831 results about "Second sound" patented technology

A system may include a storage device, configured to store computer-executable instructions. A system may include an ear-bud configured to be positioned within an ear canal of a user, the ear-bud comprising: a speaker, a microphone; and one or more processors in communication with the storage device, wherein the computer-executable instructions, when executed by the one or more processors, cause the one or more processors to: obtain a user hearing profile, obtain an equal-loudness hearing profile, receive audio data from the microphone, and generate a second audio data based on a first sound-pressure level, a second sound-pressure level, a first frequency; and cause the speaker to emit the second audio data within the ear canal of the user, such that the user perceives the audio data as if the user has normal hearing.

The present invention relates to the technical field of sound energy conversion, and disclosed are a sound production apparatus and an electronic device. The sound production apparatus comprises a magnetic circuit system, a first vibration system, a second vibration system, and a housing; the magnetic circuit system is used for forming a first magnetic gap and a second magnetic gap; the first vibration system comprises a first annular diaphragm and a first voice coil, wherein the first voice coil is arranged corresponding to the first magnetic gap; the second vibration system comprises a second diaphragm and a second voice coil; the housing and the first vibration system define a first sound cavity; a side sound outlet hole communicated with the first sound cavity is formed in a side wall of the housing; the housing and the second vibration system define a second sound cavity; and a front sound outlet hole communicated with the second sound cavity is formed in the housing, such that the sound production apparatus can be adapted to a use scenario in which a front sound outlet tube and a side sound outlet tube are provided. Because both the first vibration system and the second vibration system can produce sound, the total radiation area of the sound production apparatus is increased, and the performance of the sound production apparatus is improved.

The invention provides a flow guide ring structure, a fan assembly, an air conditioner and a noise reduction control method thereof.The flow guide ring structure comprises a flow guide ring, a noise reduction unit is arranged on the periphery of the flow guide ring, the noise reduction unit comprises a first sound absorption assembly, and the first sound absorption assembly comprises a first shell cover, a first partition plate and a first movable plate; the first shell cover covers the peripheral face of the flow guide ring to form a first cavity, the first cavity is divided by the first partition plate into a first sound absorption cavity and a second sound absorption cavity, the first sound absorption cavity and the second sound absorption cavity are different in size, and a plurality of first communicating holes are formed in a first perforated plate section of the first partition plate in a penetrating mode. The first movable plate is movably arranged on the first perforated plate section so as to adjust the number of the shielded first communicating holes. According to the flow guide ring structure, self-adaptive adjustment and noise reduction can be carried out according to the change of the operating parameters, so that noise of different frequencies generated under different operating parameters is effectively reduced, the frequency range of effective noise reduction is widened, the noise reduction effect is improved, and the mute experience comfort of a user is improved.

The invention belongs to the technical field of laser, and discloses a laser beam splitting and combining device based on an acousto-optic deflector pair and application thereof, and the laser beam splitting and combining device comprises a transmitting optical fiber module, a first acousto-optic deflector, a diaphragm, a second acousto-optic deflector and a receiving optical fiber module which are sequentially arranged; the first acousto-optic deflector and the second acousto-optic deflector are arranged in parallel; the transmitting optical fiber module is used for transmitting laser to the first acousto-optic deflector; the first acousto-optic deflector and the second acousto-optic deflector are used for deflecting, splitting or combining laser beams; the diaphragm is used for blocking secondary diffracted light except the primary diffracted light; and the receiving optical fiber module is used for receiving the laser emitted from the second acousto-optic deflector. Therefore, the technical problems that in the prior art, the laser beam splitting function and the laser beam combining function are mutually independent, two kinds of operation cannot be considered in the same device, and real-time regulation and control over the light beam operation mode are lacked are solved.

