42results about How to "High vocal efficiency" patented technology

A display device includes a display panel; a support structure at a rear of the display panel; a sound generation actuator supported by the support structure and configured to vibrate the display panel to generate sound; and a cap member surrounding the sound generation actuator and secured to the support structure at an area of the support structure, the area being near the sound generation actuator.

The present invention relates to a sound box used for loudspeakers, in particular to the television sound box of a loaded double folding type acoustic horn. A casing body is provided with loudspeakers according to the technical proposal provided by the present invention. The present invention is characterized in that the casing body comprises a middle casing body and an internal casing body, wherein the middle casing body has a bottom part and a loudspeaker shaped side wall expanding outwards, and mounting holes used for the installation of loudspeakers are arranged at the center of the bottom part of the middle casing body; the internal casing body is positioned in the middle casing body, also has a bottom part and a loudspeaker shaped side wall, the opening of the internal casing body is pointed at the bottom part of the middle casing body, and an acoustic horn cavity folded forwards is formed between the internal casing body and the middle casing body. The present invention adopts an entire frequency band loudspeaker unit, to enhance the sound pressure of the loudspeaker unit and the efficiency of low frequency band better, thus enhancing the acoustic quality of television sound boxes.

The invention discloses an echo koto which comprises a koto box, a front Yueshan (1), a rear Yueshan (2), string columns (3), threads (4) and string nails (5), wherein the koto box is composed of a face plate (6), a front side plate (7), a rear side plate (8), a bottom plate (9), a koto head (10) and a koto tail (11), a beam frame (12) used for supporting the face plate is arranged inside the koto box, a plurality of pronunciation holes are formed in the bottom plate, two circular pronunciation holes (6.1) are formed in the face plate, a cellular board (13) with dense round holes is embedded inside the koto box, four elliptical pronunciation holes (9.1) are formed in the bottom plate, four pronunciation holes (13.1) which are the same with the pronunciation holes in the bottom plate in shape are also formed in the cellular board, and the pronunciation holes in the cellular board and the pronunciation holes in the bottom plate are arranged in a staggered manner. According to the echo koto provided by the invention, the cellular board is embedded in the koto box, the elliptical pronunciation holes in the cellular board and the pronunciation holes in the bottom plate are formed in a staggered manner, so that the audio penetrating power is enhanced.

A thermoacoustic device comprises a thermogenic device and a thermoacoustic element. The thermogenic device is used for providing energy to the thermoacoustic element to make the thermoacoustic element generate heat. The thermoacoustic element comprises a graphene film. The invention further provides an electronic device using the thermoacoustic device.

The invention discloses an open pronouncing device including, a magnetic steel with splint, a T-shaped soft iron core, a spring plate and a driving coil, in which, the driving pole is installed on the bottom of the coil, under which, a balance film maintaining the pronouncing device stable is fixed. The T-shaped soft iron core incases in the middle alnico and splint, which forms a certain slot. The connection of driving coil and spring plate fixes in the slot and can move reciprocating through electromagnetic effect. When getting through the driving current, the driving coil generates electromagnetic effect with iron core, alnico and splint, from which, kinetic energy will be conveyed by driving pole. If it is placed on any plane, kinetic energy will be transmitted to the plane and give out sound and cause surface resonate.

The present invention relates to a sound box used for loudspeakers, in particular to the television sound box of a loaded double folding type acoustic horn. A casing body is provided with loudspeakers according to the technical proposal provided by the present invention. The present invention is characterized in that the casing body comprises a middle casing body and an internal casing body, wherein the middle casing body has a bottom part and a loudspeaker shaped side wall expanding outwards, and mounting holes used for the installation of loudspeakers are arranged at the center of the bottom part of the middle casing body; the internal casing body is positioned in the middle casing body, also has a bottom part and a loudspeaker shaped side wall, the opening of the internal casing body is pointed at the bottom part of the middle casing body, and an acoustic horn cavity folded forwards is formed between the internal casing body and the middle casing body. The present invention adopts an entire frequency band loudspeaker unit, to enhance the sound pressure of the loudspeaker unit and the efficiency of low frequency band better, thus enhancing the acoustic quality of television sound boxes.

