20results about How to "Lower the volume" patented technology

The present application provides a method for diagnosing and / or evaluating the presence or absence, severity or degree of the improvement of a retinal disease in a subject, which comprises determining and / or evaluating circulatory parameters, retinal function, retina morphology and / or visual relating quality of life (QOL).

The present invention relates to a shock absorber (100) comprising a cylinder (7), a piston rod (2) and a piston (6) attached to said piston rod (2). The piston (6) is arranged in said cylinder (7) and a damping chamber comprising a damping media is defined in the cylinder (7). The shock absorber (100) further comprises a gas spring in functional connection with the damping chamber and at least one characteristic of the gas spring is adjustable by a user-adjustable feature arranged within the piston rod, wherein said user adjustable feature affects the enclosing area of the damping chamber, thereby indirectly affecting the gas spring through the functional connection.

The application provides an example in the technical field of signal processing, and provides an audio device, an echo cancellation method and an apparatus. The audio device comprises a loudspeaker, a microphone, and a processor connected with the microphone and the loudspeaker respectively. The processor is configured to: acquire an audio signal frame received by the microphone; perform echo cancellation processing on the audio signal frame; if a nonlinear filter suppression coefficient used in the echo cancellation processing is less than a coefficient threshold value, and a current call state is detected as a double-talk state, then add 1 to a count value; if the count value is greater than or equal to a count threshold value, then reduce the volume of the loudspeaker; if the count value is less than the count threshold value, then perform the acquisition of the audio signal frame received by the microphone; if the nonlinear filter suppression coefficient is greater than or equal to the coefficient threshold value, or the current call state is detected as a non-double-talk state, then clear the count value, and perform the acquisition of the audio signal frame received by the microphone. The application can effectively eliminate echo.

The present invention discloses a belt-transmission angle attachment head, including a housing, a power mechanism, a transmission mechanism and a spindle; the power mechanism and transmission mechanism are arranged in the housing; the power mechanism includes a servo motor and a reducer, the servo motor is connected to the reducer, and an input shaft of the reducer is vertically arranged with respect to an output shaft of the reducer; the transmission mechanism includes a driving wheel, a transmission belt and a driven wheel, and the driving wheel is mounted on the output shaft of the reducer; a side of the spindle is mounted on the housing via a rotating shaft, an end of the rotating shaft away from the spindle is mounted with the driven wheel, the driving wheel and the driven wheel are connected via the transmission belt, and the spindle and the power mechanism are located on the same side of the transmission mechanism. The angle attachment head has advantages such as small size, simple structure and suitable for deep cavity machining.

An equalizer includes a graphic equalizer circuit, a first multiplication circuit, a second multiplication circuit, a summing circuit, and a gain control circuit. The graphic equalizer circuit processes a first input signal and outputs a first output signal and a second output signal. The first multiplication circuit multiplies the first output signal by one of an adjustable gain value and a fixed gain value to produce a first adjusted output signal. The second multiplication circuit multiplies the second output signal by the other of the adjustable gain value and the fixed gain value to produce a second adjusted output signal. The summing circuit combines the first adjusted output signal and the second adjusted output signal to produce an equalizer output signal. The gain control circuit dynamically adjusts the adjustable gain value based on the equalizer output signal.

The present invention is relative to a damper (5) adapted to regulate an air flow orifice (7) for passing of an air flow in a ventilation duct (2), wherein the damper (5) comprises a plate (11), a regulating device (12) and a mounting element (13), wherein the mounting element (13) is resilient and comprises a first and a second end (19, 20), the distance (L1, L2) between the first and the second end (19, 20) being arranged to change when the mounting element (13) bends resiliently, and wherein the first and a seconds end (19, 20) are adapted to cooperate with an inside of the ventilation duct (2) to removably mount the damper (5) in the ventilation duct (2), and a ventilation system (1) comprising such a damper (5).

