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76results about How to "Cancel sound" patented technology
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Smart voice processing method
ActiveCN103811020AVoice CancellationCancel soundSpeech recognitionPersonalizationInformation processing
The invention relates to a smart voice processing method and belongs to the technical field of information processing. The smart voice processing method is characterized by achieving smart identification of identities of multiple talkers in the multi-person voice environment and separating mixed voices by building a talker voice model base so as to obtain independent voice of each talker, amplifying voices of the talkers to be heard according to user demands and eliminating voices of talkers not required by the users. Different from the traditional hearing aid, the smart voice processing method can be used for automatically providing needed voices for the users according to user demands, reduces interference of non-target voices except for noise, and has individuation, interaction and intelligentization.
Owner:NORTHEASTERN UNIV
Drum leather used for original sound drum and electronic drum
InactiveCN101807392AImprove pronunciation accuracyCancel soundElectrophonic musical instrumentsPercussion musical instrumentsPolyesterSurface layer
The invention relates to drum leather used for an original sound drum and an electronic drum. The drum leather is formed by superposing a surface layer, a middle layer and a bottom layer together, wherein the surface layer used as a striking face adopts one of a dacron silk screen, a nylon silk screen, a chinlon silk screen and a polyester silk screen; the middle layer with the functions of sound suppression and vibration damping adopts a dacron glue-spraying screen fabric; and the bottom layer used as a supporting layer adopts one of the dacron silk screen, the nylon silk screen, the chinlon silk screen and the polyester silk screen. The drum leather used for the original sound drum and the electronic drum is formed by superposing the three layers of silk screens together. When the drum leather is used on the original sound drum, the middle layer made from a soft material can eliminate sound generated when a drumstick is struck on the surface layer, so that the original sound drum can not disturb residents and is suitable for a drummer to use during practice; and when the drum leather is used on the electronic drum, the middle layer can quickly and effectively attenuate vibration generated when the drumstick is struck on the surface layer, so that the sounding accuracy of the electronic drum can be enhanced, and supporting facilities can also be simplified, thereby lowering the production cost.
Owner:王琳
Electronic device and method for blocking echo generation by eliminating sound output from speaker
InactiveUS20140064506A1Avoid it happening againCancel soundLoudspeakersDevices with sensorEngineeringLoudspeaker
A method for operating an electronic device including a first microphone and a second microphone to block the echo generation the electronic device is operated in a loudspeaker mode. The method includes: determining whether a sensor located within a predetermined range from the second microphone has sensed a peripheral object; blocking an operation of the second microphone when the sensor has sensed a peripheral object; and blocking echo generation by eliminating a sound that is output from a speaker and input to the first microphone.
Owner:SAMSUNG ELECTRONICS CO LTD
Ergonomic anechoic anti-noise canceling chamber for use with a communication device and related methods
ActiveUS9525765B2Reduce the amount requiredReduce sound energyMicrophonesHearing device active noise cancellationNoise controlSound sources
Disclosed, in general, are devices that provide a substantially active noise canceling area over a sound source by causing disruptive interference to all frequency fields of speech sounds from the sound source. In some embodiments, active noise control or active noise cancellation means (“ANC means”) are provided to the device. Said means include one or more active noise canceling speakers for the addition of sound specifically designed to cancel noise from the speech sound source without interfering with the sound source going to the microphone, so the listener can clearly hear what the user is saying.
Owner:QUIET
Noise reduction method and handheld mobile terminal
InactiveCN104036782AGood noise canceling effectSound Signal CancellationSpeech analysisSubstation equipmentComputer terminalNoise reduction
The invention discloses a noise reduction method and a handheld mobile terminal. The method is applied to a first handheld mobile terminal. An answering module is arranged in the first handheld mobile terminal. A first audio playing unit is arranged in the answering module, and the first audio playing unit is used for playing a first voice signal sent by a second handheld mobile terminal when the first handheld mobile terminal communicates with the second handheld mobile terminal. At least one second audio playing unit is arranged on the answering module. The method comprises the following steps: collecting a first related parameter of the first voice signal; generating a second voice signal provided with a second related parameter based on the first related parameter, wherein the second related parameter of the second voice signal is matched with the first related parameter; and outputting the second voice signal through the at least one second audio playing unit to reduce noise of the first voice signal.
