107results about How to "Improve sound transmission" patented technology

A security device includes a locking member, a ratchet mechanism, and a plurality of cables. The cables are wrapped around all six sides of a box-like article. An attachment clip is releasably snap-fitted into the body of the security device and locked therein by a magnetically attractable member. The ratchet mechanism includes a spool and a locking pawl or lever. A top wall of the housing or locking clip has a key receiving recess for positioning the key for unlocking the clip from the housing and releasing the spool from the ratchet mechanism. The housing has a rotatable handle for manually rotating the internal spool to further tighten the cable about the article after the cable slack is taken up by an internal spring. An alarm system is contained in the housing and actuates an audible alarm upon certain unauthorized actions occurring. The spool is biased by the internal spring to automatically wind the cable onto the spool after the clip has been unlocked from the housing. Insertion of the clip into the housing automatically actuates the ratchet mechanism preventing movement of the cable in the unwind direction and activates the alarm system.

An ultrasound coupling device for acoustically coupling an ultrasound transducer with a patient's body comprises a fluid chamber having an ultrasound transducer interface for placing an ultrasound transducer in contact with water within said fluid chamber. The coupling device also has a patient interface comprising a water permeable membrane. The membrane has an internal membrane surface which is in contact with the water in the water tank and an external membrane surface can be placed in contact with the patient's body. The membrane is specially designed to allow water from inside the water tank to slowly permeate or “leak” to the external membrane surface while such surface is in contact or placed in very close proximity to the patient's skin. The slow permeation rate maintains the external membrane surface wet and free of air bubbles during a procedure which can take several hours. At the same time, the slow rate of permeation does not cause any water spillage around the patient.

A system for welding communication that includes a welding headgear and a bone conduction transducer (BCT) disposed in or on the welding headgear is provided. The BCT facilitates communication of signals to a welding operator via bone conduction. The bone conduction facilitates the transmission of sound directly to an inner ear of the welding operator.

A frame assembly (10) for a television (T) mounted on a wall (W) and extending a distance outwardly from the wall. A generally rectangular shaped frame (12) has a decoratively shaped outer contour. The frame has a rectangular shaped central opening (14) whose length and width correspond to that of the television screen (S). An outer section (12a) of the frame adjacent the central opening is sized to fit over and cover an outer shell (C) of the television. A foot (20) is formed at each corner of the frame to support the frame. A base (22) of each foot rests against the wall. The feet space an inner surface (18) of the frame away from the wall to allow air circulation around a backside of the television and conduct heat produced by the television away from the television and the routing of cables.

An apparatus for transmitting sound in a motor vehicle including a housing (1) with an inside partition (2), which together define or delimit two separate subspaces (3, 4), which in turn are separated by a transmission valve (6) which opens through the partition (2) and can pivot about a pivot axis (5). The first subspace (3) is connected to an intake manifold of an internal combustion engine, and the second subspace (4) is connected to an interior of the motor vehicle. An elastic and at least partially perforated sealing element (8) is provided in a gap (25) between a peripheral edge (7) of the transmission valve (6) and the housing (1).

The invention discloses a construction method of plastic acoustic pipe fixation, which comprises the following steps: first, connecting the plastic acoustic pipe as long as reinforcement cage with the major steel of reinforcement cage; second, connecting the roll end with the last acoustic pipe end and one end of joining member with the other end of acoustic pipe by binder; then, dragging the drilling; putting down the reinforcement cage; injecting water in the acoustic pipe; putting down the second reinforcement cage in connection with the former cage; connecting the acoustic pipe with the inner acoustic pipe of previous reinforcement cage by joining member and binder; filling the acoustic pipe with clean water until the last pipe according to the analogy; binding the roll end and the top of acoustic pipe by binder; finally, casting concrete. This method has the following characteristics: simple construction process; low strength construction for workers; low cost and so on, which can be set in the filling plastic acoustic pipe.

A system for providing an enhanced audible environment within an aircraft cabin includes at least one, but possibly, a plurality of transducers mounted symmetrically about a window of the aircraft cabin on a mounting flange of the window. The transducers are cooperatively disposed and configured to excite at least a viewing pane of said window so as to provide a desired audible environment within an aircraft cabin, without obstructing the view from the window.

