long stroke low frequency element and the tweeter being a short stroke high frequency element.

A surround sound system and method involving a surround sound tower; a base plate; and a structure for positioning the surround sound tower on the base plate, the surround sound tower being mounted on, and normal to, the positioning structure for customizing sound direction and constructive interference patterns by interactively positioning the sound tower and / or at least one sound tower and by modular usage of tweeters, economizing floor space, especially in a home theater environment. The positioning structure may have a structure for indicating an angular rotation of the surround sound tower relative to the base plate and a structure for facilitating rotation of the angular rotation indicating structure.

An apparatus, system, and method for an entertainment chair provide a high fidelity audio system incorporated in an entertainment chair. The entertainment chair is relatively independent from an acoustical environment in which it is placed, and enables repeatable high fidelity sound with a wide variety of recording types and qualities. The entertainment chair has high transparency and excellent imaging. Mid-range speakers and / or tweeters are placed in or near the armrests, forward of the seat occupant, and are oriented to face inward and upward. In one embodiment the mid-range and / or tweeters also angle rearward. A subwoofer is placed in the backrest and a shaker is placed in the seat bottom. The subwoofer and shaker are separately tunable through a control panel ergonomically placed at a forward end of an arm rest. The control panel includes a universal iPod dock. Other inputs may also be connected to the entertainment chair.

An image display device has a main display body provided with a thin display unit, a low-frequency loudspeaker (woofer) and two middle and high frequency loudspeakers (tweeters) and a stand supporting the main display body. The stand has a base being just opposite at its top surface to a duct outlet of the woofer, thereby sound emitted from the duct can be constantly absorbed by and reflected from the base. A housing containing the first loudspeaker and a pair of the second loudspeakers has a plurality of through holes formed in a first area corresponding to an aperture of each loudspeaker and a plurality of blind holes formed in a second area surrounding the first area, wherein the second area for the first loudspeaker is different in peripheral shape and / or size from the second area for each of the second pair of loudspeakers.

A coincident source stereo speaker in accordance with the present invention includes a high-frequency component (tweeter) and a low-frequency component (woofer) that are separated by a sound channel. The tweeter emits a first sound pattern directly outward from the speaker, with the sound pattern having a corresponding high frequency center axis. The sound channel is located between the tweeter and woofer and is symmetrically oriented around the high-frequency component. The woofer emits a second sound pattern into the sound channel for re-direction out of the speaker. With this configuration, the second sound pattern has an effective low frequency center axis that is coincident with the high frequency center axis. As a result, the tweeter and woofer exhibit co-axial performance characteristics, even though they are not physically located co-axially.

An improved electrically conductive membrane pump / transducer. The electrically conductive pump / transducer includes an array of electrically conductive membrane pumps that combine to generate a desired sound by moving a membrane (such as a membrane of PDMS), a piston, and / or by the use of pressurized airflow in the absence of such a membrane or piston. The electrically conductive membranes in the array can be, for example, graphene-polymer membranes. The electrically conductive pump can include mid-range, tweeter, and sub-woofer speakers.

A multi-drive in-ear headset including moving-coil bass comprises a housing. The housing has at least one tweeter and a bass driver. The sound waves emitted by the bass driver pass through a second-order acoustic low-pass filter consisting of a cavity and a small hole on the back of the diaphragm and then through a second second-order acoustics low-pass filter consisting of the housing cavity and the sound guiding tube, and then are fused with the sound waves generated by a high-frequency driver and output to the human ears. The beneficial effects are as follows: 1, the two second-order acoustic low-pass filters are used to attenuate the high-frequency components emitted by the low-frequency driver, and reduce the interference with the sound waves emitted by high-frequency driver; 2, the structure is simple, the headset is conducive to manufacturing, the production cost is lowered, product competition in the market is benefited.