Owner:LENOVO (BEIJING) LTD
Audio apparatus and method for use in proximity to a magnetic resonance imaging system
ActiveUS8085942B2Cancel soundMagnetic measurementsDiagnostic recording/measuringAuditory stimuliPatient communication
An apparatus and method for presenting high-quality auditory stimuli, receiving patient communication and providing noise cancellation within the environment of magnetic resonance imaging (“MRI”) equipment. A microphone is positioned in a noise attenuated channel for recording of the patient's voice. A microphone is disposed outside of a noise attenuated channel to directly record the sounds of MRI equipment during its operation. The signals generated by the microphones are employed to reduce the output of noise generated by MRI equipment.
Owner:NORDICNEUROLAB
Slide block mechanism for semi-automatic pistols
ActiveUS20190086169A1Eliminating soundAvoid reciprocatingBreech mechanismsPistolsEngineeringReciprocating motion
A slide block mechanism for a semi-automatic pistol that locks the slide in battery and prevents the slide from reciprocating when the pistol is discharged. The slide block mechanism consists of a pair of aligned notches formed in the bottom edge of the slide and the top of the frame, and a pivoting slide block lever mounted to the frame that selectively seats within either of the aligned notches. The slide block lever can be manually switched to engage and disengage the slide block mechanism and is independent of the fire control and slide stop assemblies. The slide block lever has a protrusion that seats within the slide notch when engaged to prevent the slide from moving rearward and seats within the frame notch when disengaged for allowing normal operation of the slide.
Owner:NEVADA CARTRIDGE CO LLC
Anti-noise canceling headset and related methods
ActiveUS9614945B1Hinder intonationHinder pronunciationMicrophonesInterconnection arrangementsEngineeringHeadphones
Disclosed is a telephone headset that features an antiphase / anti-noise speaker within an anechoic chamber so that noises provided therein can be combated with antiphase noises. In some embodiment, the antiphase / anti-noise speaker can be an exciter. In some embodiments, the headset is designed to include passive and active noise cancellation of a use's voice. Suitably, the headset can be adjusted to fit an inclusive range of head dimensions comfortably, the headsets may connect wirelessly to the user's phone to ensure cable free operation and communication.
Owner:QUIET
Intelligent building ventilation system based on Internet of things
InactiveCN107461868AAvoid energy consumptionAvoid equipment wear and tear issuesSpace heating and ventilation safety systemsLighting and heating apparatusAutomatic controlAir filter
The invention discloses a building intelligent ventilation system based on the Internet of Things, which includes a ventilation control system and a ventilation pipeline system. The ventilation control system includes a monitoring unit, a main control unit, a power supply unit, an execution unit, a wireless communication unit and a network monitoring center. In view of the problems that the current building ventilation system cannot be automatically ventilated, the noise generated by ventilation and the good air quality are guaranteed, the automatic control system controls the ventilation and temperature adjustment, the setting of the noise elimination device and the setting of the air filter device to realize intelligent adjustment of the indoor environment of the building and Ability to remotely monitor the ventilation system.
Owner:成都尊华荣域科技有限公司
Method and apparatus for determining a target sound scene at a target position
ActiveCN107197407AReduce computational complexityCancel soundSingle subwooferPseudo-stereo systemsLoudspeakerComputer science
A method, a computer readable storage medium, and an apparatus (20, 30) for determining a target sound scene at a target position from two or more source sound scenes. A positioning unit (23) positions (11) spatial domain representations of the two or more source sound scenes in a virtual scene. These representations are represented by virtual loudspeaker positions. A projecting unit (24) then obtains (12) projected virtual loudspeaker positions of a spatial domain representation of the target sound scene by projecting the virtual loudspeaker positions of the two or more source sound scenes on a circle or a sphere around the target position.
Owner:INTERDIGITAL CE PATENT HLDG
Slide block mechanism for semi-automatic pistols
ActiveUS10378838B2Cancel soundAvoid reciprocating motionBreech mechanismsPistolsReciprocating motionFire control
A slide block mechanism for a semi-automatic pistol that locks the slide in battery and prevents the slide from reciprocating when the pistol is discharged. The slide block mechanism consists of a pair of aligned notches formed in the bottom edge of the slide and the top of the frame, and a pivoting slide block lever mounted to the frame that selectively seats within either of the aligned notches. The slide block lever can be manually switched to engage and disengage the slide block mechanism and is independent of the fire control and slide stop assemblies. The slide block lever has a protrusion that seats within the slide notch when engaged to prevent the slide from moving rearward and seats within the frame notch when disengaged for allowing normal operation of the slide.