An exhaust system (1) is provided for an internal combustion engine (4), especially in a motor vehicle, with two separate exhaust gas lines (2, 3) with a first sound transmission feature (7), which couples the two exhaust gas lines (2, 3) with one another, and with a control (9) for activating and deactivating the first sound transmission connection (7) as a function of at least one operating parameter of the internal combustion engine (4). To improve the muffling behavior, a second sound transmission connection (8) is provided, which couples the two exhaust gas lines (2, 3) with one another downstream of the first sound transmission connection (7), and makes possible, depending on the particular operating parameter, three switching states (SZ), namely, a first switching state, in which both sound transmission connections (7, 8) are deactivated, a second switching state, in which only one sound transmission connection (7, 8) is activated, and a third switching state, in which both sound transmission connections (7, 8) are activated.

A pot-plant-shaped loudspeaker cabinet mainly includes a flowerpot-shaped and open-topped hollow enclosure, at least one speaker received in the enclosure, a cover closing a top opening of the enclosure, a decorative pot plant fixed to the cover and including a plurality of optical fibers and a light source connected to roots of the optical fibers, and a wireless transmission device. Sound apertures are provided on the enclosure and the cover in different patterns to facilitate diffusion of sounds emitted from the speaker. The optical fibers upward guide light rays emitted from the light source to create changes in brightness and color of the emitted light rays. The wireless transmission device includes a transmitter unit associated with a sound signal source and a receiver circuit board connected to the speaker, enabling the speaker to receive sound signals either in a wired or a wireless manner.

An electret-capacity microphone of waterproof and antimoisture type is prepared as setting voice hole at sealed end of metal shell; fixing waterproof screen at external side of said voice hole for avoiding dust or moisture to enter internal of microphone; superposing support ring of water blocking screen, water blocking screen, vibration diaphragm, insulation pad, back polar plate, polar ring and printed circuit board in sequence in metal shell.

The invention relates to a close-contact ultrasonic coupling adaptive device for photoacoustic / thermoacoustic mammary gland imaging detection, and belongs to the technical field of photoacoustic / thermoacoustic imaging. The adaptive device comprises a detection cup, a coupling liquid spray device and an air pressure regulating device, wherein a to-be-detected breast is placed in the detection cup with the shape and the size corresponding to the breast; the coupling liquid spray device is connected with the detection cup, and can spray ultrasonic coupling liquid between the to-be-detected breast and the detection cup; and the air pressure regulating device is connected with the detection cup by an air guide tube, and inhales or deflates between the to-be-detected breast and the detection cup. The adaptive device has the advantages that the adaptive device is good in matching degree, safe, comfortable, easy to replace, and high in automation degree.

An earplug structure includes a sound guide part, a body part, a sound guide component, and a gap. The sound guide part is configured to be inserted into an ear canal of an ear. The sound guide part includes a sound guide chamber and a sound output opening. The sound guide chamber is disposed inside the sound guide part, and the sound output opening is disposed on the sound guide part for outputting sound to the ear canal. The body part is extending outwardly from the sound guide part and configured to face an auricle region of the ear. The body part includes a receiving space and an opening. The sound guide component is positioned inside the sound guide chamber and is made of hard material. The gap is formed by the sound guide part and sound guide component.

A hearing aid eartip is disclosed for use with an over-the-ear hearing aid which incorporates a means for accepting a detachable wax guard for the purposes of preventing wax buildup in the hearing aid sound transmission tube. The disclosed invention is effective at transmitting sound from an over-the-ear hearing aid to the patient's ear canal, is easily inserted into the patient's ear canal, and provides for a more aesthetically pleasing form factor than the prior art. The disclosed invention controls cerumen, improves overall hearing aid gain, and reduces unwanted hearing aid feedback.

