46results about How to "Reduce howling" patented technology

The invention relates to a brake system of an empty container forklift. The brake system of the empty container forklift comprises a braking oil tank, a gear pump, a prefill valve, a reducing valve, a two-position three-way electromagnetic valve, a gearbox clutch, a first bag type accumulator, a right-foot brake valve, a left-foot brake valve, a shuttle valve, and a stopping brake valve block. A brake oil radiator, the brake oil tank, an overflow valve, a second bag type accumulator and a backpressure valve are additionally arranged in the system. Through adding of the brake oil radiator, the temperature of the whole brake system is effective controlled to be around 60 DEG C, and therefore a sealing part of the whole brake system is well protected. Through adding of the brake oil tank, hydraulic oil which is not suitable for brake friction is not applied to the brake system, and heavy-load wet-type axle brake liquid which is specially prepared is used, so that howling generated by a friction piece and a partition piece in a drive axle is reduced in the process of brake, the whole vehicle brake distance is shortened, and reliability of the whole brake system is improved.

The invention discloses a hydraulic control flow valve, which comprises a main valve core and a main valve body, wherein the main valve core is arranged in a main valve sleeve; the main valve sleeve is arranged in a main valve body stepped hole; an oil outlet sleeve is arranged in the main valve body stepped hole below the main valve sleeve; seal rings are arranged between the oil outlet sleeve and the main valve sleeve as well as between the oil outlet sleeve and the main valve body; a sealing member is also arranged between the main valve core and the main valve sleeve; an overflow valve insert and a pressure compensation insert are assembled on the main valve body through threads in a matching way; a cover plate is arranged above the main valve sleeve and is provided with a pressure gauge and an exhaust valve; and seal rings are arranged between the cover plate and the main valve sleeve and at the junction of the cover plate and a main valve body control oil path hole. The hydraulic control flow valve has the advantages of simple structure, convenience in processing, repair and replacement, stable and reliable speed adjustment, good sealing property, simple pipeline connection,small occupied space, convenience in observation and control of pressure and flow, small squeal during work and small jitter of the main valve core. The hydraulic control flow valve is mainly appliedto a drainage system of a liquid cargo ship and the like.

Disclosed is a wireless MIC system for automatically paring, which comprises a wireless MIC which includes a paring button at its one side and facilitates a connection mode as it is automatically paired with an amplifier by transmitting a paring request signal when the paring button is on, and initializes a connection related information stored in a storing part when the connection mode is cancelled and converts an acoustic signal into a digital audio signal and transmits to the paired amplifier; and an amplifier which facilitates a connection mode as the wireless MIC and the amplifier are paired by setting a transmission and receiving channel of the amplifier and the wireless MIC, and amplifies a digital audio signal from the wireless MIC and outputs in an acoustic form.

The invention provides a design method and a design device of a feedback filter and an earphone. The design method comprises the following steps: acquiring a transfer function of a secondary channel of the earphone in at least one working state; determining a nominal system transfer function and a first weight function of the earphone based on the transfer function of the secondary channel; determining a second weight function based on the noise reduction expectation of the earphone; and determining parameters of the feedback filter based on the first weight function, the second weight function and the nominal system transfer function. Compared with a design method of a feedback filter in the prior art, the parameters of the feedback filter are determined through the transfer functions ofthe secondary channels in the multiple working states, so that the earphone is kept stable in the multiple working states, howling is reduced, and robustness is enhanced under the condition that noiseis kept low.

The invention discloses a communication method and device of a mobile terminal and belongs to the communication technical field. The communication method and device are used for a mobile terminal in an intercom group. The method includes the following steps that: whether communication start information broadcasted by the other terminal in the intercom group based on a short-range communication mode is monitored is judged; when the communication start information broadcasted by the other terminal based on the short-range communication mode is monitored, initial volume is reduced to preset volume; and intercom signals sent by the other terminal are received. When a distance between a two mobile terminals is short, the two mobile terminals generate sound interference, and as a result, a problem that communication cannot be performed normally can be brought about, while, with the communication method and device adopted, the problem can be solved, and the sound interference can be reduced, and communication quality can be improved. The communication method and device are used for an intercom group.

