66results about How to "Improve the sound effect" patented technology

The invention relates to the technical field of audio processing and loudspeaker box control technologies, in particular to a loudspeaker box control method, system and device based on a built-in sound source and a storage medium, and the method comprises the steps: obtaining a selection instruction of a user, and calling a corresponding sound source file based on the selection instruction; receiving the called sound source file by using a built-in preset audio processing algorithm, and adjusting audio parameters of the sound source file; performing deep optimization combination on the processed audio parameters corresponding to the plurality of audio source files subjected to audio parameter adjustment by using an audio mixing algorithm so as to obtain a playing audio signal; and transmitting the playing audio signal to an integrated amplification circuit for power amplification, and enhancing the signal strength to drive a loudspeaker to work. The application has the effect of improving the audio quality and the user experience.

The invention provides a method and a device for simulating a video medium by a multi-mode medium in dubbing and a readable storage medium thereof. In the dubbing field, a traditional video medium has the problems of high cost, poor flexibility and the like. According to the method, multi-mode media such as audios, pictures and texts are dynamically loaded during program running, and the video effect is simulated through specific steps. The method comprises the following steps of: initializing an item, configuring resources, requesting and analyzing data, loading a UI (User Interface) control, synchronizing the data and the control, adding an interactive operation and an extended function, and finally releasing the resources. The technology effectively reduces the cost, realizes resource sharing, improves the operation efficiency and flexibility, has cross-platform compatibility, has important practical value in dubbing and other multimedia application scenes, and can bring more efficient and convenient experience to users.

The invention relates to the field of array microphones, and discloses an array microphone assembly and an assembling method thereof.The assembly comprises a plurality of microphone bodies and further comprises a carrier plate and a supporting assembly used for supporting the carrier plate, and the carrier plate is provided with an adjusting assembly used for limiting the microphone bodies. Push rods are slidably mounted on the outer surfaces of the adjusting assemblies. When the push rod is pushed into the adjusting assembly, limiting between the adjusting assembly and the carrier plate can be relieved. According to the array microphone, through cooperation of the carrier plate, the adjusting assembly, the supporting assembly, the push rod and the like, corresponding adjustment of the height of the microphone bodies can be achieved, the distance between every two adjacent microphone bodies can be rapidly adjusted, and therefore the array microphone formed through combination can achieve a better sound emitting effect; the whole steps are concise, operation is convenient, the microphone can be effectively suitable for multiple scenes such as conferences and performances, the carrier plate and the microphone body can face downwards when the microphone is not used, and dust pollution on the microphone body can be effectively reduced.

A flute formed by a carbon fiber composite material belongs to tubular musical instruments and is provided with a cylindrical tube body, the tube body is provided with holes, the cylindrical tube body is composed of a fiber cloth inner layer, a fiber-reinforced main body layer, a fiber cloth outer layer and a surface paint layer from inside to outside in sequence, the fiber cloth inner layer and the fiber cloth outer layer are made of 3K and 330g / m < 2 > twill-woven carbon fiber prepreg cloth, and the surface paint layer is made of a surface paint layer. The fiber-reinforced main body layer is a prepreg formed by mixing fibers and resin according to a set proportion, the fibers are carbon fibers, the resin is epoxy resin, the weight ratio of the carbon fibers to the epoxy resin is 50-70: 50-30, and the length-diameter ratio of the cylindrical tube body is (30-45): 1. The raw materials are easy to obtain, the production efficiency is improved, the finished product has higher stability and durability, and constancy of the shape and the tone quality in long-term use is ensured.

The utility model discloses a vibration sounding device and electronic equipment. The vibration sounding device comprises a shell, a first magnetic circuit system, a second magnetic circuit system, a first vibration system and a second vibration system. The first magnetic circuit system comprises a central magnetic part. The first vibration system and the second vibration system are arranged on the two opposite sides of the first magnetic circuit system, the second vibration system comprises a vibrator assembly and a driving coil, the driving coil comprises two oppositely-arranged connecting edges, and the second magnetic circuit system is arranged on the side, opposite to the center magnetic part, of the driving coil. The central magnetic part comprises a first magnet and a second magnet which are adjacent and opposite in magnetizing direction, the second magnetic circuit system comprises a third magnet and a fourth magnet which are opposite in magnetizing direction, and in the first direction, the first magnet and the third magnet are the same in magnetizing direction and located on the two opposite sides of a connecting edge. And the second magnet and the fourth magnet have the same magnetizing direction and are positioned on two opposite sides of the other connecting edge. The vibration sounding device provided by the utility model has good sounding and vibration effects.