The invention provides an intelligent control device and control method for an automobile horn. The intelligent control device comprises an automobile horn key control, a global positioning system (GPS) positioning / timing system, an automobile horn, a geographical spatial database system, an automobile horn sounding control module, an intelligent horn control system and the like, wherein the intelligent horn control system recognizes section / time interval information intelligently and controls the sounding and the volume of the automobile horn according to whistle control time intervals and whistle area information set on related portions. According to the intelligent control device and control method, automatic control of silence, the low pitch and the high pitch of the automobile horn is achieved according to positions and current time as well as whistle control regulations specified by relevant departments; noise pollution generated by automobile horns due to disordered whistling, tweeter whistling and the like can be controlled effectively; and traffic violation acts can be eradicated fundamentally simultaneously.

Individual speaker polarity is detected by band-limiting the processing to a range where the impulse response of most speakers are in-phase with their wiring. In the preferred embodiment, a second order 400 Hz Low Pass Filter (LPF) is used to band-limit the processing. Filtering can occur prior to processing as part of the noise generation, or completely as a post-processing operation on a full-bandwidth impulse response. Applying the low pass filter eliminates artifacts in the impulse response due to reverse-polarity wired drivers in a speaker system (e.g., tweeter). By analyzing only the lower frequencies, the initial peak of the impulse response will correlate to speaker polarity in the system.

Point source speaker systems are provided. The point source speaker system receives audio input from a device. The system comprises a mountable enclosure, which contains a speaker array. The array includes a substantially forward facing left speaker, a substantially forward facing center speaker, a substantially forward facing right speaker and a horizontally mounted woofer speaker. A woofer tunnel is located behind the left, center and right speakers. The woofer tunnel accelerates woofer sound waves and terminuses at a woofer baffle which leads to a woofer port. The left speaker, center speaker and right speaker may include more than one speaker. One or more of these left speakers and right speakers may be a tweeter. The left speakers receive a left minus right input, the center speakers receive a right plus left input, and the right speakers receive right minus left input.

An improved electrically conductive membrane pump / transducer. The electrically conductive pump / transducer includes an array of electrically conductive membrane pumps that combine to generate a desired sound by moving a membrane (such as a membrane of PDMS), a piston, and / or by the use of pressurized airflow in the absence of such a membrane or piston. The electrically conductive membranes in the array can be, for example, graphene-polymer membranes. The electrically conductive pump can include mid-range, tweeter, and sub-woofer speakers.

A ceiling-mounted loudspeaker includes a horn-shaped enclosure, an acoustic driver, and a front module. The tubular or horn-shaped enclosure carries a slanted woofer or loudspeaker driver which radiates into an angled or slanted first opening. The tubular enclosure terminates at bottom in a second, circular opening substantially parallel to a second plane, wherein the woofer's slanted plane is inclined with respect to the second plane. The slanted woofer can be oval and radiates sound through the enclosure's interior lumen and outwardly through ports defined in a substantially circular baffle carrying the front module and connected to the second opening. The baffle carries a midrange and tweeter near the ceiling where they can provide enhanced sound dispersion.

A system for the projection of cinematographic works or digital works with sound having at least one sound channel. The system comprises a screen and, for the sound channel, at least one woofer and at least one medium / treble transducer. The screen is a non-perforated screen. The medium / treble speaker is a flat sound transducer placed against the screen to the rear thereof in relation to the direction of projection. An extreme treble speaker is disposed on the periphery of the screen.

An electromagnetic transducer such as a tweeter audio speaker, having a very low density diaphragm constructed of a nanoporous material such as aerogel or the like. The solid aerogel diaphragm has improved rigidity and reduced susceptibility to breakup modes. The aerogel may be provided with a skin of e.g. metal, plastic, or oxide to protect it, and it may be built by filling a conventional cone. The skin may encapsulate part or all of the aerogel body's surface, and it may further encapsulate the bobbin, or even the entire voice coil assembly. The nanoporous material comprises a very large percentage of the diaphragm's overall volume, giving the diaphragm a very low overall mass density with respect to conventional diaphragms. This allows diaphragm configurations, such as solid filled spheres, which have excellent stiffness without suffering from the large mass that such shapes would mandate if constructed from conventional materials.