The invention relates to a method for controlling motion mechanisms used on laser cutting equipment. The method comprises the following steps: (1) setting PID parameters as static PID parameters; (2) judging whether a motion instruction exists, changing the PID parameters into kinetic PID parameters and controlling the motion of a motion mechanism if so, otherwise continuing to judge whether the motion instruction exists; and (3) judging whether the motion of the motion mechanism is finished, setting the PID parameters as the static PID parameters again if so, otherwise continuing to judge whether the motion of the motion mechanism is finished. As the PID parameters are divided into the static PID parameters and the kinetic PID parameters according to the motion state of the motion mechanism, the technical problem that system indexes need to be reduced as the prior art uses fixed PID parameters causing the motion mechanism to have large deviation and vibration or squeals.

The invention discloses a noise-reducing saw blade for timber cutting. The noise-reducing saw blade comprises a copper core plate, a plurality of air holes are formed in the outer circumference of thecopper core plate, cutting disks are arranged on two sides of the copper core plate and provided with fixing holes penetrating the copper core plate, the outer edges of the cutting disks extend outwards to go beyond the outer edge of the copper core plate, a plurality of rubber posts surrounding the copper core plate are arranged between the two cutting disks, flared elastic bodies are arranged at two ends of the rubber posts, threaded rods are arranged in the rubber posts, the two cutting disks are fixed to two ends of the threaded rods and are connected with the copper core plate through pins penetrating a plurality of surrounding fixing holes, a plurality of saw teeth are arranged on the outer circumferential faces of the cutting disks, 10-15 saw teeth are designed in a group, an inwardly extending noise-reducing seam is formed in the root of one of each saw tooth group, and noise-reducing pillars are inlaid into the ends of the noise-reducing seams. The noise-reducing saw blade for timber cutting is not prone to being overheated and causing fire and long in service life without sharp noise.

The invention belongs to the field of a turbocharger, and particularly relates to an exhaust gas turbocharger pressure shell with a bypass flow path. The exhaust gas turbocharger pressure shell comprises an air inlet and an air outlet, which are formed in a pressure shell body, wherein a plurality of air suction holes are formed in the inner edge of the air inlet, an air supplementing groove is arranged on the hole of the inner end of an inner hole of the air inlet, the inner wall of the outer end of the inner hole of the air inlet is set to be an arc curve surface, one end of each air suction hole penetrates through the arc curve surface to form an air return hole, the other end of each air suction hole is communicated with the air supplementing groove, and the air suction holes, the air return holes and the air supplementing groove form the bypass flow path. The exhaust gas turbocharger pressure shell has advantages that airflow can be circulated in the bypass flow path under the working condition of small flow rate so as to prevent surge, and air can also be sucked from the flow path under the work condition of large flow rate, so that the blockage is postponed; the air inlet smoothness is greatly improved, the squeaking is lowered, and an effect of a silencing housing is realized; the working reliability of the supercharger is improved; the assembling precision, the working efficiency, the corrosion resistance and water and pollution resistance of the turbocharger can be improved.

The invention relates to a squeak prevention program control device for a loudspeaking system. The device comprises a microphone signal input interface, a bias amplifier circuit, an analog to digital converter, a program control module, a digital to analog converter and an audio signal output module. According to the program control module, a loudspeaker feedback signal received by a microphone is enabled to be an inverted signal through programming, a customized weak signal is dynamically removed according to a squeak analysis result, the received signal is dynamically changed to a delay value of a loudspeaker, finally, squeak is avoided, and a certain denoising effect is realized.

The invention discloses a car transmission shaft assembly. The car transmission shaft assembly comprises a hollow shaft tube (5). The inner wall of the shaft tube is uneven. The front end of the shaft tube (5) is connected with a universal joint (1) through a front U-shaped fork (4). The rear end of the shaft tube (5) is connected with a rear axle main reduction end face flange (3) through a rear U-shaped fork (6). Rolled paper (7) is placed along the inner wall surface of the shaft tube (5) in a flat attaching mode. Due to the fact that the rolled paper is placed along the inner wall surface of the shaft tube in the flat attaching mode, when a car runs at high speed, high-speed airflow rapidly enters the shaft tube which rotates at high speed through the side face of the front U-shaped fork from a gap of the welding position, intense friction and impact are not generated between the airflow and the uneven inner wall of the shaft tube any more due to blocking and absorption of the rolled paper in the shaft tube, purr whine noise generated by the high-speed airflow can be greatly lowered, noise is low and can not interfere in listening of a driver to other sounds, and therefore the operation of the driver for normally driving the car can not be affected, and normal running of the car is guaranteed.