The invention discloses a formation decoupling sound source localization method and device based on deep learning and a readable medium, and the method comprises the steps: constructing and training a sound source localization model, and obtaining a trained sound source localization model; acquiring a first sound source signal received by a first microphone and a second sound source signal received by a second microphone in the microphone array; calculating generalized cross-correlation frequency domain representation between the first sound source signal and the second sound source signal based on the first sound source signal and the second sound source signal; obtaining a frequency domain feature based on the guide vector between the first microphone and the second microphone and the generalized cross-correlation frequency domain representation; determining an input feature based on the frequency domain feature, and inputting the input feature into a trained sound source localization model to obtain a candidate sound source angle and a confidence coefficient corresponding to the candidate sound source angle; and post-processing the candidate sound source angle to obtain a sound source positioning result. The invention solves the problems that the existing sound source localization method based on deep learning is large in calculated parameter quantity and cannot be applied to embedded equipment and the like.

The electronic device includes: a rear housing; a middle frame, where the middle frame is connected to the rear housing; a display, where the display is connected to the middle frame; and a sound-making system, where the sound-making system includes a housing and a speaker, the speaker is disposed in the housing, a first sound-making module and a second sound-making module are disposed in the speaker, and the housing is provided with a first sound-making hole and a second sound-making hole. The electronic device is provided with a first sound output portion and a second sound output portion, where the first sound output portion is provided closer to the display than the second sound output portion; or the first sound output portion is located inside the display, and the second sound output portion is located outside the display.

An electronic device includes a casing, a first sound-emitting device and a second sound-emitting device. The first sound-emitting device includes a basket, a vibration system and a magnetic circuit system. The vibration system includes a diaphragm and a voice coil. The magnetic circuit system includes a magnetic bowl, a magnetic unit and an auxiliary magnetic. The first sound-emitting device further includes an upper shell and a front cavity. The first sound-emitting device further includes a first elastic damping member. The diaphragm, the magnetic bowl, the basket and the first elastic damping member are sealed and enclosed to form a first rear cavity, and the first sound-emitting device, the second sound-emitting device and the casing are enclosed to form a second rear cavity. The sound-emitting device of the present invention with good vibration damping effect, high frequency response sensitivity and better acoustic performance.

The present application relates to an abnormal signal detection device using a dual acoustic wave sensor. The abnormal signal detection device using a dual acoustic wave sensor comprises: a housing including a first acoustic wave transmission portion and a second acoustic wave transmission portion; a base substrate located inside the housing and including a first surface and a second surface; a first acoustic wave sensor mounted on the first surface and converting an acoustic wave in a first band into a first electrical signal; a second acoustic wave sensor mounted on the second surface and converting an acoustic wave in a second band into a second electrical signal.

A loudspeaker arrangement comprises a first loudspeaker comprising a first sound radiating surface and a first speaker basket, and a second loudspeaker comprising a second sound radiating surface and a second speaker basket. The first loudspeaker and the second loudspeaker are arranged opposite each other in a first direction. A cavity is formed between a front side of the first loudspeaker and a front side of the second loudspeaker. The first loudspeaker basket is directly coupled to the second loudspeaker basket, thereby forming a third projection that defines an opening of the cavity. The third projection forms a first point of contact on a first side of the loudspeaker arrangement. The first loudspeaker basket and the second loudspeaker basket further form at least one additional point of contact at a second side of the loudspeaker arrangement, opposite the first side in a second direction.

An acoustic resonator is provided that includes a piezoelectric layer, an interdigital transducer (IDT) including a plurality of interleaved fingers on the piezoelectric layer, a substrate, and an acoustic reflector between the piezoelectric layer and the substrate. The acoustic reflector that is on the piezoelectric layer includes alternating first layers of first materials and second layers of second materials. A first acoustic impedance of the first materials is different from a second acoustic impedance of the second materials. A ratio of a pitch of the IDT over a thickness of the piezoelectric layer is less than 10. A first thickness of at least one of the first layers is larger than a quarter of a first wavelength λ1. λ1 is an acoustic wavelength of a shear bulk wave in the at least one of the first layers at a resonance frequency of the transversely-excited bulk acoustic resonator.