Certain example embodiments relate to an acoustic wall assembly that uses active and / or passive sound reverberation to achieve noise-disruptive functionality, and / or a method of making and / or using the same. With the active approach, sound waves in a given frequency range are detected by a sound masking circuit. Responsive to detection of such sound waves, an air pump (e.g., speaker) is used to pump air in the wall assembly to actively mask the detected sound waves via reverberation and / or the like. The wall assembly may include one, two, or more walls, and the walls may be partial or full walls. With the passive approach, sound waves in a given frequency range are disrupted via features (e.g., holes, slits, etc.) formed in and / or on a wall itself. These techniques may be used together or separately, in different example embodiments.

An acoustic element is implanted in a human bone of the craniomaxillofacial region with the aid of at least one anchor element including a material having thermoplastic properties, wherein for implantation of the acoustic element an opening is provided in the bone, the anchor element is positioned in the bone and energy is transmitted into the material having thermoplastic properties for at least partly liquefying the material and making it penetrate the bone tissue in the opening and on re-solidification to constitute a positive fit connection between the anchor element and the bone tissue. Depending on the design of the anchor element and / or on the relative dimensions of the opening and the anchor element it is possible to achieve an anchorage which either transmits sound between the acoustic element and the bone tissue or does not do so.

A framework for a stringed musical instrument includes a body having a first interlocking interface in an outside face, a neck having a distal end and a proximal end with a second interlocking interface in the proximal end, and a key configured with first and second portions. One of the key portions is configured to interlock in the first interface on the outside face and the other of the portions is configured to interlock in the second interface of the proximal end such that the body and neck are held together, at least in part, by their common interlocking with the key.

The therapeutic ultrasound gel is a composition that lubricates the abdomen for ultrasound scanning, that enhances the transmission of sound waves during ultrasound diagnostic imaging, and that has beneficial therapeutic effects in preventing the formation of stretch marks. The composition contains effective amounts of aloe vera (Aloe barbadensis), glycerin, and various agents for preventing the formation of stretch marks, with the balance being sufficient water to adjust the consistency of the composition. The composition may also be formulated for home use, chiefly by the addition of vitamin D3 or, alternatively, vitamin K. Either formulation may contain additional excipients, including surfactants, emulsifiers, humectants, stabilizers, thickeners, pH balancers, preservatives, colorants, and scent, if desired.

An ossicular prosthesis comprising a sound-conducting prosthesis body formed with a first coupling element and a second coupling element. The second coupling element is designed as a clip or a slotted bell and has an access opening into a receiving space having an inner surface in the axial extension of the prosthesis body.The inner surface is bounded by a peripheral outer edge having multiple interruptions. The second coupling element has, on an outer edge of the inner surface of the receiving space, at least two spikes distributed around the periphery of the outer edge, extending in a direction parallel to the axial extension of the elongate prosthesis body. In an implanted state, the spikes engage into the head of the stapes to effectuate a secure hold of the second coupling element.

The invention discloses a high-temperature pipeline wall thickness online monitoring device and method based on an ultrasonic waveguide. A lath-shaped waveguide structure is adopted as a heat buffer structure for cooling and heat insulation, meanwhile, based on non-frequency-dispersion horizontal shear guided wave signal transmission in the waveguide structure, piezoelectric ultrasound of a to-be-monitored high-temperature pipeline is subjected to long-distance, on-line and real-time monitoring, and the pipeline with the temperature reaching 1000 DEG C can be monitored; the waveguide structureand the to-be-monitored high-temperature pipeline make contact through pressure dry coupling, a good sound transmission effect is achieved, and the problem of a failure of a liquid coupling agent atthe high temperature is solved; meanwhile, a piezoelectric ceramic wafer in a d24 mode is adopted, thus the lighter and cheaper effects are achieved, power consumption is low, the efficiency is high,and surface bonding and fixing are also more convenient and firmer compared with a thickness coupling mode; and the high-temperature pipeline wall thickness online monitoring device can be permanentlymounted on the high-temperature pipeline during test run of the high-temperature pipeline, the safety state of the high-temperature pipeline is continuously obtained for a long time, the detection frequency can be increased, and the error caused by recoupling of a probe each time is also decreased.