The invention relates to a device for letting live pigs out of a pigsty in a large-scale pig farm. The device comprises a pigsty out-letting house, a weighbridge and a boarding ramp. The device is characterized in that the weighbridge is installed on the terrace of the pigsty out-letting house, two doors and fences which form an enclosure are arranged around the pigsty out-letting house, the distance between the bottom edge of the internal side of each fence and the edge of the weighbridge is no more than 4cm, one door is a weighbridge entry door and is communicated with the pigsty out-letting house and a pigsty, the other door is a weighbridge exit door and is communicated with the pigsty out-letting house and the boarding ramp, the boarding ramp rises gradually, the inclination of the boarding ramp is less than or equal to 30 degrees, the highest position of the boarding ramp and the bottom of a rear carriage of a live pig transport vehicle are at the same level, the boarding ramp consists of a ramp groove and a support and the height of the support is adjustable. The live pigs can be tempted by foods and the like to actively get out of the pigsty, the howls of the live pigs when the live pigs get out of the pigsty are reduced, the stress response of the live pigs which get out of the pigsty and the live pigs which stay in the pigsty is minimized, the disease infection which is possibly caused when the transport vehicle gets in and out of the pig farm is positively prevented and the cost of letting the live pigs out of the pigsty is obviously reduced.

The invention provides check valve and central lampblack purifying equipment, and relates to the technical field of purifying equipment. The check valve comprises a valve body; a first valve plate anda second valve plate are axially arranged in the valve body side by side, and are both matched with the section of the valve body; the valve body is provided with a first driving device and a seconddriving device; the first driving device is used for driving the first valve plate to rotate; and the second driving device is used for driving the second valve plate to rotate. The central lampblackpurifying equipment comprises a range hood and the check valve; and the check valve communicates between an exhaust port of the range hood and an exhaust port of a public flue. Through arrangement ofthe first valve plate and the second valve plate, when one of the first valve plate and the second valve plate is better in tightness, the valve plates can be prevented from generating the howlround phenomenon; and when the first valve plate and the second valve plate are both weaker in tightness, a separation layer therebetween can reduce the pressure difference between the air pressure of a kitchen and the air pressure of the public flue, so that the howlround strength is weakened.

The invention relates to a pantograph guide device of a railway vehicle, which comprises an air guide sleeve fixed on the vehicle roof. The air guide sleeve consists of a lateral air guide sleeve, a front air guide sleeve and a rear air guide sleeve; the surroundings of the pantograph are annularly arranged. The lengthwise section of the lateral air guide sleeve is roughly a trapezoid with a narrow top and a wide bottom; the middle lower part of the side of the lateral air guide sleeve which is corresponding to the pantograph is provided with a chamfer angle used for widening the width of thebottom of the air guide sleeve; the lengthwise sections of the front air guide sleeve and the rear air guide sleeve are roughly triangular; the lateral air guide sleeve is a box structure, which is internally and transversely provided with a plurality of first stiffener plates and second stiffener plates; the front air guide sleeve and the rear air guide sleeve are thin-shell structure, which areinternally provided with a plurality of stiffener plates. When the railway vehicle runs at high speed, the air guide sleeve can prevent the influence of air stream to the pantograph, thus reducing thenoise source of the pantograph and effectively reducing noise of the pantograph. The air guide sleeve can be fixed on the vehicle roof alone, thus being free from the influence of the structural formof the pantograph, and suitable for the pantograph of any structural form.

The invention discloses a howling suppression method, a related model training method and device, and a storage medium. The method comprises the following steps: acquiring a target audio signal; detecting the target audio signal by using the acoustic feedback model, and determining the maximum stable gain of the target audio signal, wherein the audio signal obtained by performing gain processing on the target audio signal by using the maximum stable gain can meet a preset howling suppression requirement; obtaining a target gain according to the maximum stable gain, wherein the target gain is not larger than the maximum stable gain; and performing gain processing on the target audio signal by using the target gain to obtain an output audio signal. According to the scheme, generation of howling can be reduced.