In a seat, a bass acoustic vibration transmission section and a treble acoustic vibration transmission section are arranged distinctively with respect to a seat occupant, such that those two acoustic vibration transmission sections are disposed independently of each other, thereby achieving both of the following two effects: an acoustic performance worthy of acoustic seat; and a seating comfort essentially required as a seat.A vibration conduction unit is provided, which comprises a combination of: one bass speaker; a support plate to which that one bass speaker is secured; and a network cushion member of three-dimensional structure arranged on an anterior surface of the support plate. Such vibration conduction unit is disposed and accommodated in a cut-out region defined in a seat padding to a predetermined extent of covering an area of seat back which corresponds to a lumbar part of seat occupant, whereas on the other hand, a pair of treble speakers are respectively provided in a pair of local areas of the seat padding which correspond respectively to left-side and right-side shoulder portions of seat back, such that each of those two local areas of seat padding has an opening defined therein, wherein the opening lies anteriorly of an output side of each of the two treble speakers.

Improved loudspeakers, systems and components are adapted to interconnect with many forms of communication media. In one embodiment, a speaker is mountable within a receptacle. The speaker includes a magnetic driver and a diaphragm mounted to a frame. The frame includes a mounting member extending from a surface of the frame behind the flange plane. The mounting member is engagable in a notch formed in the receptacle for securing the speaker within the receptacle. In another embodiment, a low-profile loudspeaker has a front-mounted magnetic driver disposed within a cone-shaped acoustic diaphragm. The magnetic driver includes a first rare earth magnet centrally disposed within an electromagnetic shielding material. In another embodiment, a low-profile, two-way loudspeaker includes a cone-shaped diaphragm and a dome-shaped (tweeter) diaphragm. A front-mounted magnetic driver comprises first and second rare earth magnets each centrally disposed within electromagnetic shielding material. The driver and cone-shaped diaphragm are mounted to a speaker frame. The tweeter diaphragm is mounted onto the driver coaxially and substantially coplanar with a forward edge of the cone-shaped diaphragm.

A speaker system and related method for making the same include a rigid, cylindrically shaped body member with opposite ends and a hollow interior which defines a sound chamber. A base is connected with one end of the body member to support the speaker system within a building room. A high-range speaker is mounted in the sound chamber, with a diaphragm portion located within a first radial opening in the body member to direct high-range sound radially toward the listener. A bass port is mounted in a second radial opening in the body member opposite the high-range speaker, and directs low-range sound in the sound chamber radially toward the listener. A head is mounted on the end of the body member opposite the base member, and includes a mid-bass speaker with a diaphragm oriented axially outwardly, so that sound emitted therefrom is directed axially onto the surfaces of the room to naturally equalize the output of the speaker system.

A loudspeaker system designed for ceiling installation. The system includes a woofer, a midrange speaker and a tweeter commonly supported on a rotatable support member which in turn is supported on and is rotatable with respect to an annular rim that is designed to be fixed about an opening in the ceiling. The woofer is aligned at one acute angle and the midrange speaker and tweeter at another acute angle to the annular rim. The mid range speaker and tweeter are partially segregated from the woofer by a baffle.

Improved loudspeakers, systems and components are adapted to interconnect with many forms of communication media. In one embodiment, a speaker is mountable within a receptacle. The speaker includes a magnetic driver and a diaphragm mounted to a frame. The frame includes a mounting member extending from a surface of the frame behind the flange plane. The mounting member is engagable in a notch formed in the receptacle for securing the speaker within the receptacle. In another embodiment, a low-profile loudspeaker has a front-mounted magnetic driver disposed within a cone-shaped acoustic diaphragm. The magnetic driver includes a first rare earth magnet centrally disposed within an electromagnetic shielding material. In another embodiment, a low-profile, two-way loudspeaker includes a cone-shaped diaphragm and a dome-shaped (tweeter) diaphragm. A front-mounted magnetic driver comprises first and second rare earth magnets each centrally disposed within electromagnetic shielding material. The driver and cone-shaped diaphragm are mounted to a speaker frame. The tweeter diaphragm is mounted onto the driver coaxially and substantially coplanar with a forward edge of the cone-shaped diaphragm.

