254 results about "Transmitted sounds" patented technology

The invention discloses a frequency mixing sound demodulator based on a curled structure and a use method thereof in the acoustics field, the demodulator is used for separating frequency mixing sound mixed by a plurality of sound waves with preset frequencies according to respective frequencies, and the demodulator comprises an air waveguide for transmitting the sound waves, and blocking structures arranged on two sides of the air waveguide for blocking the sound waves from penetrating, and a plurality of curled structures that capture corresponding preset frequency sound waves; curled structures are arranged in the barrier structure on at least one side of the air waveguide at intervals, one end of each curled structure is open, and the other side is closed; a plurality of cross beams for blocking penetration of sound waves are arranged in each curled structure, and an internal channel of each curled structure is divided into different lengths to serve as different acoustic resonant cavities so as to capture the sound waves with different frequencies; the closed end of each curled structure is a detection end of each preset frequency sound wave. The invention solves the problem that the existing method is difficult to instantly separate the frequency mixing sound signal and carry out information transmission.

The invention belongs to the technical field of indoor acoustic effects, and discloses a sound reflecting plate structure for an indoor ceiling and a mounting method of the sound reflecting plate structure. A top plate; the first lap joint edge and the second lap joint edge form a lap joint seam, the surface modeling of the spherical panel is of a water ripple mechanism, and the spherical panel is used for reflecting transmitted sound waves and diffusing the sound waves in a divergent mode; the lapped seam is filled with the first filling material, so that the spherical plate is matched with the top plate to wrap the frame; the spherical plate, the top plate and the first filling material are all made of GRG materials. The sound reflecting plate is designed into a unique water ripple mechanism shape and a specific curved surface subjected to acoustic calculation, and the GRG material with more excellent acoustic performance is adopted, so that the sound field strength is improved, the low-frequency absorption is relatively small, the reverberation time and the sound surrounding feeling in the auditory hall are improved, and the sound quality of the auditory hall is improved. And the early-stage reflected sound and the later-stage reflected sound are balanced, so that a pure natural sound environment is realized.

An acoustic apparatus includes an enclosure, a duct communicating into an inner space of the enclosure, and a speaker unit configured to transmit sound pressures in opposite phases to an inside and an outside of the enclosure, respectively, wherein at least the enclosure and the speaker unit are fixed to a seat, wherein a resonant frequency Fd of a Helmholtz resonator composed of the enclosure and the duct is higher than a resonant frequency F0 of a vibration mass including a mass of a vibrating part of the speaker and a load mass of air in the duct, and wherein a listening position is situated at a position where a direct distance Ld from an exit of the duct is shorter than a direct distance Ls from a diaphragm of the speaker unit.

The utility model discloses a noise reduction assembly applied to a cutting device. In an inner cavity of a cutting platform of the cutting device, a connecting piece is vertically arranged under the position where a cutting assembly carries out cutting action; one end of the connecting piece is connected with the top of the inner cavity, the other end of the connecting piece is pre-buried in the ground, sound waves can be conducted into the ground surface, and the inner cavity is filled with sound absorption cotton; the utility model further discloses a light steel keel cut-off machine, the cutting assembly is arranged on the cutting platform and can move synchronously with the position, to be cut, of the light steel keel, and in the moving process, the light steel keel is cut; the lead screw pair mechanism is arranged on the upper surface of the cutting platform and used for driving the cutting assembly to do reciprocating motion in the moving direction of the light steel keel. The light steel keel structure further comprises the noise reduction assembly, noise generated when the light steel keel is cut off is basically eliminated, the field operation environment is improved, and the harm of the noise is reduced.

The present disclosure introduces a multi-panel structure designed to effectively attenuate sound transmission. The structure comprises a series of panels and absorbers arranged alternately. The panels are constructed from continuous and uninterrupted materials, with at least one panel incorporating a meta-material possessing metallic substance and specific properties. The absorbers feature porous materials with solid and fluid components, and in some cases, may also include meta-materials with solid and fluid components. The panels and absorbers possess optimized characteristics for sound attenuation, such as average bulk density, elastic modulus, and the damping ratio. Recycled materials can be utilized, promoting environmentally friendly construction without compromising sound-blocking capabilities. Additionally, the present disclosure further comprises a computer-implemented method utilizing artificial intelligence models for designing multi-panel structures and a computer simulation method for generating internal structures and compositions to attenuate sound transmission. This innovative solution provides an efficient approach to soundproofing applications.