The invention discloses a sound-transmission LED display screen applied to a large-sized LED screen and a sound transmission method. The display screen comprises a PCB and a plurality of light-emitting pixels arranged on the PCB, wherein the light-emitting pixels are surface-mounted light-emitting diodes and are fixed on a light-emitting surface of the PCB through adhesion, each adjacent four light-emitting pixels form a group and are adhered to the light-emitting surface of the PCB, and a sound-transmission hole penetrating through the PCB is formed in the middles of each adjacent four light-emitting pixels. According to the sound-transmission LED display screen, the areas of the sound-transmission holes are greatly increased, and the sound-transmission holes are formed by virtue of limited space among the light-emitting pixels, so that a good sound transmission effect is achieved, the wire distribution of the light-emitting pixels is not influenced, and meanwhile, the sound-transmission LED display screen has good sound transmission rate.

The invention relates to a permanent magnet iron remover used for automatically removing inclusion steel and iron parts in materials from a dispersed solid non-magnetic material conveyer belt. A method that the permanent magnet iron remover adopts acoustic wave to detect the iron parts comprises the following steps: the lower part of the permanent magnet yoke is provided with a non-magnetoconductivity baffle, the permanent magnet yoke and the non-magnetoconductivity baffle circles a space which forms a sealed chamber, an acoustic wave detecting device is arranged in a hole which is opened at one side of the permanent magnet yoke and is communicated with the sealed chamber, the sound wave detecting device converts an acoustic signal and outputs an electrical signal to a control box of the iron remover; the electrical signal is calculated by a comparison control circuit in the control box and then output to be connected with an operating power supply of an iron-removing belt, thus controlling the rotation of the iron-removing belt. The invention can automatically detect that whether iron parts are absorbed by the permanent magnet and has simple structure, convenient use and debugging and high efficiency; the iron-removing belt does not need continuous running for a long time, and runs only when the iron parts are absorbed; besides, the invention can save electrical energy, has little consumption and can prolong the service life of the iron remover.

The invention discloses a rainfall measuring system based on rainwater knock recognition. The rainfall measuring system is composed of a rainfall measuring meter, a host and an upper computer jointly.The rainfall measuring meter recognizes the rainfall through a rainwater knock, and the rainfall measuring meter comprises a metal hollow sphere made by machining a metal sheet, and a wireless microphone arranged at the sphere center of the hollow sphere and used for collecting a sound signal generated when rainwater knocks the surface of the hollow sphere. The wireless microphone is connected with a radio signal of the host. The host enables the sound signal sent by the wireless microphone to generate an mp3 file to be preserved and uploads the generated file to the upper computer. The uppercomputer conducts de-noise processing on the received sound signal and achieves rainfall measuring based on a rain sound signal by combining BP neural network training. A measuring method of the rainfall measuring system based on rainwater knock recognition comprises the steps of collecting of target sound signals, de-noise processing of the target sound signals, extracting of feature parametersof the rain sound signal, and BP neural network training and recognizing.

The invention discloses a display with a sound function. The display comprises a curved display and a projection device. The display further comprises a film speaker attached onto the curved display. The film speaker comprises at least one sounding film, at least one conductive film, at least one insulated layer, and at least two conductive terminals. The at least one conductive film is applied to the sounding film and made of a nano-metal wire material. The at least one insulated layer is attached onto the conductive film. The insulated layer and / or a tone quality improvement layer comprise / comprises multiple groups of micro-machined structures. The at least two conductive terminals are attached onto the conductive films and connected with a speaker driving circuit. According to the display, the film speaker is combined with the curved projection display, the film speaker is attached onto the surface of the curved projection display, and the film speaker is transparent and does not influence the content displayed by the curved projection display, so that a sound can be played when the display displays a video or an image, the practicality of the display is improved, and the display is more intelligent.

According to the present invention a first main communication device at a first site includes a first network interface associated with a communication network, a local wireless interface for interfacing with a number of satellite communication devices, a network communication unit for communicating over the first network interface, a local communication unit for communication with satellite communication devices via the local wireless interface, and a control unit. The control unit receives sound picked up by a group of satellite communication devices at the first site via the local wireless interface, combines this received sound, and orders the network communication unit to send the combined sound via the network interface to a second main communication device at a second site as sound in the conference communication session provided by the first main communication device.