The invention relates to hollow bases of series of Qinhu, which is characterized in that the hollow bases are produced by selected mum SPP and Acer mono, the two sides of the base and the middle are stitched into rectangular opening groove type the same as the type of the bottom of the Qin cylinder respectively with mum SPP and Acer mono, the two lateral plates of the bases and the Qin cylinder are equipped with a gap, a rectangular dent is arranged in the middle of the plane in the base, the outer of the base is coated with black enamel paint. The hollow base has the advantages and effects that resonating cavity can be increased to avoid the blocking of the voice vibration, causes the happening of voice richer, the overtone is rich, the fading speed of voice is reduced, integrally increases resonant vibration function, which is favorable for strengthening sound volume, increasing sounding efficiency, adding reverberation effect and prolonging the time of the lingering sound.

The invention relates to a key-press input module which comprises a motor vehicle horn key-press, a stabilivolt tube DW2, a resistance R3 and a resistance R4, wherein one end of the motor vehicle horn key-press is connected with the power output positive end or the power output negative end of a motor vehicle battery jar, the other end of the motor vehicle horn key-press is connected with a digital signal input end IN1 of a single chip microcomputer through the resistance R3, the digital signal input end IN1 of the single chip microcomputer is also connected with a digital signal output end O1 through the resistance R4 and also the cathode of the stabilivolt tube DW2, the anode of the stabilivolt tube DW2 is in grounding, and one end of the motor vehicle horn key-press is connected with the power output positive end or the power output negative end of the motor vehicle battery jar through a single-pole double-throw switch. The invention provides the key-press input module which has the advantages of simple structure and convenient use.

A thermal sounding device comprises a substrate, wherein the thermal sounding device further comprises at least one heating device and multiple thermal sounding elements, the multiple thermal sounding elements are respectively arranged on the substrate, the heating device is used for providing energy to the thermal sounding elements to enable the thermal sounding elements to produce heat, each thermal sounding element comprises a composite film, and the composite film comprises at least one carbon nano tube layer and at least one graphene film with the carbon nano tube layer and the graphene film being stacked over each other. The invention further provides an electronic device using the thermal sounding device.

The invention relates to a miniature dual-drive broadband signal sounder of an automobile. The miniature dual-drive broadband signal sounder comprises two drivers. The two drivers share a bottom board and a plastic housing arranged on the bottom board, two cavities which are bilaterally symmetrical with each other are formed between the bottom board and the plastic housing, circuit boards, iron cores, coils, magnetic rings, membranes and mass slices are arranged in the cavities, the iron cores are arranged on the circuit boards, the coils are wound on the iron cores, the magnetic rings are arranged on the iron cores, the membranes are supported by the magnetic rings, the mass slices are arranged on the membranes, front cavities are formed between the plastic housing and the membranes, inner cavities are formed between the membranes and the iron cores, rear cavities are formed between the circuit boards and the bottom board, through holes are formed in the iron cores and the circuit boards, the inner cavities are communicated with the rear cavities via the through holes, and two sound production holes which are bilaterally symmetrical with each other are formed in the center of the upper wall of the plastic housing. The miniature dual-drive broadband signal sounder has the advantages that the miniature dual-drive broadband signal sounder is provided with the two drivers, the rear cavities are communicated with the inner cavities, accordingly, different frequencies can be generated by the signal sounder, the response frequency range of the signal sounder can be greatly broadened, the sound production efficiency of the signal sounder can be greatly improved, the transmitted sound volume of the signal sounder can be greatly increased, and the service range of the signal sounder can be extended.

The invention relates to a power amplification circuit for a thermally induced sound-producing device, which comprises a peak holding circuit, an addition and subtraction circuit and a power amplifier. The peak holding circuit is used for receiving an audio electrical signal and outputting a peak holding signal; the addition and subtraction circuit is used for receiving the audio electrical signal and the peak holding signal, comparing the audio electrical signal and the peak holding signal, carrying out calculation and then outputting a modulation signal; and the power amplifier is used for receiving the modulation signal and amplifying and outputting the modulation signal. The invention also relates to the peak holding circuit and the thermally induced sound-producing device.