Provided is an airflow device, for example a respiratory support device, comprising a flow path along which air is displaceable, and an acoustic absorber arranged along at least part of the flow path. Cavities are defined in a material of the acoustic absorber for absorbing sound. The airflow device also comprises an acoustically transparent layer between the flow path and the acoustic absorber. The acoustically transparent layer is configured to transmit sound in the flow path to the acoustic absorber to enable the acoustic absorber to absorb the sound. The acoustically transparent layer has an exterior surface for exposing to the air in the flow path, and an interior surface facing away from the flow path and towards the acoustic absorber.

The invention discloses a phase shift migration-based ultrasonic array imaging method for defects in a steel ingot, which comprises the following steps of: performing two-dimensional Fourier transform on full-matrix time domain data obtained by ultrasonic array detection of the steel ingot to obtain a two-dimensional frequency spectrum of the full-matrix data, and establishing a relationship between a transmitting sound field and a receiving sound field; and gradually extrapolating the sound field through a phase shift factor in the depth direction, recovering a time domain sound field signal through two-dimensional inverse Fourier transform, and obtaining a focusing imaging result in the steel ingot according to the correlation between the transmitted sound field and the received sound field. The method has the characteristics that the image resolution is improved, the method adapts to sound velocity change in a complex medium, complex calculation is not needed, and the calculation efficiency is high.

1. The name of the product under this design: Microphone (CG3). 2. Purpose of this design product: used to transmit sound. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The present disclosure relates to a system (100) for acoustic detection of a physical event, the system (100) comprising: at least one conversion element (10) for converting a physical event into a characteristic sound; an acoustic sensor (40) configured to be mechanically connected to the structure (50) at a distance from the at least one conversion element (10); and a processor (42, 62) coupled to the acoustic sensor (40) wherein the at least one conversion element (10) is configured to react to the physical event by generating a characteristic sound and to introduce the characteristic sound into the structure (50), the acoustic sensor (40) is configured to record the characteristic sound generated by the at least one conversion element (10) as a structure propagation sound propagating through the structure (50), and wherein the processor (42, 62) is configured to detect the physical event based on the characteristic sound recorded by the acoustic sensor (40).

1. The name of the product of this design: Microphone (M06A). 2. Purpose of this design product: used to transmit sound. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention belongs to the technical field of pile foundation anti-sloughing hole online detection, and particularly relates to an impact plain silt-rich layer pile foundation anti-sloughing hole online detection method which comprises the following steps: starting a drill rod machine to work to drive a drill rod to drill downwards, and transmitting sound waves through a sound wave transmitting probe mounted on the drill rod while the drill rod drills. According to the hole collapse prevention online detection method for the pile foundation of the silt-rich layer of the impact plain, through the online detection method, the hole wall state in the drilling process can be monitored in real time, the potential hole collapse risk can be found in time, and therefore preventive measures are taken, and hole collapse accidents are avoided; through sound wave detection and analysis, cracks and cavities of the hole wall can be accurately recognized, the stability of the hole wall is evaluated, and it is ensured that the drilling quality meets the engineering requirement; by using the sound wave emitter, the receiver, the data acquisition module and the processing unit, the automation and intelligence of the detection process are realized, the manual intervention is reduced, and the detection efficiency is improved.

The invention relates to a housing base assembly (28) for securing a housing (26) of a drive train (14) to an underlying surface (30), comprising a supporting sheet (38, 40) which can be in contact with the housing (26) for absorbing weight forces, and a support plate (32) which is connected to the supporting sheet (38, 40) for being secured to and supported against the underlying surface (30), wherein the supporting sheet (38, 40) has a plurality of slots (42) which protrude into a direct load path between the housing (26) and the support plate (32) for the vibration damping of structure-borne sound. Due to the slots (42) in the supporting sheet (38, 40) which is in contact with the vibrating housing (26), which slots can be produced cost-effectively, vibration damping of structure-borne sound can already take place before the vibrations reach the support plate (32), so that it is possible to cost-effectively produce a low-noise drive train (14).