The invention relates to a multifunctional loudspeaker box table lamp and belongs to the technical field of loudspeaker box table lamps. The table lamp and the loudspeaker box are combined into a whole, the occupied area of a table top is reduced, storage and management are convenient, the weight is basically concentrated in the main control base and the loudspeaker box at the low position, and stability is good; 360-degree rotation of the table lamp supporting rod relative to the loudspeaker box with the axis of the table lamp supporting rod as a rotating shaft is achieved through the rotating connecting base, 180-degree swing of the rotating connecting assembly with the hinge shaft of the hinge head as the axis is achieved through the hinge head, and 360-degree rotation of the table lamp holder with the axis of the rotating connecting assembly as a rotating shaft is achieved through the rotating connecting assembly. The requirement for all-direction illumination in daily illumination can be met, and adjustment is convenient and fast; the supporting disc ensures that sound waves of the bass loudspeaker can be smoothly spread downwards, meanwhile, the sound waves are guided, diffused and spread through the conical structure, vibration formed by multiple times of reflection of the sound waves between the structures is avoided, equipment vibration caused by potential energy of the sound waves is effectively reduced, equipment stability is ensured, and the sound effect is improved.

The invention discloses a sound production device and electronic equipment, the sound production device comprises an outer side magnetic assembly, an inner side magnetic assembly and a vibration assembly, a magnetic gap surrounding the inner side magnetic assembly is formed between the outer side magnetic assembly and the inner side magnetic assembly, the vibration assembly comprises a voice coil, the vibration assembly is supported on the outer side magnetic assembly, and the voice coil is suspended in the magnetic gap; the inner side magnetic assembly comprises a first inner side magnet and a second inner side magnet which are stacked in the vibration direction of the voice coil, opposite magnetic poles of the first inner side magnet and the second inner side magnet are a first magnetic pole and a second magnetic pole respectively, the first magnetic pole and the second magnetic pole are the same in polarity, and the outer side magnetic assembly is provided with a third magnetic pole; the third magnetic pole is respectively matched with the first magnetic pole and the second magnetic pole, and the polarity of the third magnetic pole is opposite to that of the first magnetic pole. According to the scheme, the problem of poor sound performance caused by relatively small power BL value of the sound production device in the related technology can be solved.

The invention discloses a buzzer driving circuit, comprising a power supply control circuit, an oscillation control circuit and an oscillation circuit. When the power supply control circuit is turned on, the oscillation control circuit controls the oscillation circuit to oscillate and generate a first sine wave signal and a second sine wave signal with the same frequency and opposite phase at two ends of the buzzer. The oscillation circuit of the buzzer driving circuit oscillates and generates a first sine wave signal and a second sine wave signal at two ends of the buzzer. The oscillation control circuit performs stable closed-loop control on the oscillation circuit, so that the waveform of the oscillation circuit is stable when working, and a standard sine wave is generated at two ends of the buzzer. The buzzer can be driven to sound without the need for the MCU to output PWM, thereby reducing the IO port occupation of the MCU and saving the resources of the MCU; in addition, the standard sine wave acts on the two ends of the buzzer, and the sound of the buzzer is soft and crisp, which is better than the sound effect of the buzzer driven by PWM, and there is no noise, thereby improving the sound quality of the buzzer.

The utility model provides a self-sounding projection screen, and relates to the field of projection screens. The self-sounding projection screen comprises an annular mounting frame, the annular mounting frame is used for being connected with a wall, a projection curtain used for receiving and displaying images is arranged on the inner side of the annular mounting frame, and the annular side of the projection curtain is connected with the inner side of the annular mounting frame; the annular mounting frame is also provided with a sound amplification box, and the sound amplification box is used for outputting audio information of the image. According to the utility model, the problem that the traditional projection curtain cannot make sound autonomously is solved, the number of components of the multimedia audio-visual system is reduced, and the multimedia audio-visual system is convenient to carry. The projection screen adopts a flexible screen to replace a traditional hard screen, so that the use safety is higher, and the whole body is thinner.

The application discloses a kind of folding screen electronic equipment, belongs to folding screen electronic equipment technical field.Folding screen electronic equipment includes shell assembly, screen module, speaker module and sound guide pipe;Screen module is set to shell assembly, and screen module is surrounded with shell assembly to form inner cavity;Speaker module is provided with first sound hole, and speaker module is set in inner cavity;Sound guide pipe is arranged between screen module and shell assembly, and sound guide pipe extends along the edge of screen module, and sound guide pipe forms sound guide passage and multiple second sound holes, and sound guide passage is communicated with first sound hole, and the sound emitted by speaker module is transmitted to the micro gap sound hole of shell assembly through sound guide passage and multiple second sound holes.