On the support portion 20 of the frame 2, a plurality of hexagonal recesses 20a and through holes 20b are formed, arranged so that their edges are adjacent to each other. This allows a portion of the vibration (sound) from when the drumhead 4 is struck to be released to the outside through the through holes 20b, thus suppressing the echo of the vibration within the frame 2. Furthermore, the rigidity of the support portion 20 (frame 2) can be effectively improved by the bottom wall 20c of the recesses 20a or the side wall 20d dividing the recesses 20a and the through holes 20b. Therefore, the rigidity of the frame 2 can be increased while reducing the volume when the drumhead 4 is struck.

The utility model belongs to the technical field of pressure swing adsorption equipment, and aims to provide energy-saving pressure swing adsorption gas production equipment which comprises a gas supply unit, an adsorption unit and a gas storage unit which are sequentially connected, the gas supply unit comprises a process air buffer tank, and a clean compressed air inlet is formed in the front end of the process air buffer tank; the adsorption unit comprises a plurality of pressure swing adsorption gas making machines; the gas storage unit comprises a process pure gas buffer tank, the side face of the upper end of the process pure gas buffer tank is connected with the main gas outlet pipeline, the side face of the lower end of the process pure gas buffer tank is provided with a finished gas pipeline, and the tail end of the finished gas pipeline is provided with a finished gas outlet and an unqualified gas discharge outlet. The energy-saving pressure swing adsorption gas production equipment disclosed by the utility model has the characteristics of compact structure, obvious energy-saving effect, high utilization rate of clean compressed gas, low equipment cost, small occupied area and the like, and can be widely applied to the technical field of production of the pressure swing adsorption gas production equipment.

A wiring harness module and a combined wiring harness, the wiring harness module including a conductor portion and an insulation portion enclosing the conductor portion. The conductor portion includes at least one conductor, each of which is connected to at least one input conductive connector and at least one output conductive connector. An electrical connection of the conductors of different wiring harness modules is realized by connecting the input conductive connector and the output conductive connector of the different wiring harness modules. The combined wiring harness is formed by splicing a plurality of wiring harness modules in accordance with a preset splicing manner, and the conductors of the plurality of wiring harness modules being electrically connected to each other via the input conductive connector and the output conductive connector. In the present disclosure, each wiring harness module is connected to at least two other wiring harness modules, and each conductor is electrically connected to at least two other conductors, so that a complex conductive circuit is combined.

The utility model discloses a copper shield and transformer structure for a transformer partial discharge test, which comprises a copper plate piece, the copper plate piece is integrally bent to form a cylindrical structure, and the cylindrical copper plate piece is provided with a first edge, a second edge, a third edge and a fourth edge. The first edge and the second edge are parallel to the axis of the cylindrical copper plate piece, the first edge and the second edge are not in contact, the third edge and the fourth edge are arc edges at the two ends of the cylindrical copper plate piece correspondingly, transition parts are arranged on the third edge and the fourth edge correspondingly, and the transition parts are arranged at the two ends of the cylindrical copper plate piece correspondingly. The copper plate piece and the transition part are wrapped with insulating layers. The shielding sleeve is sleeved between a low-voltage coil and a high-voltage coil of a transformer, so that shielding between the low-voltage coil and the high-voltage coil is realized, transmission of partial discharge interference signals on a low-voltage side to a high-voltage side is reduced, background partial discharge quantity is reduced, and test accuracy is improved.

The utility model relates to a white noise meter which comprises a shell, a main board is arranged in the shell, a human body induction device is arranged on the main board, a loudspeaker electrically connected with the main board is arranged in the shell, and a sound outlet hole is formed in the position, opposite to the loudspeaker, of the shell. A sound outlet hole is formed in the shell, two strip-shaped protruding blocks located on the two opposite sides of the sound outlet hole are arranged on the outer side face of the shell, a covering piece covering the sound outlet hole is arranged between the two strip-shaped protruding blocks in a sliding mode, and a driving mechanism driving the covering piece to be exposed out of the sound outlet hole or cover the sound outlet hole is arranged on the shell. The driving mechanism drives the covering piece to expose the sound outlet hole, sound of the loudspeaker is transmitted out of the sound outlet hole, the loudspeaker stops working and saves electricity after the human body induction device induces that a user leaves, and the driving mechanism drives the covering piece to cover the sound outlet hole, so that dust, hair or oil dirt and the like are prevented from blocking the sound outlet hole, and the interval time for cleaning the sound outlet hole is shortened.