To provide an ultrasonic proximity switch.SOLUTION: What are shown and described are a device and a method for detecting an actuator by a sensor by irradiating the actuator with sound waves. The device is used in particular in safety applications. The sensor and the actuator may move relative to each other. The sensor includes a sound wave transmitter, a sound wave receiver, and a calculation unit. The sound wave transmitter is designed to transmit sound waves in the direction of the actuator. The sound wave receiver is designed to capture sound waves reflected by the actuator and convert the sound waves into an analog signal. The calculation unit detects the actuator by converting the analog signal into a digital signal and comparing the digital signal with a reference signal.SELECTED DRAWING: Figure 1

The invention discloses an intelligent electro-hydraulic breaking hammer self-adaptive control system which comprises a data acquisition module, a rigidity analysis module and a self-adaptive control module, the data acquisition module is used for transmitting sound waves, receiving reflected sound wave signals and extracting reflection time information, the rigidity analysis module is used for analyzing rigidity data, and the self-adaptive control module is used for controlling the rigidity data. The data acquisition module is used for monitoring the material rigidity change and dynamically adjusting working parameters to provide a basis for a crushing strategy, the self-adaptive control module is used for adjusting the striking force and frequency of the crushing hammer in real time according to the material rigidity, and the data acquisition module and the self-adaptive control module are both electrically connected with the rigidity analysis module. And the problem that a traditional breaking hammer encounters a rock stratum interface or hard minerals is effectively solved. The system has the advantages of being high in response speed, high in control precision, high in adaptability and the like, and has high practical value and popularization prospects.

The invention discloses a submarine sediment in-situ low-frequency acoustic measurement system and method. The in-situ low-frequency acoustic measurement system for the seabed sediment comprises a mother ship, a control center, an umbilical cable, a low-frequency sound source transmitting host, a drill rod and a self-contained acoustic receiver, when the low-frequency sound source emission host controls the drill rod to drill into a target detection stratum, the self-contained acoustic receiver is put into the drill rod, after the drill rod clamps the self-contained acoustic receiver, the self-contained acoustic receiver is pressed into the target detection stratum, and the drill rod is used for drilling seabed sediments; the low-frequency sound source transmitting host is used for transmitting sound wave signals with different frequencies, and the self-contained acoustic receiver processes and converts the received sound wave signals with different frequencies into data and stores the data; the control center reads data measured by the self-contained acoustic receiver and analyzes the data to obtain sound velocity and sound attenuation of the seabed sediment at different frequencies. According to the invention, the accuracy of ocean sediment acoustic measurement can be improved, and the frequency range of ocean sediment acoustic measurement is increased.

An apparatus comprising means configured to: obtain at least one audio signal; determining at least one direction parameter of at least one propagating sound associated with the at least one audio signal; determining at least one direction of at least one sound source associated with the at least one audio signal; modifying at least one direction parameter according to the determined at least one direction; and outputting the modified at least one direction parameter.

The utility model discloses a multi-tuning fork mechanical leakage listening rod, which relates to the technical field of pipeline detection and comprises a supporting rod, a mounting rod is mounted at the top of the supporting rod, a leakage listening assembly is arranged at the bottom of the supporting rod, and a connecting rod for adjusting the use length is arranged at the top of the supporting rod. And sound transmission rods are arranged in the connecting rod and the mounting rod. The beneficial effects of the utility model are that the first flange plate and the second flange plate are fixed through the bolts, and the connecting rod can be installed between the supporting rod and the installation rod, thereby achieving the effect of adjusting the use length, avoiding the problem of insufficient length during the detection of a deeper underground pipeline, and improving the detection precision through arranging a plurality of groups of tuning forks. The sound frequency can be distinguished more finely, the sensitivity and accuracy of water leakage detection are improved, the tuning fork transmits sound to the sound transmission rod through the sound listening rod, and the sound amplification cover amplifies the sound transmitted by the sound transmission rod.