An information management apparatus according to an embodiment is an information management apparatus that manages information acquired from a first device mounted on a movable body on which an occupant boards and provided to a second device used by a user at a different place from the movable body, the information management apparatus including: an acquisition portion that acquires information from the first device and the second device; and a provision portion that provides information to each second device based on the information acquired by the acquisition portion, wherein the acquisition portion acquires a first sound at a first position of the movable body and a second sound at a second position that is different from the first position by the first device and acquires motion information of the user by the second device, and the provision portion provides the second device with a sound in which the sound volume ratio of the first sound and the second sound is adjusted in accordance with a motion of the user.

The present disclosure provides a hearing aid system. The hearing aid system comprises a hearing aid main body and an earplug piece, the hearing aid main body is provided with a first playback channel, and the hearing aid main body is used for extending into an ear canal; the earplug piece comprises a supporting connecting layer, a temperature-sensitive deformation layer and an extension heat conduction coating layer, the supporting connecting layer is connected with the temperature-sensitive deformation layer, the extension heat conduction coating layer is connected to the peripheral wall of the side, away from the supporting connecting layer, of the temperature-sensitive deformation layer in a coating mode, and the supporting connecting layer is connected with the hearing aid body; a first playback via hole is formed in the supporting connecting layer, a second playback via hole is formed in the temperature-sensitive deformation layer, and the second playback via hole is used for being communicated with an ear canal; the temperature-sensitive deformation layer is used for being heated to deform and expand in the ear canal, and the extension heat-conducting coating layer is used for extending to deform to fit the ear canal when the temperature-sensitive deformation layer is heated to deform and expand, so that the extension heat-conducting coating layer is clamped and propped against the inner wall of the ear canal. The hearing aid system is good in use comfort in the long-term wearing and using process.

An acoustic signal output device includes a driver unit and a housing that internally accommodates the driver unit. Here, an acoustic signal emitted from the driver unit to one side is set as a first acoustic signal, and an acoustic signal emitted from the driver unit to another side is set as a second acoustic signal. A wall portion of the housing includes a single or plurality of first sound openings for leading out the first acoustic signal to an outside and a single or plurality of second sound openings for leading out the second acoustic signal to an outside. An attenuation rate of the first acoustic signal at a second point with reference to a predetermined first point where the first acoustic signal arrives, the second point being farther from the acoustic signal output device than the first point, is equal to or less than a predetermined value smaller than an attenuation rate due to air propagation. Alternatively, an attenuation amount of the first acoustic signal at the second point with reference to the first point is equal to or more than a predetermined value larger than an attenuation amount due to air propagation.

The invention discloses a sound wave detection method and system for an underground pipeline, and the method comprises the following steps: 1, dynamically adjusting the detection height in the radial direction of a pipeline through a lifting adjustment device of a first sound wave detection mechanism, and enabling a sound wave transmitting end to adapt to the inner walls of pipelines with different pipe diameters; 2, a rotation driving device of a second sound wave detection mechanism controls a sound wave transmitting end to conduct multi-angle rotation scanning around the axis of the pipeline, and the circumferential area of the cross section of the pipeline is covered; 3, based on the pipeline inner diameter D, the material acoustic characteristics and the preset coverage rate eta, motion parameters are generated through a dynamic optimization algorithm; 4, collecting a reflected sound wave signal and carrying out multi-stage processing; through the implementation of the method, a dynamic optimization algorithm of full-dimensional scanning coverage enables the screw pitch error of a spiral track to be small, 100% non-blind area coverage of the cross section of the pipeline is achieved, the self-adaptive focusing lens controls the sound beam focusing angle error to be within + / -2 degrees, and the detection sensitivity of the thin-walled pipe is improved.