Owner:NEVADA CARTRIDGE CO LLC
Effective toilet-cleaning foam aerosol and preparation method thereof
ActiveCN109666545ATime stableEasy to rinseNon-ionic surface-active compoundsAnionic surface-active compoundsWater savingFoaming agent
The invention belongs to the technical field of preparation products for daily appliances, and particularly relates to an effective toilet-cleaning foam aerosol and a preparation method thereof. The foam aerosol comprises, by weight, 8-18% of a propellant, 5-10% of a foaming agent, 2-8% of a deodorizing agent, 0.1-0.6% of a thickener, 0.3-0.6% of natural bio-antimicrobial agents, 0.2-0.4% of preservatives, 0.2-0.4% of essences, and 62-84.2% of deionized water. The effective toilet-cleaning foam aerosol has the advantages of effectively removing and isolating foul smell, having fine and rich foams, keeping stable for a long time, resisting to water splashing, cleaning toilets with toilet paper saved, being environmental friendly and water saving and the like.
Owner:ZHONGSHAN TIANTU FINE CHEM CO LTD
Filter tip drum stick
InactiveUS20090084247A1Improve dynamic rangeSmall diameterPercussion musical instrumentsEngineeringPolycarbonate
A stick type drum stick is disclosed which includes drum stick design featuring a hole drilled longitudinally in the playing striking end. The primary purpose is to accommodate a rod. The rod is inserted and glued into the hole of the tip. The rod can be cut to a desired length to suit its flex and resilient nature. Suitable material for the rod include nylon or delrin, PVC, ABS, polypropylene or polycarbonate. The result of combining these materials in this format produces a filter tip drum stick.
Owner:RUNDLE DAVID CHAPPELL
Sound deadening shock absorption rail joints of coak joint staggered joints
The invention provides a noise-elimination damping rail joint with staggered gaps connected by tenon, which is characterized in that the rail joints of the invention are connected by tenons which have different shapes and are coincident to each other; therefore, transverse broken gap of the rail joint is staggered, and the joints of two rails are mutually coincident alternatively; the wheel can pass through the joint without gap and generates no strike vibration and noise between the wheel and the rail joint gap, thus improving the comfortableness of the passenger and eliminating the harmful effect of the vibration and noise on the environment when the train passes; the rail joint with staggered gaps connected by tenon is safer, more reasonable and more stable compared with the existing butted rail joint, creates beneficial conditions for the speed-increasing of the train and is a technical breakthrough in the rail history.
Owner:易美春
Ceiling type indoor air purifier
InactiveCN111530191AReduce vibrationCancel soundDispersed particle filtrationTransportation and packagingHEPARoom air cleaners
The invention discloses a ceiling type indoor air purifier. The air purifier structurally comprises an LED lamp, an air outlet, a display screen, a telescopic rod, a connecting plate, a noise reduction device, a sweeping device, a primary filter screen, an HEPA efficient filter screen, an activated carbon filter screen and a machine body. According to the invention, when purification is carried out after improvement, vibration generated by air purification is reduced through cooperation of the protection damping blocks and the damping springs, most of generated noise is efficiently blocked through the silencing net plate and the sound insulation net plate auxiliary silencing cover, sound generated by operation of the air purifier is eliminated, and the use effect of the air purifier is improved; after air is purified, the brush is driven by the sliding block to rotate, dust particles on the filter screen are swept, then the dust suction piece is used in cooperation with blades for dustsuction treatment, swept dust is sucked into a dust collection cavity through a connector, dust in the air purifier is removed, and the practicability of the air purifier is improved.
Owner:刘丽敏
Method for eliminating motor sound
InactiveCN101166232ACancel soundTelevision system detailsColor television detailsWave shapeVideo recording
Being in use for a device of picking up digital image, the method eliminates sound of motor rotation when video recording carries through. The method includes following steps: inputting analog control signal; simulating working order of motor, and marking down analog sound waveform (ASW) of motor; establishing data bank of ASW; when video recording carries through, the device of picking up digital image uses ASW to eliminate sound of motor in dynamic film.