The utility model discloses a kind of magnetic shaft structures that can sound, including base, the upper cover being set on base, the guide core being movably set between base and upper cover, and the elastic member being sleeved between base and guide core, further including the magnet being sleeved on the bottom of the guide core, the lower end of guide core is formed with magnetic installation groove, the middle part of magnetic installation groove is formed with the sound column extending towards base direction;Magnet is overall circular ring column shape, it is embedded in the magnetic installation groove, wherein hollow part is sleeved on the periphery of sound column;The lower end of sound column penetrates through magnet lower end surface and continues to extend downward, and its downward extending portion is impacted base to sound under the action of external force.The utility model provides a kind of magnetic shaft structures that can sound, guide core is impacted on base when being pressed and moved downward, magnet is sleeved on guide core, so as to realize good sound effect in the case where magnet is not damaged and the transmission accuracy is guaranteed, improve the use experience of user.

The present application discloses a sound-generating device and an electronic device, and relates to the technical field of sound-to-electric conversion. The sound-generating device includes a sound-generating component, a fixed bracket, a rotating bracket, and a sound guide, wherein the fixed bracket is connected to the sound-generating component; the rotating bracket is rotatably connected to the fixed bracket, and the rotating bracket is provided with a sound outlet; the sound guide connects the sound-generating component and the sound outlet; when the rotating bracket is in a first position relative to the fixed bracket, the sound outlet direction of the sound outlet is a first sound outlet direction; when the rotating bracket is in a second position relative to the fixed bracket, the sound outlet direction of the sound outlet is a second sound outlet direction, and the first sound outlet direction is different from the second sound outlet direction.

The utility model relates to diaphragm technical field, concretely is a kind of novel elastic composite flat diaphragm, the flat diaphragm includes support and diaphragm component, hollow hole is opened in the support, the diaphragm component is fixed on support, and hollow hole is completely shielded, the diaphragm component includes elastic membrane layer and the metal layer being arranged on the upper and lower ends of elastic membrane layer, electrically conductive coil is arranged at hollow hole on the metal layer, the both ends of electrically conductive coil are all provided with conducting point, and the conducting point and electrically conductive coil are electrically connected, and the protective layer is provided on the end face of electrically conductive coil away from metal layer. The utility model has simple structure, reasonable in design, diaphragm sound production effect is good, service life is long, and electrically conductive coil resistance adjustable, satisfy the use demand of different products, it is worth promoting and using.

The utility model discloses a coated mixed reality flight simulation helmet, which belongs to the field of mixed reality and comprises a shell assembly, a display module, a main control board, an earphone module, a visual camera, a display module adjusting and locking device, a microphone, an external cable plug and a ventilation and exhaust system. The utility model has the following advantages: the coating is firm, the comfort is better, the audio-visual immersive experience is better, the talkback interaction can be carried out, the manual operation is more convenient, and the later function is convenient to increase.

This utility model discloses a dual-function over-ear headphone, relating to the field of headphones. It includes a headband, with an earphone body connected to the bottom of the headband. A sponge pad is connected to the side of the earphone body, and a microphone is installed on the side of the earphone body away from the sponge pad. A mounting groove is formed on the side of the mounting groove, and a miniature air pump is installed inside the mounting groove. The output end of the miniature air pump is connected to a connecting pipe, which passes through and connects to the side of the airbag ring. A compression ball slides inside the telescopic groove. In this dual-function over-ear headphone, the airbag ring can expand inside the mounting groove after being supplied with gas. When the airbag ring expands, it can compress the side walls of the waterproof membrane and waterproof mesh fabric, improving the sealing effect of the earphone body. When the sponge pad is pulled, it can cause the sliding block to slide out of the L-shaped groove, and at the same time, the fixing block will also slide out of the surface of the fixing ring, allowing the sponge pad and the earphone body to be separated and disassembled, improving the convenience of using the headphones.