The invention discloses a sound production device and intelligent glasses, and relates to the technical field of electroacoustic transduction, a first vibration system of a first sound production unit of the sound production device comprises a first vibrating diaphragm assembly and a first voice coil, and a first magnetic circuit system comprises a first magnetic part and a second magnetic part which are arranged on two opposite sides of the first vibrating diaphragm assembly. The first magnetic part and the second magnetic part are respectively provided with a first magnetic gap and a second magnetic gap corresponding to the first voice coil, a second vibration system of the second sound production unit comprises a second vibrating diaphragm assembly and a second voice coil, and a second magnetic circuit system comprises a third magnetic part and a fourth magnetic part which are arranged on two opposite sides of the second vibrating diaphragm assembly. The third magnetic part and the fourth magnetic part are respectively provided with a third magnetic gap and a fourth magnetic gap corresponding to the second voice coil; a first concave edge is formed on the first magnetic part; and / or a second concave edge is formed on the fourth magnetic part. The sound production device provided by the invention has relatively low distortion, can reduce the sound leakage problem of a far field, has good acoustic performance, and is more compact in matching structure with the whole machine.

The embodiment of the invention provides a sound box, a sound frequency band adjusting method of the sound box and electronic equipment, and relates to the technical field of sound boxes. The sound box comprises a box body, a loudspeaker assembly, at least one adjusting assembly and at least one driving assembly. Wherein an accommodating cavity is formed in the box body; the loudspeaker assembly is arranged in the accommodating cavity and divides the accommodating cavity into a first sound cavity and a second sound cavity. The adjusting assembly is arranged in the containing cavity, connected with the box body in a sealed mode and capable of moving relative to the box body. The driving assembly is connected with the box body, the driving ends of the driving assembly are connected with the adjusting assemblies in a one-to-one correspondence mode, and the driving assembly drives the adjusting assemblies to move relative to the box body so that the adjusting assemblies can adjust the equivalent acoustic volume of at least one of the first sound cavity and the second sound cavity to adjust the sound frequency band of the loudspeaker box. According to the embodiment of the invention, the sound frequency band output by the sound box can be adjusted, and different listening requirements of users can be met.

A stacked acoustic wave device assembly is disclosed. The stacked acoustic wave device assembly can include a first acoustic wave device including a first double acoustic mirror structure having a first solid acoustic mirror and a second solid acoustic mirror, and a first piezoelectric layer between the first and second solid acoustic mirrors. The stacked acoustic wave device assembly can include a second acoustic wave device including a second double acoustic mirror structure having a third solid acoustic mirror and a fourth acoustic mirror, and a second piezoelectric layer between the third and fourth acoustic mirrors. The second acoustic wave device is vertically stacked on the first acoustic wave device such that the second solid acoustic mirror and the fourth solid acoustic mirror are positioned between the first and second piezoelectric layers.

Techniques are described for wirelessly receiving, at first and second speaker assemblies, signals representing left and right audio channels from each of first and second sources, and using the signals, simultaneously playing, on both speaker assemblies, music, computer game audio, computer chat audio, and speech picked up by speaker microphones.

Systems and methods are disclosed in which a playback device transmits a first sound signal including a predetermined waveform. In one example, the playback device receives a second sound signal including at least one reflection of the first sound signal. The second sound signal is processed to determine a location of a person relative to the playback device, and a characteristic of audio reproduction by the playback device is selected, based on the determined location of the person.

This application provides an earphone and a terminal device. The earphone includes a housing with a cavity structure inside, and a sound outlet communicating with the cavity structure. A first sound unit, a second sound unit, and a third sound unit are disposed within the cavity structure, and the third sound unit is a microelectromechanical system (MEMS) unit. The sound frequency of the second sound unit is greater than but less than the sound frequency of the first sound unit. The third sound unit, being a MEMS unit, is located between the first sound unit and the sound outlet. By incorporating the first sound unit, the second sound unit, and the MEMS unit within the earphone, the output bandwidth of the earphone can be fully guaranteed, achieving better full-frequency coverage and superior sound quality.