The invention discloses a vehicle rear independent main deceleration assembly. The vehicle rear independent main deceleration assembly comprises a connecting flange, a main decelerator shell, a driving tooth, a driven tooth, a differential machine assembly, and differential semi-shafts. The connecting flange is fixed to the driving tooth. The driven tooth is engaged with and fixed to the driving tooth. The differential machine assembly comprises a differential machine shell, two semi-shaft gears, and four planetary gears. The planetary gears are perpendicular to the two semi-shaft gears. Eachplanetary gear is engaged with and connected to one lateral faces of the two semi-shaft gears separately. The planetary gears are rotatably arranged in the differential machine shell. The other lateral ends of the semi-shaft gears are separately fixedly connected with the corresponding differential semi-shafts in a detachable mode. The differential semi-shafts are separately detachably fixed to corresponding tires. The driven tooth is detachably fixed to the outer edge of the differential machine shell. According to the vehicle rear independent main deceleration assembly, the structure is simple, noise during vehicle driving can be effectively reduced, the service life of the planetary gears can be effectively prolonged, torque transmission is stable, resonance is avoided, and NVH performance and riding comfort of the whole vehicle are effectively improved.

The present disclosure relates to a method of manufacturing a transmission clutch assembly configured to reduce squawk during engagement, the method including: forming a clutch component; and coupling a plurality of mass dampers to the clutch component to split a mode of vibration for the clutch component during engagement.

The invention provides a check valve and central fume purification equipment, and relates to the technical field of purification equipment. The check valve comprises a valve body and a valve sheet; the valve body is provided with a drive device and a connecting arm which are fixedly connected, the valve sheet is hinged to the free end of the connecting arm, the drive device drives the connecting arm and the valve sheet to move in the axial direction of the valve body, a drive part is arranged in the valve body, the drive part moves in the axial direction of the valve body along with the valvebody to drive the valve sheet to achieve angular rotation, the blockage state of the valve sheet to the valve body is changed, and the central fume purification equipment comprises a kitchen ventilator and the check valve; the check valve communicates between an exhaust opening of the kitchen ventilator and an air outlet of a public flue. The valve sheet achieves the angular rotation under drive of the connecting arm and drive of the drive part, the blockage control over the valve body is achieved, the valve sheet is good in blockage seal on the valve body, and fume reinjection and squealing of fume can be reduced.

The invention relates to a bone conduction hearing aid device, comprising an in-vitro voice processor which comprises a shell, a metal disk, an electromagnetic vibrator placed in the shell, a microphone and a circuit board, wherein a digital signal processor DSP is integrated and mounted on the circuit board. A vibrator packaging and separating cabin is arranged in the shell. A port is arranged on the right side wall of the shell. The port is communicated with the vibrator packaging and separating cabin. An output end part of the electromagnetic vibrator stretches out of the port and is connected with the metal disk. At least one microphone is arranged on the wall of the shell. The electromagnetic vibrator is arranged in the vibrator packaging and separating cabin. The port is communicated with the vibrator packaging and separating cabin. The output end part of the electromagnetic vibrator stretches out of the port and is connected with the center of the metal disk. According to the device, the electromagnetic vibrator is placed in the vibrator packaging and separating cabin. The sound propagated from the electromagnetic vibrator to the microphone is reduced and attenuated, so the sound propagated form the electromagnetic vibrator to the microphone is reduced or attenuated, and the howling of the bone conduction hearing aid device is greatly weakened.

The invention relates to the technical field of commercial kitchen ware and in particular discloses an ejector matched with a high-depth combustion chamber and a combustor of an ignition structure, wherein an air ejection hose is arranged at the bottom of a distributor, an air flow ejected by the air ejection hose can dredge gas in the combustion chamber to flow out of the combustion chamber to reduce the probability of occurrence that the gas vibrates to induce squeal, and air ejected by the air ejection hose supplements air secondarily for combustion reaction of primary fire and mixed gas, so that the air flow of the fixed gas in the main fire can be reduced. A kindling material fire ejecting port is arranged in the inner side surface of an oil-water sundry reserving basin, so that the main fire and the mixed gas can be ignited quickly and stably to reduce the ignition time delay and avoid detonation generated by accumulation of the mixed gas. The ejector has independent tissue air and gas supplying and mixing and combusting functions and an independent kindling material mixed gas distribution chamber. An ignition needle function is not affected by a combustion flame in the distributor fully, so that the ejector has fully independent self-combustion and self-regulation function.