Owner:ALTEK CORP
Chain Tensioner
In a tensioner (100)having a ratchet mechanism composed of annular teeth (122) on a plunger (120) and an expansible resilient ring (130)disposed in a groove (116)formed in the inner peripheral surface of a plunger-accommodating hole (111)in a tensioner housing, the rear surfaces of the annular teeth have a steep slope (122b), and the front surfaces of the annular teeth (122)have a gradual slope with a convex curvature such that the rate of change of the slope decreases proceeding in the direction of retraction of the plunger (120).
Owner:TSUBAKIMOTO CHAIN CO
Anechoic cup or secondary anechoic chamber comprising metallic flake mixed with sound attenuating or absorbing materials for use with a communication device and related methods
ActiveUS20170149943A1Improve privacyImprove clarityMicrophonesLoudspeakersEngineeringAnechoic chamber
Disclosed is a telephone headset that features an antiphase / anti-noise speaker within an anechoic chamber so that noises provided therein can be combatted with antiphase noises. In some embodiment, the antiphase / anti-noise speaker can be an exciter. In some embodiments, the headset is designed to include passive and active noise cancelation of a use's voice. Suitably, the headset can be adjusted to fit an inclusive range of head dimensions comfortably, the headsets may connect wirelessly to the user's phone to ensure cable free operation and communication.
Owner:QUIET
Sound signal detection feedback device and realization method thereof
InactiveCN107134282ACancel soundReal-time voice communicationSpeech analysisAlarmsElectricityFrequency spectrum
The invention discloses a sound signal detection feedback device, which comprises a processing module, a sound collecting module, an operation module, a display module, a playback module and a network card, wherein the processing module is respectively electrically connected with the playback module, the sound collecting module, the network card, the operation module and the display module. The invention also provides a realization method for the sound signal detection feedback device. Apart from detecting a specified sample sound the sound size, sounds with a specified amplitude, a specified frequency and specified spectrum features can also be detected; the traditional cable is used as a transmission medium, no special line needs to be laid, a server uses a common software program, mounting to the existing computer and configuration are only needed, and no special server device needs to be purchased independently; real-time sound communication is realized, a device end is internally provided with an echo cancellation algorithm for cancelling sounds played by a horn and recorded by a local device microphone; and the device is provided with a key, and a user is supported to manually trigger alarming signals to send a sound communication request with the server.
Owner:SHANDONG GETTOP ACOUSTIC
Contraction folding ladder
The invention discloses a contraction folding ladder, which comprises a fixed frame, a connecting frame and a movable frame, wherein the fixed frame is fixedly arranged on a fixed object and comprises two fixing rods in parallel arrangement; the connecting frame is movably connected with the fixed frame; the movable frame comprises support rods and telescopic rods connected with the support rods through telescopic elements; the support rods and the fixing rods are in one-to-one corresponding arrangement and are movably connected; the telescopic rods are movably connected with the connecting frame through a chain via a pedal; when the contraction folding ladder is in an unfolded state, the end parts of the support rods are flushed with the end parts of the fixing rods, or are higher than the end parts of the fixing rods. The contraction folding ladder has the advantages that the fixed frame is fixedly arranged on a bed frame of a student dormitory; the rest influencing sound given when people get on or get off from a bed and the swinging generated in the process can be eliminated; a certain degree of potential safety hazards is greatly reduced; the ladder can be contracted and folded; the occupied space is reduced; the placement is convenient.
Owner:GUANGXI UNIV
Electrically heated wooden floor
InactiveCN108894459AAdjust the temperature freelyComfortable temperatureLighting and heating apparatusElectric heating systemFiberCarbon fibers
An electrically heated wooden floor, include a floor body, the two ends of the floor main body are respectively provided with matching tongue and tongue groove, a heating layer is arranged inside thefloor body, The heating layer is provided with a hollow groove, a plurality of vertical isolation ribs are arranged in the hollow groove, reinforcing ribs are arranged crosswise between adjacent isolation ribs, a threading pipe is arranged at the crosswise part of the reinforcing ribs, a carbon fiber heating wire is arranged in the threading pipe, the carbon fiber heating wire is centrally connected with an external temperature controller through a cold lead, and a power supply wire is connected on the temperature controller. The invention has the characteristics of good heating effect, convenient installation, maintenance and good comfort.