The utility model discloses a discharge detection device for a dry-type transformer, and the device comprises a sound collection module which is used for collecting sound signals generated during the discharge of the dry-type transformer; the audio pre-amplification module is connected with the sound collection module and is used for carrying out primary amplification on the sound signal to obtain a first sound signal; the frequency selection module is connected with the audio pre-amplification module and is used for screening the frequency of the first sound signal to obtain a second sound signal; the audio amplification module is connected with the frequency selection module and is used for carrying out secondary amplification on the second sound signal to obtain a third sound signal; and the audio output module is connected with the audio amplification module and is used for outputting the third sound signal. According to the utility model, the sound collection module is arranged to collect sound during operation of the transformer, the audio pre-amplification module and the audio amplification module are adopted to amplify the sound to a frequency band which can be heard by people, the sound is output through the audio output module, and an operator hears the sound to judge the discharge condition of the transformer.

A medium conveyance apparatus includes a drive signal output circuit to output a drive signal at a predetermined timing, a first sound wave emitter to output a sound wave based on the drive signal outputted at the predetermined timing, a first sound wave receiver to output a first sound wave signal corresponding to the received sound wave, a second sound wave emitter to output a sound wave based on the drive signal outputted at the predetermined timing, a second sound wave receiver to output a second sound wave signal corresponding to the received sound wave, a processor to determine a state of the medium based on the first sound wave signal and the second sound wave signal, and an output circuit to output the first sound wave signal and the second sound wave signal to the processor at timings different from each other.

The invention provides an active noise reduction stethoscope. The active noise reduction stethoscope comprises a sound receiving device, a sound processing device and a control unit, the sound receiving device is provided with a main microphone and an auxiliary microphone, the main microphone is configured to receive and output a first sound signal, and the auxiliary microphone is configured to receive and output a second sound signal. The sound processing device is coupled to the sound receiving device to receive the first sound signal and the second sound signal, and converts the first sound signal and the second sound signal into a third sound signal and a fourth sound signal in a digital mode respectively. The control unit is coupled to the sound processing device and calculates a correlation between the third sound signal and the fourth sound signal for determining whether to execute an active noise reduction operation.

A vehicle and a method of controlling the same are provided, the vehicle including: a sound output unit including a first speaker mounted at a front surface of an exterior of the vehicle and a second speaker mounted at a rear surface of the exterior of the vehicle; a sensor unit configured to collect vehicle driving information and object recognition information; a first processing unit configured to generate a reference sound using the vehicle driving information and the object recognition information, a second processing unit configured to generate a first sound and a second sound using the reference sound; and a third processing unit configured to control the first speaker to output the first sound and control the second speaker to output the second sound.

The invention discloses an audio system control method, device and system, relates to the technical field of wireless communication, and is applied to an audio system comprising an audio wireless receiving device and a plurality of active sound boxes in wireless communication connection with the audio wireless receiving device. The audio wireless receiving device is used for acquiring a first sound signal, and sending the first sound signal to a plurality of active sound boxes through a first wireless link in a one-transmitting-multiple-receiving mode of analog broadcasting, so that at least two active sound boxes receive the same sound signal and output a corresponding second sound signal. Meanwhile, the audio wireless receiving device obtains a control signal used for adjusting the audio parameters of the plurality of active sound boxes, and sends corresponding audio control information to the plurality of active sound boxes through a second wireless link independent of the first wireless link, so that the plurality of active sound boxes adjust the audio parameters based on the same audio control information. And head-to-tail delay generated by a plurality of sound boxes in a wireless cascade mode is avoided.

A sound processing method obtains first audio data representing first sound, obtains second audio data representing second sound created in advance, analyzes the first audio data, compares the second audio data with an analysis result of the analyzing, reproduces third audio data from the second audio data by omitting a type of sound from the second sound that matches a type of sound in the first sound, based on a comparison result of the comparing, and outputs an audio signal representing the reproduced third audio data.