The invention provides a display module and a display device. The display module comprises a backlight module and a touch module which are arranged in a stacked mode, the backlight module comprises ametal frame, the touch module comprises a modulation signal line, and the modulation signal line is connected with a ground wire pin of the metal frame. According to the display module provided by theembodiment of the invention, the metal frame of the backlight module is connected with the modulation signal line of the touch module, so that in the working process of the touch module and when themodulation signal is output, the signals of the building port and the touch signal are the same, the voltage difference between the metal frame and the touch module is reduced, and the produced inverse piezoelectric effect is reduced; therefore, the possibility of a howling phenomenon is reduced.

The invention provides an air outlet device of an automobile air conditioner. The air outlet device comprises a shell, an air door body, an air door adjusting mechanism, an air volume detection deviceand an LED lamp arranged at an air outlet, the shell is provided with a through air duct, an air inlet is formed in the front end of the air duct, and an air outlet is formed in the rear end of the air duct; the air door body is connected with the shell in a pivoted mode at the position of the air inlet and can match the inner wall of the shell to close the air inlet; the air door adjusting mechanism is in power connection with the air door body and used for adjusting the opening degree of the air inlet; the air volume detection device is arranged at the air inlet and used for detecting the air volume inside the air inlet; and the LED lamp is electrically connected with the air volume detection device, and the color change of the LED lamp is controlled according to the air volume detectedby the air volume detection device. The air outlet device of the automobile air conditioner can feed back air volume information to a user in real time, the user can adjust the air volume of the airoutlet conveniently at night, and user experience is improved.

The invention discloses a large plate shearing machine hydraulic system which comprises a hydraulic pump, a combined cartridge valve, a two-position four-way reversing valve, a pressing oil cylinder,a first three-position four-way reversing valve, a second three-position four-way reversing valve, a first hydraulic control one-way valve, a first one-way valve, a two-way hydraulic lock, a main oilcylinder, an auxiliary oil cylinder, a one-way sequence valve, a combined valve, a first one-way throttle valve and a second one-way throttle valve; the rapid descending shearing action of an upper knife rest is realized; the rapid ascending returning action of the upper knife rest is realized, and the descending speed of the upper knife rest and the stability of the hydraulic system are ensured;the upper knife rest can be locked at any position, the structure is reliable in locking and free of leakage, and the position of the upper knife rest can be locked for a long time; and the shearing angle adjusting action speed is controlled by adjusting knobs of the first one-way throttle valve and the second one-way throttle valve.

A clutch gear (40) is formed, and several mass dampers (30) are coupled to the clutch gear to split the mode of vibration for the clutch gear during engagement. A lubrication dam is formed between the clutch gear and the mass damper. A receptor is formed in the clutch gear to partially fit the mass damper. An independent claim is included for vehicle transmission clutch assembly.

A shadow mask support frame for a color CRT is disclosed, in which a coupling portion between a main frame and a sub frame, and a shape of the sub frame are improved to increase the frequency of unique oscillation, thereby reducing a howling phenomenon occurring in a shadow mask. The shadow mask support frame for a color CRT includes: two main frames having hollow sections; two sub frames having solid sections, end portions respectively fixed into respective end portions of the main frames, a support portion inwardly extended with a predetermined length at an obtuse angle to the end portions, and a central portion inwardly extended with a predetermined length at an obtuse angle to the support portion; and a bracket mounted between respective end portions of the main frames and the sub frames, for reinforcing fixing portions of the main frames and the sub frames.

The invention provides a compact structure of a liquid reservoir and a gas-liquid separator for a refrigeration / air-conditioning system. The structure comprises an inner shell, an outer shell, an air inlet pipe, an air outlet pipe, a liquid supply inlet pipe, a liquid supply outlet pipe and a connection component, wherein the inner shell is fixed in the outer shell through the connection component; a cavity in the outer shell is divided into a liquid storage cavity and a gas-liquid separating cavity; the outer ends of the air inlet pipe and the air output pipe stretch out of the outer shell; the inner ends of the air inlet pipe and the air output pipe stretch into the gas-liquid separating cavity; the air outlet pipe is a U-shaped pipe; the inner port is an inclined port and an oil returnhole and a balanced hole are formed in the inner port; the air inlet pipe is an L-shaped pipe; the inner port of the air inlet pipe and the inner port of the air outlet pipe are arranged in a staggering manner; the outer ends of the liquid supply inlet pipe and the liquid supply outlet pipe stretch out of the outer shell; the inner ends of the liquid supply inlet pipe and the liquid supply outletpipe stretch into the liquid storage cavity; the inner port of the liquid supply inlet pipe is arranged above the inner shell; the liquid supply outlet pipe is an L-shaped pipe; the inner port of theliquid supply output pipe is an inclined port; and the connection component is cylindrical. The compact structure has the advantages of increasing the comprehensive efficiency, utilizing the inner volume in multiple aspects, reducing the system mounting space, reducing the cost of parts and the like.