Owner:湖州春阁家居科技有限公司
Iron scrap collecting device for semicircle bearing bush finely boring machine
InactiveCN102380796ASave spaceGreat suctionMaintainance and safety accessoriesWorking environmentEngineering
The semicircle bearing bush finely boring machine inevitably generates lots of iron scrap in an operating process. The conventional equipment without a collecting device exerts bad influences on the cleanness and tidiness of working places, and the iron scrap falling onto the ground cannot be collected conveniently. The invention aims to provide an iron scrap collecting device for a semicircle bearing bush finely boring machine, which can collect iron scrap generated during the operation of the semicircle bearing bush finely boring machine in a centralized manner and prevent the iron scrap from falling onto the group, thereby avoiding affecting working environments and inconvenience of collecting iron scrap manually.
Owner:JIANGSU FEIYUE BEARINGS
Micro silent touch switch
InactiveCN107195498AIncrease switch movement strokeEliminates the sound of switching operationsElectric switchesTouch switchEngineering
The invention discloses a micro silent touch switch. The micro silent touch switch comprises a hollow shell; a switch cap is arranged at one end of the shell; the switch cap is connected to a middle shaft; the middle shaft is arranged in a switch circuit board in a penetration manner; the middle shaft is also sleeved with a switch contact piece; a first elastic part is arranged between the switch contact piece and the switch cap; the other end part of the middle shaft is connected to a second elastic part, wherein a conductive contact piece corresponding to the switch contact piece is arranged on the switch circuit board; when the switch cap presses downwardly due to stress, the first elastic part pushes the switch contact piece to move downwards to be in contact with the conductive contact piece to turn on the switch, and to compress the second elastic part at the same time; and when external force is removed, the second elastic part recovers elasticity deformation to reset the switch contact piece to disconnect the switch. By virtue of the micro silent touch switch, through matching of two springs and the middle shaft, the switch movement journey is prolonged; and meanwhile, the switch operating sound is eliminated, the switch can be longer in service life, and the self structure of the switch is relatively simple.
Owner:XENO CO SHANGLUO LTD
Variable valve mechanism for motorcycle engine with double overhead camshafts
ActiveCN113550806AImprove performanceHigh structure control precisionValve arrangementsMachines/enginesCamControl theory
The invention provides a variable valve mechanism for a motorcycle engine with double overhead camshafts. The variable valve mechanism comprises a cylinder head, an exhaust camshaft, an exhaust rocker arm, an intake camshaft, a low-speed intake cam, a high-speed intake cam, an intake rocker arm and an electromagnet, wherein the exhaust camshaft and the intake camshaft are arranged in the cylinder head in parallel, the high-speed intake cam is arranged between the low-speed intake cam and a cam shaft front gland, a friction spring is arranged between the high-speed intake cam and the cam shaft front gland, an axial key groove C is formed in the tail end of the intake camshaft, a movable middle push rod is arranged in the key groove C, and the head end of the middle push rod abuts against a synchronous plug pin. The variable valve mechanism is suitable for a motorcycle engine with the double overhead camshafts, the valve timing can be changed when the engine is in the high-speed working condition and the low-speed working condition so that the engine can achieve the optimal performance, the structure control precision is high, the space arrangement is compact, and the sound generated when the synchronous bolt works is effectively eliminated.
Owner:LUOYANG NORTHERN EK CHOR MOTORCYCLE CO LTD
Emergency locking retractor for noise reduction on vehicle sensing assembly
ActiveCN109823303ACancel soundRestoration of locking functionBelt retractorsLocking mechanismSteel ball
The invention relates to an emergency locking retractor for noise reduction on a vehicle sensing assembly. The emergency locking retractor comprises a belt sensing assembly, a noise reduction piece and the vehicle sensing assembly; the belt sensing assembly is provided with a disc outer tooth, the noise reduction piece is arranged on the disc outer tooth, the interaction force exists and the extrusion is generated between the noise reduction piece and the disc outer tooth, and the disc outer tooth performs circular motion under the trigger of a ribbon and provides a movement trend for the noise reduction piece to generate friction force; when the ribbon is unreeled, the noise reduction piece rotates and squeezes a vehicle sensing arm of the vehicle sensing assembly from the front face or side face through a locking mechanism of the noise reduction piece, thereby limiting moving space of a steel ball of the vehicle sensing assembly; when the ribbon is pulled out, the noise reduction piece rotates reversely, and the noise reduction piece breaks away from the vehicle sensing arm of the vehicle sensing assembly. The emergency locking retractor for the noise reduction at the vehicle sensing assembly has the advantages that the steel ball state of the vehicle sensing assembly can be limited, so that after a passenger does not wear or wears a safety belt, the steel ball is in a specified position and cannot move due to vehicle running, thereby eliminating the sound made by the vehicle sensing assembly.