The secondary battery case accommodates an electrode assembly having a structure in which electrodes and separators are alternately arranged, the secondary battery case including a first cup having a recessed shape, a second cup having a recessed shape and provided on one side of the first cup, a first peripheral portion surrounding a perimeter of the first cup when the secondary battery case is unfolded, and a second peripheral portion surrounding a perimeter of the second cup when the secondary battery case is unfolded. The first peripheral portion includes a first cup-corresponding peripheral portion that corresponds to a width of the first cup, and the second peripheral portion includes a second cup-corresponding peripheral portion that corresponds to the second cup. When viewed in a cross-sectional view in which the width of the first cup is shown, the width of the first cup is greater than a width of the first cup-corresponding peripheral portion.

The present invention is relative to a damper (5) adapted to regulate an air flow orifice (7) for passing of an air flow in a ventilation duct (2), wherein the damper (5) comprises a plate (11), a regulating device (12) and a mounting element (13), wherein the mounting element (13) is resilient and comprises a first and a second end (19, 20), the distance (L1, L2) between the first and the second end (19, 20) being arranged to change when the mounting element (13) bends resiliently, and wherein the first and a seconds end (19, 20) are adapted to cooperate with an inside of the ventilation duct (2) to removably mount the damper (5) in the ventilation duct (2), and a ventilation system (1) comprising such a damper (5).

The utility model discloses an elevator door panel noise reduction device, including floor door lower ridge and the floor door upper ridge of setting at floor door lower ridge top position, in using elevator door panel noise reduction device, first, the buffer shock pad is inserted into the inside of slide, then, the slide is installed in the outside of sliding block, then, the fastening nut is inserted into the inside of connecting hole through the placement groove and is connected with connecting hole through the thread, thereby making the slide installed in the outside of sliding block, when the sliding block and the slide groove rub, because the slide is made of polytetrafluoroethylene material, has very low friction coefficient, its surface is very smooth, almost does not adhere to any material, thereby can reduce the noise that the sliding block and the slide groove rub produce, and because the buffer shock pad is made of rubber material, not only can play the protection effect to the sliding block, but also can prevent the noise that the slide and the sliding block rub produce, through the cooperation of the slide and the buffer shock pad, reduce the noise that the sliding block and the slide groove, the slide rub produce.

The present invention discloses a preparation method for iron phosphate powder by microporous filtration and concentration and a preparation device thereof. The preparation method includes: putting raw materials into a reactor to react for nucleation, a mother liquor generated after raw materials reaction entering the filter concentrator, and controlling and starting a stirring shaft for driving an upper stirring blade and a lower stirring blade to rotate for grinding and scaling; when a mother solution level exceeds an upper liquid inlet end of lower microporous filtration tube groups, controlling and starting a filtrate valve of a filtrate tube of the lower microporous filtration tube groups, and when the mother solution level exceeds the upper liquid inlet end of upper microporous filtration tube groups, controlling and starting a filtrate valve of a filtrate tube of the upper microporous filtration tube groups. The present invention has small instantaneous flow fluctuation, has the characteristic of good accuracy of a reaction system, and integrates a filtration system and an intermediate tank to effectively reduce the volume and shorten the reaction process.