Embodiments of the present application relate to the technical field of audio products, and disclose a sound cavity structure and an electronic device. The sound cavity structure comprises a cavity body. The cavity body is provided with an inner cavity, a mounting hole in communication with the inner cavity and used for connecting a loudspeaker, and a sound outlet hole in communication with the inner cavity. The inner cavity is provided with a sound transmission channel for transmitting sound emitted by the loudspeaker to the sound outlet hole. The sound transmission channel comprises at least one layer of sub-channels arranged in the axial direction of the mounting hole, and there are a plurality of sub-channels located in a same layer. Moreover, the lengths of the plurality of sub-channels gradually increase in a direction away from the center of the inner cavity, and two adjacent sub-channels are in communication with each other. The sound cavity structure and the electronic device provided by the embodiments of the present application can enhance the bass effect of the electronic device within a limited space at low costs.

1. The name of the product of this design: microphone. 2. Purpose of this design product: used for transmitting sound and amplifying sound. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

Provided is an ultrasonic proximity switch. Apparatus and methods for identifying an actuator by a sensor by applying sound to the actuator are shown and described. The device is particularly used in security applications. The sensor and the actuator can move relative to each other, and the sensor comprises a sound wave transmitter, a sound wave receiver and a calculation unit. The sound wave transmitter is configured to transmit sound waves in the direction of the actuator. The sound wave receiver is further configured to receive the sound wave reflected from the actuator and to convert it into an analog signal. And the calculation unit converts the analog signal into a digital signal, and realizes the identification of the actuator by balancing the digital signal with a reference signal.

1. The name of this design product: interpretation machine (for scenic spot explanation). 2. Purpose of this design product: used for transmitting sound and amplifying sound. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The utility model discloses a sounding unit, a sounding assembly and an eyeshade. The sound production unit comprises a shell and a loudspeaker, and the shell comprises an accommodating cavity used for accommodating the loudspeaker; the sound guide cavity is communicated with the accommodating cavity, and the sound production direction of the loudspeaker faces the sound guide cavity; and the sound outlet is communicated with the sound guide cavity. In the sound production unit, a sound guide cavity communicated with an accommodating cavity can be used for transmitting sound produced by a loudspeaker; and the sound emitted by the loudspeaker can be reflected in the sound guide cavity, so that the sound is reverberated, the sound is more vigorous, and the sound quality is further improved. According to the sound production unit, the sound outlet is communicated with the sound guide cavity, so that sound reflected in the sound guide cavity can be concentrated and guided out through the sound outlet, the sound can be more concentrated and has higher directivity, and the sound production unit has a better sound effect in a sound transmission angle range of the sound production unit.

The invention relates to a method for locating an anomaly in a rotor blade (6) of a wind turbine (1), comprising the following steps: - Detection of airborne sound by means of at least one airborne sound sensor (11, 21, 31) arranged within the rotor blade (6); - Detection of structure-borne sound by means of at least one structure-borne sound sensor (12, 22, 32) arranged in or on the rotor blade (6); - Determining time points (t K , t L ), to which an event in which airborne sound and structure-borne sound are emitted at an unknown origin position in or on the rotor blade (6) is reflected in the detected airborne sound and in the detected structure-borne sound; - Determining a time difference (Δt) between the times (t K , t L ); and - Determining the origin position based on the time difference (Δt) and the positions of the airborne sound sensor (11, 21, 31) and the structure-borne sound sensor (12, 22, 32). The invention further relates to an arrangement suitable for carrying out the method for locating an anomaly in a rotor blade (6) of a wind turbine (1).

The application provides a cylindrical array sonar system and a target detection method based on high-resolution beam forming. The method comprises the following steps: converting a beam forming weight vector of a received sound wave signal into a Kronecker product, combining a joint probability density model to construct a negative log-likelihood function, and optimizing a vector in an azimuth dimension and an elevation dimension through a preset direction constraint condition to form a high-resolution beam; performing correlation analysis on echo signals reflected by a target at different azimuth angles and elevation angles and on transmitted sound wave signals at different time delays; constructing a three-dimensional matrix containing a distance, an azimuth angle and an elevation angle according to a correlation analysis result, performing normalization processing on the three-dimensional matrix to eliminate signal intensity differences, and outputting a target detection positioning result. Through the combination of Kronecker integral decomposition and three-dimensional matrix modeling, the application realizes high-resolution joint positioning detection of a target in an azimuth angle, an elevation angle and a distance dimension, effectively eliminates signal intensity differences, and improves positioning accuracy.