A speaker set (10) includes an enclosure (11) extending two spaced supporting portions (118) from a bottom side thereof for contacting with a supporting member (20); a woofer (12), two mid-frequency speakers (13), and two tweeters (14) are disposed in the enclosure; a circuitry electrically connects with the woofer, the mid-frequency speakers, and the tweeters; two woofer chambers (121, 123) are disposed at two opposite sides of a diaphragm of the woofer. One of the woofer chambers is defined between the bottom side of the enclosure, the supporting portions of the enclosure and the supporting member, whilst the other one of the woofer chambers is defined in the enclosure. Sound generated by the woofer emanates to a surrounding environment through both the woofer chambers, wherein the enclosure defines a plurality of venting holes (122) communicating with the other one of the woofer chambers.

A rear projector (1) has a lower cabinet (13) disposing an image generator and an upper cabinet (12) for a screen body (51) to be mounted, two woofer boxes (60) being mounted on the front side of the lower cabinet (13) and high-pitched sound speaker boxes (70) being respectively mounted on the right and left lateral sides of the upper cabinet (12), so that, since the woofer box (60) is disposed in the lower cabinet (13), vibration is not easily transferred to a screen body (51) on the upper cabinet (12) and a reflection mirror inside the upper cabinet (12), thus avoiding flicker of the image on the screen body (51) even when great volume of sound is outputted by the woofer box (60).

The invention relates to a slope turn traffic command system based on wireless sensor network. The system is composed of a perception subsystem based on wireless sensor network and a traffic reminding subsystem; the perception subsystem comprises a sensor module and a wireless transmission module; the wireless transmission module comprises a wireless transceiving converging node, a cluster-head node and a wireless control subnode; the sensor module is connected with the cluster-head node and mounted on the face and two sides of the slope turn road; the wireless control subnode is connected on the traffic reminding equipment arranged at two sides of the road; the wireless transceiving converging node is connected with a remote control computer; the traffic reminding subsystem comprises a control circuit based on a finite state automat, a speed limitation board and a tweeter; the control circuit receives command from the wireless control subnode to control the speed limitation board and the tweeter. In the invention, wireless sensor network is adopted to mainly complete automatic monitoring control reminding to vechile traffic at slope turn.

A water-resistant and weatherproof high-fidelity / high power audio and speaker system adapted for outside use includes a top speaker member including a first speaker, a bottom speaker member including a second speaker, an audio component member and high current low voltage dc power supply for being mounted under the top speaker member, a spacer member for spacing the top speaker member with the bottom speaker member, and a guide member for cooperating with the spacer member to align the top speaker member and the bottom speaker member. The guide member may be a dowel pin, and the top speaker member may include a speaker terminal member to connect to the first speaker. The top speaker member may include a cabinet handle member to aid in lifting the top speaker member, and the top speaker member may include a tweeter speaker member. The top speaker member may include a woofer speaker member, and the top speaker member may include a base port member for passage of base level sounds.

The invention discloses a micro speaker with directional transaudient function, belonging to the speaker field, which comprises a plurality of transducer units in the form of array. The speaker comprises the following working steps: audio signal is amplified by a broadband power amplifier and input into a micro transducer, and the transducer generates audible sound which has the same working principle as the traditional audio tweeter; the audio signal is loaded into ultrasonic signal generated by a digital signal processing system; the modulated signal is amplified by the broadband power amplifier and input into the micro transducer; the transducer transmits the signal in air; due to air nonlinear interaction, the signal generates audible sound with high directivity by self-modulating. The speaker is applicable to the occasion with traditional audio function separately or directional transaudient function or both.