The utility model relates to the technical field of sound equipment, in particular to an anti-interference waterproof sound equipment, which comprises a shell structure and a sound equipment assembly, the shell structure is a plastic shell to ensure waterproofness, two sides of the shell structure are respectively provided with a closed wiring channel, and correspondingly, interfaces of a power line and a signal line are respectively arranged on two sides of the rear part of the shell structure. The sound assembly comprises a control circuit board and a loudspeaker, the control circuit board is arranged in the middle of the shell structure, the two ends of the control circuit board are connected with the power line interface and the signal line interface respectively, and the signal line and the power line are both metal braided shielding lines. The power line and the signal line are both connected with filters, the control circuit board is arranged in a partitioned mode, high-noise components are arranged in independent partitions, metal shielding covers are arranged on the partitions so as to reduce electromagnetic radiation and interference, and therefore an isolation installation area is correspondingly arranged in the shell structure, the isolation effect is achieved, and the waterproof effect can also be achieved.

The horn assembly comprises a main horn and an auxiliary horn, the main horn is provided with an upper seat plate and a lower seat plate, a left horn part and a right horn part are connected between the lower seat plate and the upper seat plate, the left horn part is provided with a big-end-up left sound inlet channel, and the right horn part is provided with a big-end-up right sound inlet channel. The upper seat plate is provided with a left sound outlet communicated with the left sound inlet channel and a right sound outlet communicated with the right sound inlet channel, the lower seat plate is provided with a left sound inlet communicated with the left sound inlet channel and a right sound inlet communicated with the right sound inlet channel, and the lower side of the lower seat plate is connected with a first sound production element facing the left sound inlet and the right sound inlet. The auxiliary horn is located between the left horn part and the right horn part, the top of the auxiliary horn is connected to the upper seat plate, the auxiliary horn is provided with a middle sound inlet channel, the bottom of the auxiliary horn is connected with a second sound production element facing the lower port of the middle sound inlet channel, the upper seat plate is provided with a middle sound outlet communicated with the middle sound inlet channel, and the horn assembly is compact in structure and good in sound production effect.

The invention discloses an automobile sound insulation carpet processing technology and an automobile carpet. The automobile sound insulation carpet processing technology comprises the following steps: S1, material selection; s2, mixing the materials; s3, material cutting; s4, bonding; s5, detecting and sub-packaging: preparing the following materials: cotton cloth, ethylene propylene diene monomer, natural rubber, a foam board, a plasticizer, an accelerant, an adhesive, polytetrafluoroethylene and a filler, the plasticizer is prepared by mixing fatty acid ester, phthalate and non-phthalate according to a ratio of (1-8): (2-8): (1-5), the accelerant is prepared by mixing zinc chloride, magnesium chloride and diaminobenzene, and the filler is prepared by mixing sodium hydroxide, sodium hydroxide and sodium hydroxide; the ratio of the modified rubber to the foam board is (2-5): (1-9): (1-6), the sound insulation performance of the carpet can be enhanced by adding the modified rubber and the foam board to the inner side of the carpet, the comfort and the sound effect can be greatly improved, the driving and riding experience is remarkably improved, and the top of the carpet is coated with polytetrafluoroethylene, so that the carpet has extremely low surface energy and excellent hydrophobicity and pollution resistance, and is suitable for being popularized and applied. And the cleanliness of the carpet is improved.

The building material (1) is a building material (1) facing a first space, and includes: a plate-shaped structure (14) having openings (15, 16); a first speaker (21) disposed at a position opposite to the openings (15, 16) in a second space opposite to the first space with the structure (14) interposed; and a three-dimensional net-shaped structure (30) disposed between the structure (14) and the first speaker (21) and composed of fiber-shaped members intertwined in three dimensions.

The utility model discloses a loudspeaker grille for a vehicle, and belongs to the technical field of automobile accessory grilles. A round groove penetrating front and back is formed in the center of a main body plate, a first fixing ring is fixedly connected to the interior of the round groove, a second fixing ring is connected to the back face of the first fixing ring, a grating cover is arranged on the inner side of the first fixing ring, clamping pieces are connected to the periphery of the outer surface of the grating cover, and the front faces of the clamping pieces are attached to the back face of the first fixing ring. The movable strip is pushed upwards, the pressing ring is pressed backwards, the front end of the extrusion rod is far away from the clamping piece, at the moment, the clamping piece is unfixed, the grille cover is rotated clockwise, the clamping piece is aligned with the open groove, and then the grille cover can be taken out to be cleaned, so that the grille cover is convenient to disassemble and clean, and the cleaning efficiency is improved. The situation that dust is easily gathered in the grating after long-time use and grating holes are blocked is avoided, and the sound output effect of the loudspeaker is improved.