This invention relates to the field of intelligent control technology, and discloses a sleep control method, device, air purifying equipment, and storage medium. Applied to an air purifying equipment, the equipment includes multiple air outlets disposed around the perimeter of the casing and an air outlet disposed on the top of the unit. Each air outlet is equipped with an independently openable and closable baffle assembly for controlling the opening and closing of the corresponding air outlet. The method includes: acquiring sleep-related parameters of the user, including at least: preset sleep period information, user status data, and ambient light intensity; determining the user's current target sleep stage based on the preset sleep period information, user status data, and ambient light intensity; matching and executing a control strategy corresponding to the target sleep stage. The control strategy controls the fan of the air purifying equipment and selectively controls the opening and closing states of air outlets at different locations according to different sleep stages, providing a more comfortable sleep environment for the user.

A small manual coffee maker includes: a cup body and a coffee brewing base that are detachably connected together, a lower end of the cup body is connected to the coffee brewing base, a water chamber and a pressure chamber are disposed in the cup body, a coffee brewing chamber and at least a coffee outlet passage are disposed in the coffee brewing base, the cup body is provided with at least a water inlet passage that communicates with the pressure chamber and at least a water outlet passage that communicates with the pressure chamber and the coffee brewing chamber, a bottom of the water chamber is provided with at least a water inlet in communication with the water inlet passage, the water inlet passage is provided with a water inlet one-way valve which can control the one-way flow of water from the water inlet passage to the pressure chamber, the water outlet passage is provided with a water outlet one-way valve which can control the one-way flow of water from the pressure chamber to the coffee brewing chamber, the cup body is provided with a piston rod with one end extending into the pressure chamber. The structure of the invention is simple, the installation is convenient, and the volume is small, the cup body does not need to be inverted when using, which is convenient to use.

A sound output device includes an acquisition unit, an ear speaker, and a sound controller. The acquisition unit acquires data of an information sound providing an operator with information. The ear speaker outputs the information sound such that sound pressure of the information sound at a position of an ear of the operator is higher than sound pressure at positions other than the position of the ear. The sound controller controls the ear speaker to emphasize the information sound more when the information sound indicates a high degree of necessity for the operator to take action against the information sound than when the information sound indicates a low degree of the necessity.

The utility model discloses a toughened glass protective film for a mobile phone display screen, which relates to the technical field of toughened films and comprises a toughened film body, an overhead sheet is arranged at the lower end of the toughened film body and is used for forming a supporting point when a mobile phone is placed, so that a sound transmission space is formed between the lower end of the mobile phone and a placing surface at the bottom; a front sound transmission hole is formed in the front end surface of the overhead sheet and is used for outward transmission of sound; when a user places a vertical screen of a mobile phone on a mobile phone support for use, the overhead sheet arranged at the lower end of the tempered film body abuts against the lower supporting surface of the mobile phone support to form a supporting point, so that a loudspeaker hole in the lower end of the mobile phone and the lower supporting surface form a sound transmission space; at the moment, sound emitted by the loudspeaker hole of the mobile phone can be transmitted to the outside through the front sound transmission hole and the sound transmission space, so that a smooth sound transmission path of the mobile phone is ensured, the loudspeaker hole is prevented from being blocked, sound transmission is blocked and the volume is obviously reduced when the vertical screen of the mobile phone is placed on the mobile phone bracket, and the use experience of a user is further improved.

The secondary battery case accommodates an electrode assembly having a structure in which electrodes and separators are alternately arranged, the secondary battery case including a first cup having a recessed shape, a second cup having a recessed shape and provided on one side of the first cup, a first peripheral portion surrounding a perimeter of the first cup when the secondary battery case is unfolded, and a second peripheral portion surrounding a perimeter of the second cup when the secondary battery case is unfolded. The first peripheral portion includes a first cup-corresponding peripheral portion that corresponds to a width of the first cup, and the second peripheral portion includes a second cup-corresponding peripheral portion that corresponds to the second cup. When viewed in a cross-sectional view in which the width of the first cup is shown, the width of the first cup is greater than a width of the first cup-corresponding peripheral portion.