To promote awakening of a user.SOLUTION: The sound reproduction device 1 includes the timer unit 331 that measures time, the storage unit 32 that stores an alarm time, the detection unit 21 that detects an object in a non-contact manner, the calculation unit that calculates the magnitude of movement of the object on the basis of a detection result obtained by the detection unit, the determination unit 333 that determines whether or not an operation condition that is satisfied when the magnitude of movement of the object is equal to or greater than a predetermined magnitude is satisfied, and the sound reproduction unit 334 that reproduces a sound. The sound reproduction part starts first sound reproduction processing for reproducing first sound when the time clocked by the clocking part reaches the alarm time, and starts second sound reproduction processing for reproducing second sound when an operation condition is satisfied during the execution of the first sound reproduction processing.SELECTED DRAWING: Figure 5

A kind of sound box, including cabinet and the protective cover being arranged in the front of cabinet, first acoustic cavity is equipped in the cabinet, high pitch loudspeaker assembly and bass horn assembly are equipped on the first acoustic cavity, second acoustic cavity is also equipped in the cabinet, the first acoustic cavity is communicated with second acoustic cavity by loudspeaker pipe passing through partition, the loudspeaker pipe is fixedly connected with cabinet, one end of the loudspeaker pipe is arranged in the back of high pitch loudspeaker assembly, the other end of the loudspeaker pipe is inserted into second acoustic cavity. By adding a second acoustic cavity in the cabinet and the loudspeaker pipe that is communicated with the first acoustic cavity and the second acoustic cavity, and one end of the loudspeaker pipe is arranged in the back of the high pitch loudspeaker assembly, the manufacturer selects loudspeaker pipe with different pipe diameter and different length according to actual situation, so that the inside of the loudspeaker pipe helps the reflection and resonance of sound waves, so that the utility model shows more rich tone, and then the sound performance comparable to real musical instrument.

The utility model discloses a whole automobile water-based soft foaming heat preservation and noise reduction structure, which relates to the field of heat preservation and noise reduction structures and comprises a base material layer, first sound absorption layers are arranged at the top and the bottom of the base material layer, and second sound absorption layers are arranged on the first sound absorption layers. Buffer layers are fixedly adhered to the top of one second sound absorption layer and the bottom of the second sound absorption layer on the other side through an adhesive. According to the heat preservation and noise reduction structure, the first buffer block, the second buffer block and the buffer layer are arranged, the first buffer block and the second buffer block can deform after being stressed and then can be compressed, so that impact force can be buffered, the noise reduction structure is prevented from being damaged due to serious impact, the protection effect on the heat preservation and noise reduction structure is improved, and the service life of the heat preservation and noise reduction structure is prolonged. And the first buffer block, the second buffer block and the buffer layer are all made of silica gel materials, so that after the impact force is eliminated, the first buffer block and the second buffer block can be recovered, and the buffer effect can be continuously achieved next time.

The application discloses an audio device and an electronic device, and relates to the field of loudspeakers. The audio device comprises a shell, a full-frequency audio module and a high-frequency audio module. The shell has an inner cavity, and a sound outlet is arranged on the side wall of the shell along a first direction. The full-frequency audio module and the high-frequency audio module are arranged in the inner cavity, the high-frequency audio module is arranged along the first direction with the full-frequency audio module, and the high-frequency audio module is arranged on the side close to the sound outlet. The full-frequency audio module and the high-frequency audio module share a magnetic part. Along a second direction perpendicular to the first direction, the inner cavity of the shell forms a first sound cavity at one end of the full-frequency audio module and the high-frequency audio module, and forms a second sound cavity at the other end. The first sound cavity is in communication with the sound outlet. The application can solve the problem of poor frequency response of the high frequency of the loudspeaker in the related art.