A thermal sounding device comprises a substrate with a network structure, a thermal sounding element arranged on the surface of the substrate, and a heating device used for providing energy to the thermal sounding element to enable the thermal sounding element to produce heat, wherein the substrate comprises at least one lineage structure, the at least one lineage structure comprises a carbon nano tube lineage structure and an insulation layer positioned on the surface of the carbon nano tube lineage structure, the thermal sounding element comprises a composite film, and the composite film comprises at least one carbon nano tube layer and at least one graphene film with the carbon nano tube layer and the graphene film being stacked over each other. The invention further provides an electronic device using the thermal sounding device.

A thermoacoustic device comprises a substrate, and the thermoacoustic device further comprises at least one thermogenic device and a plurality of thermoacoustic elements, wherein the plurality of thermoacoustic elements are separately arranged on the substrate, the thermogenic device is used for providing energy to the thermoacoustic elements to make the thermoacoustic elements generate heat, and at least one of the plurality of thermoacoustic elements comprises a graphene film. The invention further provides an electronic device using the thermoacoustic device.

The invention provides a differential driving structure, a screen and electronic equipment. The differential driving structure comprises a central assembly; at least four groups of peripheral components which are uniformly arranged around the central component, wherein the distances between the peripheral components and the central component are the same; the actuating directions of all the peripheral components are the same, and the actuating directions of the central component and the peripheral components are opposite. According to the invention, through a differential driving mode, the driving directions of the same sound production area are opposite at any time through the two groups of actuating assemblies with opposite driving directions, so that the vibration amplitude of the sound production area is improved, the sound production efficiency is improved, and a high-quality screen sound production effect is realized.

A thermal sounding device comprises a substrate, a thermal sounding element arranged on the surface of the substrate, and a heating device used for providing energy to the thermal sounding element to enable the thermal sounding element to produce heat, wherein the thermal sounding element comprises a composite film, the composite film comprises at least a first carbon nano tube layer and at least one graphene film with the first carbon nano tube layer and the graphene film being stacked over each other, the substrate comprises a carbon nano tube composite structure, and the carbon nano tube composite structure comprises a second carbon nano tube layer and an insulation material layer coated on the surface of the second carbon nano tube layer. The invention further provides an electronic device using the thermal sounding device.

The invention relates to a control method of an electric horn, in particular to an advanced acoustic pressure level stabilizing control method of an electric horn. The method comprises the following steps: firstly, the vibration strength of the vibration membrane of the electric horn is detected by a detecting device; the output signal value of the detecting device is compared with the set outputsignal value by utilizing a singlechip; the duty ratio of the driving signals of the electric horn is enlarged if the actual vibration strength of the vibration membrane of the electric horn is less than the set vibration strength, and otherwise, the duty ratio of the driving signals of the electric horn is reduced; the adjusting course is repeated until the deviation between the output signal value of the detecting device and the set output signal value is less than or equal to the set deviation value; the currently determined duty ratio value is taken as the duty ratio value of the current driving signals of the electric horn; and the driving signals of the electric horn is square wave signals. The invention provides the advanced acoustic pressure level stabilizing control method of theelectric horn capable of automatically stabilizing the acoustic pressure level and an intelligent control method of the electric horn capable of automatically adjusting the driving frequency in real time, automatically stabilizing the acoustic pressure level and with the functions of environment protection and sound production.

A plannar serial magnetic circuit includes a first magnetic field forming part formed by a magnetic inductive sheet, a first magnet stacked on upper part of the magnetic inductive sheet and a first electrode sheet; a second magnetic field forming part formed by a second electrode sheet, a second magnet stacked on upper part of magnetic inductive sheet which is used in common with the first magnetic field forming part. The second magnetic field forming part is set on outer-ring of the first one and a magnetic gap is also set according to the rule and the polarity of the first magnet is opporsite to the secone one so that the energy exchanging device of electric-mechanical-sound can be formed by the magnetic circuit and electric conductive wire or coil elongated in the gap as well as a vibration membrane, a cover plate and attachment.