The present application provides a feedback filter design method, a design device and an earphone, to obtain the transfer function of the secondary channel of the earphone in at least one working state; based on the transfer function of the secondary channel, determine the A nominal system transfer function and a first weighting function of the earphone; a second weighting function is determined based on the noise reduction expectation of the earphone; a second weighting function is determined based on the first weighting function, the second weighting function, and the nominal system transfer function that determines the parameters of the feedback filter. Compared with the design method of the feedback filter in the prior art, the present application determines the parameters of the feedback filter through the transfer function of the secondary channel under various working conditions, so that the earphone remains stable under various working conditions, reducing The appearance of howling enhances the robustness while keeping the noise low.

The invention discloses a base strip which comprises a first vertical part, an arc-shaped part, a second vertical part, a first transverse part and a third vertical part which are sequentially connected into a whole. One end of the second vertical part is connected with the first vertical part through the arc-shaped part, the other end of the second vertical part is connected with the second vertical part through the first transverse part, the first vertical part, the arc-shaped part and the second vertical part form a first notch, an opening of the first notch is downward, the second vertical part, the first transverse part and the third vertical part form a second notch, and an opening of the second notch is upward; and the first transverse part is provided with an extending part, and the third vertical part is arranged between the first transverse part and the extending part. By means of the extending parts, when the multiple base strips are spirally wound and transversely connected to form an extrusion hose, first grooves in the inner wall of the hose can be blocked, and therefore it is guaranteed that the inner wall of the extrusion hose is smooth, and howling is reduced.

The assembly (450) has a clutch component e.g. clutch gear (470), rotated with respect to a transmission shaft e.g. output shaft (480). A set of multi-directional mass dampers (460) i.e. sprung mass dampers, is coupled to the clutch component with inner diameter, and alters a mode of vibration for the clutch component during clutch engagement, where the mass dampers are separated by ninety degrees on the clutch component. The mass dampers applies localized force to the clutch component with arc degree less than or equal to five degrees. An independent claim is also included for a method for manufacturing a transmission clutch assembly with reduced squawk during engagement.

The invention discloses a horn and a megaphone, and relates to the technical field of sound amplification equipment, and the megaphone comprises a horn, a megaphone body, a microphone and a loudspeaker. The horn is of a direct injection type integrated structure. The horn comprises a connecting section and a sound outlet section, and a mounting section is arranged in the connecting section, so that the loudspeaker is convenient to mount; the connecting section of the horn is connected with one end of the megaphone body, and the sound outlet section of the horn is used as the sound outlet end of the megaphone; and the other end of the megaphone body is connected with the microphone. The horn and the megaphone have the advantages of being small in size and convenient to use, long-distance transmission of sound can be achieved, sound transmission has directivity, and the transmission effect is good.

The invention discloses an asymmetrical high-frequency sound wave controller with an angle adjustable. The asymmetrical high-frequency sound wave controller with the angle adjustable comprises a conic core a, a conic core b, a shell a, two baffles x and two baffles y. The conic core a is a cone with a concave-convex surface and the conic core b is an irregular circular truncated cone which is obtained in the mode that the circular truncated cone is symmetrically cut along the diameter of the end face of the larger end in an inclined mode. The irregular circular truncated cone is composed of a semicircular truncated cone x with a concave surface and a semicircular truncated cone y with a convex surface. The semicircular truncated cone x is cut in an inclined mode so that two symmetrical 1 / 4-oval surfaces x can be obtained and the semicircular truncated cone y is cut in an inclined mode so that two symmetric 1 / 4-oval surfaces y can be obtained. The shell a is arranged on the conic core a in a sleeved mode, the small diameter end and the large diameter end of the shell a correspond to the conic node position and the conic bottom position of the conic core a respectively. A high-pitch inlet of the asymmetrical high-frequency sound wave controller is a circular plane, high pitch passes through a gap between the conic core a and the shell a and then is emitted and makes contact with natural space, and the baffles only guide the high pitch in part of the natural space, so that an outlet becomes a C-shaped stereoscopic face facing upwards, forwards and downwards, and therefore the work efficiency of a voice box is high.