The invention discloses an electronic sound production device which comprises a shell, a vibrating diaphragm and an energy conversion assembly matched with the shell. The transduction assembly comprises a linear micro-wire segment element and a magnetic element, the linear micro-wire segment element is provided with a base material, a plurality of metal wire segments in the same direction are manufactured on the base material, a gap is formed between every two adjacent metal wire segments, and the two ends of each metal wire segment are connected with power connection parts arranged on the base material respectively; the number of the magnetic element is at least one, and the magnetic element is used for forming a magnetic field penetrating through the linear micro-segment element; the vibrating diaphragm is connected with the linear micro-segment element, and the vibrating diaphragm moves along with the linear micro-segment element. The electronic sounding device has the advantages of small size and light weight, and the driving effect of the transduction assembly is strong, so that the sounding effect of the electronic sounding device is good.

The invention discloses a vehicle-mounted sound effect adaptation method and electronic equipment, and the method comprises the steps: carrying out the audio separation of a to-be-played audio, obtaining a plurality of audio clips, and enabling different audio clips to correspond to different types of audio data; performing emotion recognition on a driving object corresponding to the target vehicle to obtain an emotion recognition result; wherein the target vehicle is provided with an audio player; calculating an output proportionality coefficient corresponding to each audio clip based on the emotion recognition result; and outputting each audio clip to an audio player for playing according to the output proportionality coefficient. According to the method, the audio playing effect can be automatically adjusted according to the emotion of the driving object, so that the sound effect of the currently played audio and the adaptation degree of the driving object are improved, and the vehicle driving or riding feeling of the driving object is improved.

The present invention provides a manual oil unloading valve with a state monitoring device and a method for using the same, which relates to the technical field of manual oil unloading valves, including a valve body and an oil outlet, wherein the valve body is fixedly connected to the oil outlet by means of a plurality of bolts, the inner wall of the valve body is fixedly connected to a bracket, one side of the bracket is slidably connected to an adjusting rod, one end of the adjusting rod close to the oil outlet is fixedly connected to a valve plate, the valve plate abuts against the inner wall of the oil outlet, the inner wall of the valve body is fixedly connected to an auxiliary ring, a center spring is fixedly connected between the auxiliary ring and the valve plate, an assembly seat is provided on the surface of the valve body, the assembly seat is rotatably connected to a valve stem, one end of the valve stem is fixedly connected to an auxiliary rod, and the valve body is rotatably connected to a handle by means of the auxiliary rod. The present invention allows the user of the tank truck to monitor the opening and closing state of the manual oil unloading valve in real time, discover theft in time, and avoid oil product loss.

The utility model discloses a horn type bookshelf sound box, which comprises a floor frame and a box body, the floor frame is detachably connected with the box body, the horn type bookshelf sound box further comprises an alto sound production structure, the alto sound production structure is positioned at the top of the box body and is completely arranged outside the box body, and the alto sound production structure is detachably connected with a top plate of the box body. The alto sound production structure comprises a horn-shaped basin frame and a voice coil, the basin frame contraction end of the horn-shaped basin frame is in contact with the voice coil, and the section diameter of the open end of the basin frame is far larger than that of the basin frame contraction end. The horn type bookshelf sound box disclosed by the utility model has the beneficial effects that the alto sound production, the bass sound production and the treble sound production are separately designed, so that the overall sound field effect is improved.

The invention provides a support assembly, a vehicle glass assembly and a vehicle, and relates to the technical field of automobile spare parts, the support assembly comprises a support body and a sound production module, the support body comprises a substrate, a fixed seat arranged back to vehicle glass and a bonding surface arranged facing the vehicle glass, the fixed seat is arranged on the substrate and is provided with a first connecting part, and the bonding surface is provided with a second connecting part; the sound production module is connected to the first connecting part. The sound production module can be integrated to the support body, space resources near the windshield are fully utilized, occupation of other areas in the automobile is avoided, the sound effect is improved, it is ensured that the original functions of the support body and the automobile driving sight are not affected, and the driving safety of the automobile is improved. The space utilization efficiency of the support body is improved, and the layout and performance of the vehicle-mounted sound system are optimized.