A hearing device with an optical sensor includes: a light source (212, 300, 304, 308, 402) configured to emit light; a photodetector (214, 404) configured to detect light emitted by the light source after it has passed through tissue of a subject; an audio receiver (116, 202) configured to transmit sound to the subject; and a dome structure (120, 206) configured to conform to the shape of the ear canal when the hearing device is in the subject's ear canal. The output of the light source (212, 300, 304, 308, 402) and the input of the photodetector (214, 404) are separated by the dome structure (120, 206), and the dome structure (120, 206) absorbs and / or reflects at least a portion of the light emitted by the light source.

The utility model belongs to the field of electronic equipment, and particularly provides a Bluetooth earphone. The Bluetooth earphone comprises an earphone main body device and an external function device, the earphone main body device comprises a main function block and an ear hanging rod, the main function block can transmit and receive sound, one end of the ear hanging rod is connected with the main function block, the other end of the ear hanging rod is provided with a first electric connecting piece electrically connected with the main function block, and the ear hanging rod is used for being hooked on the ear of a user; an auxiliary function block is arranged in the external function device, one end of the external function device is provided with a second electric connecting piece electrically connected with the auxiliary function block, the external function device is detachably connected with the earphone main body device, and the first electric connecting piece is electrically conducted with the second electric connecting piece when the external function device is connected with the earphone main body device. The earphone main body device can be matched with external function devices with different functions for common use, and the function flexibility and interestingness of the Bluetooth earphone are effectively improved.

The utility model provides a loudspeaker structure based on vibration sound transmission, which relates to the technical field of electroacoustic conversion devices, and comprises an upper cover assembly, a voice coil assembly, a magnetic circuit assembly and a lower cover assembly, and the surface of the upper cover assembly is provided with a heat dissipation hole I, a positioning hole and a fixing hole. According to the utility model, the magnetic circuit assembly and the voice coil assembly which are modularly designed are matched, an innovative structure that the voice coil is fixed and the magnetic circuit is movable is adopted, an electric signal is directly converted into mechanical vibration to be conducted to a human body, effective conversion from a sound signal to somatosensory vibration is realized, and the limitation that a traditional loudspeaker can only transmit sound waves through air is overcome; the heat dissipation holes and the ventilation grooves arranged in the upper and lower cover assemblies form convection heat dissipation channels, the heat conduction performance of the metal heat dissipation fins is matched, the heat dissipation problem during working of the vibration horn is effectively solved, long-time stable operation of equipment is guaranteed, meanwhile, the elastic supporting structure of the elastic pieces is utilized, vibration loss is reduced, and vibration conduction efficiency is improved.

The invention discloses an audio module and an electronic device. The audio module comprises a sounding body, a connecting body, a second vibration piece and a transmission piece. The sounding body comprises a first vibration member and a magnetic driving member in magnetic excitation cooperation with the first vibration member, and the magnetic driving member is used for driving the first vibration member to vibrate and sound. The connecting body is fixedly connected with the sounding body, and the connecting body comprises a hollow hole. The second vibration piece is arranged on the connecting body and is opposite to the first vibration piece in the depth direction of the hollow hole. The transmission part is arranged between the first vibration part and the second vibration part, and at least part of the transmission part is arranged in the hollow hole, so that the first vibration part transmits sound waves to the second vibration part through the transmission part. The sound transmission effect can be improved, and the auditory experience of the user can be optimized.

To provide an acoustic output device which utilizes a combination of an air-transmitted sound with a bone-transmitted sound produced through bone transmission, and therefore can reproduce a more natural and realistic stereophonic sound regardless of the shapes of ears, the differences among individuals or the faultiness in a recording system or a regeneration system. [Solution] An acoustic output device is provided, which is equipped with an air-transmitted sound display unit for displaying an air-transmitted sound and a bone-transmitted sound display unit for displaying a bone-transmitted sound, wherein the bone-transmitted sound display unit is located at a position which is not in the vicinity of an ear of a user when the user puts on the acoustic output device. According to the acoustic output device, a stereophonic sound can be regenerated regardless of the shapes of ears, the differences among individuals or the faultiness in a recording system or a regeneration system.