Owner:CHONGQING GUANGDA IND
Monostable electronic gear shift device and vehicle having gear shift device
InactiveCN111828609ASimplify shifting operationLow costGearing controlAutomotive engineeringMechanical engineering
The invention is applicable to the technical field of vehicle gear shift devices, and discloses a monostable electronic gear shift device and a vehicle having the gear shift device. The monostable electronic gear shift device comprises a shift lever component, a shell component, a gear block component and a gear signal sensing component; the shift lever component comprises a shift lever rotatablyconnected to the shell component; the gear block component is arranged inside a shell; the gear block component is provided with a steady-state position and a transient position; the gear signal sensing component is respectively connected to the shift lever component and the shell component; the gear block component comprises a silencing guide structure; and the lower end of the shift lever component abuts against the silencing guide structure. The vehicle has the above monostable electronic gear shift device. According to the monostable electronic gear shift device and the vehicle having thegear shift device provided by the invention, by simplifying the structural arrangement of a shifter, the size of parts can be miniaturized, the number of the parts is reduced, the feasibility of quality control is improved, and the user experience is good.
Owner:GUANGZHOU AUTOMOBILE GROUP CO LTD
Water-storage and sound-reducing PVC laminated board
InactiveCN104527184ALow priceControl absorptionSynthetic resin layered productsWater storageEngineering
The invention provides a water-storage and sound-reducing PVC laminated board. The water-storage and sound-reducing PVC laminated board is provided with a water storage layer, a sound-reducing layer, a waterproof coating layer, a fireproof coating layer, a first PVC laminated board and a second PVC laminated board in sequence from top to bottom. The water-storage and sound-reducing PVC laminated board provided by the invention has the fireproof function, also can be used for storing water for reducing the temperature, has the sound-reducing and moisture-proof functions and can be repeatedly used.
Owner:JIANGSU HAIJIAN
Data processing method and device, equipment and storage medium
PendingCN113470673AQuality improvementCancel soundSpeech analysisSelective content distributionComputer hardwareTelecommunications
The embodiment of the invention provides a data processing method and device, equipment and a storage medium, so as to improve the quality of received voice data. The method comprises the following steps: in a video playing process, acquiring playing audio data of a corresponding video through a playing component, and acquiring first voice data through an audio input unit; and performing echo cancellation processing on the first voice data according to the playing audio data to obtain corresponding second voice data. The voice of the played video in the voice data can be effectively eliminated, and the quality of the voice data is improved.
Owner:ALIBABA GRP HLDG LTD
Drum leather used for original sound drum and electronic drum
InactiveCN101807392BImprove pronunciation accuracyCancel soundElectrophonic musical instrumentsPercussion musical instrumentsPolyesterSurface layer
Owner:王琳
Terminal, audio signal processing method and device thereof, equipment and storage medium
PendingCN111478999ADoes not significantly increase manufacturing difficultyEffect of electroacoustic conversion efficiencyTelephone set constructionsEngineeringSound wave
The invention provides a terminal, an audio signal processing method, an audio signal processing device, audio signal processing equipment and a storage medium, the terminal comprises a terminal bodyand at least two receivers, the terminal body comprises a screen side and a non-screen side, the non-screen side is provided with at least two first sound outlet holes, and the at least two first sound outlet holes are located on different surfaces of the non-screen side; each receiver is provided with a second sound outlet hole. Wherein the at least one second sound outlet hole corresponds to atleast one first sound outlet hole in the first surface of the non-screen side, the at least one second sound outlet hole corresponds to at least one first sound outlet hole in the second surface of the non-screen side, the second surface is different from the first surface, and the phases of the audio signals in the receivers are different. By means of the technical scheme, the receiver can be installed on the non-screen side of the terminal, the screen space of the terminal is not occupied, meanwhile, directivity control over sound wave radiation can be achieved at the first sound outlet holeof the terminal, and the call problem of the full-screen terminal is solved.
Owner:MUSE TALK TECH CO LTD
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