The present invention discloses a receiver and an assembly method thereof. The receiver includes a shell, a diaphragm mechanism, an electromagnetic drive mechanism and a magnetic generator. The diaphragm mechanism is arranged in the inner cavity of the shell, and the inner cavity is divided into a sound-generating cavity and an installation cavity. The electromagnetic drive mechanism is arranged in the installation cavity, and includes an armature. The armature has a fixed arm and a free arm connected thereto. An electromagnetic coil is sleeved on the fixed arm, and the free arm is connected to the diaphragm mechanism. The magnetic generator includes a first magnetic generator and a second magnetic generator, which are arranged on both sides of the free arm and are used to cooperate with the electromagnetic coil to drive the free arm to vibrate, thereby driving the diaphragm mechanism to generate sound. The receiver provided by the present invention fixes the diaphragm mechanism and the electromagnetic coil to two different arms of the armature, so that the electromagnetic coil has sufficient installation space without affecting the installation of the diaphragm mechanism, and the magnetic field strength is greatly enhanced, thereby improving its sensitivity. In addition, the assembly method is simple and the assembly efficiency is high.

The invention relates to the technical field of musical instrument materials and structures, in particular to a fiddlestick based on bamboo materials and a processing technology of the fiddlestick. The fiddlestick comprises a fiddlestick rod, a fiddlestick head, a horsetail box, fiddlestick hair and accessories, the bow rod is fixedly connected with the bow head; the horsetail box is mounted on the bow rod; the bow hairs are arranged between the bow head and the horsetail box; the bow rod and / or the bow head are / is formed by splicing and bonding a plurality of bamboo materials; the bamboo material is a bamboo block prepared by taking tea stem bamboos as a raw material; the density of the bamboo material is 0.75-0.85 g / cm < 3 >, the dynamic Young modulus is 1.2-2.0 * 10 < 11 > N / cm < 2 >, and the sound conduction speed at normal temperature and normal pressure is 11000-15000m / s; the fiddlestick adopts common tea-stem bamboos as raw materials, is low in cost, wide in source and excellent in performance (especially timbre), and is suitable for replacing a Brazilian sappan fiddlestick for large-scale application.

The utility model discloses a noise reduction horn structure, which comprises a frame, a cone is arranged on the inner ring of the frame, a damper is arranged on the right side of the inner wall of the frame, a voice coil is connected to the right side of the frame in a penetrating manner, a washer and a magnet are sleeved on the outer ring of the voice coil, the washer is positioned on the left side of the magnet, and a T iron is arranged on the right side of the magnet. The outer ring of the basin frame is sleeved with a shielding sleeve, a filling groove is formed between the inner wall and the outer wall of the shielding sleeve, the inner cavity of the filling groove is filled with a ferrite material, the outer ring of the shielding sleeve is sleeved with a protective sleeve, a buffer groove is formed between the inner wall and the outer wall of the protective sleeve, and the inner cavity of the buffer groove is filled with a spring. When the structure is used, the ferrite material is used as a non-metal magnetic material and can absorb electromagnetic waves outside the loudspeaker, so that a good electromagnetic shielding effect can be provided, a voice coil in the loudspeaker can be prevented from being interfered by the external electromagnetic waves during working, background noise can be avoided, and the sound effect of the loudspeaker can be improved.

The present application provides a sound-generating device and a method for manufacturing the same, and a display device, and relates to the field of display technology. The sound-generating device includes: a substrate; a first electrode layer, a vibration layer, and a second electrode layer located on the substrate; wherein the vibration layer includes a first vibration sublayer and a second vibration sublayer, the first electrode layer is located on a side of the first vibration sublayer away from the second vibration sublayer, and at least part of the first electrode layer is in contact with the surface of the substrate close to the vibration layer, and the second electrode layer is located between the first vibration sublayer and the second vibration sublayer. The sound-generating device has a simple structure, a simple manufacturing process, and a low cost. The display device has a good sound effect and can realize screen sound.

The embodiment of the application provides a magnetic attraction charging projector sound box, which comprises at least two external sound boxes, a battery module is arranged in the external sound box, and a magnetic attraction element and a power receiving coil are arranged on one side of the external sound box. A projector body is used for cooperating with the external sound box, at least two sides of the projector body are provided with a magnetic attraction cooperation element and a power transmission coil; the magnetic attraction cooperation element corresponds to the magnetic attraction element in position, the power transmission coil corresponds to the power receiving coil in position, the external sound box is magnetically attracted and connected with the projector body, and the projector body charges the external sound box when magnetically connected; WIFI communication is performed between the projector body and the external sound box. By increasing the external sound box on the projector body, it is not necessary to be limited to the small space built-in the projector body, that is, a loudspeaker module is increased outside the projector body, so that the number of loudspeakers is increased and the quality of the loudspeakers is improved, so that the audio effect is improved. The external sound box and the projector body are magnetically connected, and are convenient to disassemble.