420 results about "Air conduction" patented technology

An acoustic output device is provided. The acoustic output device includes a housing; a bone conduction vibrator configured to generate bone conduction sound waves and transmit the bone conduction sound waves to a cochlea through the housing to produce sound; an air conduction vibrator configured to generate air conduction sound waves, the air conduction sound waves being transmitted to an ear through sound guiding holes in the housing; and a processing module configured to provide the bone conduction vibrator and the air conduction vibrator with a first audio signal and a second audio signal, respectively, the first audio signal and the second audio signal having a frequency division point, the first audio signal and the second audio signal including components with frequencies above and below the frequency division point, respectively. The frequency division point is not less than 600 Hz.

The present disclosure provides an acoustic output device. The acoustic output device may comprise a bone conduction speaker configured to generate bone conduction acoustic waves. The acoustic output device may also comprise an air conduction speaker configured to generate air conduction acoustic waves, the air conduction speaker being independent of the bone conduction speaker. The acoustic output device may further comprise at least one housing configured to accommodate the bone conduction speaker and the air conduction speaker.

The invention provides a self-adaptive distribution transformer for an active power distribution network. The transformer design comprises a transformer shell, and cooling fins are arranged on the periphery of the shell to improve the cooling efficiency. An air guide plate is arranged on one side of each cooling fin and composed of a first inclined plate, a second inclined plate and an arc-shaped turning plate, the first inclined plate and the second inclined plate are arranged in an inclined mode, and therefore air flow is enhanced, and air conduction loss is reduced. Water-cooling assemblies are arranged on the two sides of the transformer, rainwater is collected through a fixed water tank, and water-cooling heat dissipation is achieved through a bottom rainwater conveying assembly. By means of the design, the transformer can automatically adjust the heat dissipation mode according to environment changes, and the safety and energy efficiency of outdoor operation are improved.

The invention relates to a vibrator array for generating tactile feedback and audio frequency, a method and application thereof, the vibrator array comprises an array main body part, the array main body part comprises at least two vibrators, and each vibrator can do reciprocating mechanical motion in one direction to generate vibration; each internal and external connection elastic sheet is connected with the corresponding vibrator and comprises a flat sheet body, an internal connection rib and an external connection rib; the supporting structural member is used for supporting the vibrator and the internal and external connecting elastic sheets; the signal transmission processing part is electrically connected with the vibrator; wherein the vibrator simultaneously realizes massage, vibration tactile feedback and audio playing functions through vibration, and the audio playing function is realized through two modes of air conduction and bone conduction; the integration of massage, vibration tactile feedback and audio playing functions is realized through the same vibrator unit; the vibrator array can generate clear vibration direction and directivity and provide more accurate tactile feedback.

A loudspeaker assembly and a headphone are provided. The headphone includes a housing assembly, a bone-conduction core module, and an air-conduction core module, and an accommodation space. The bone-conduction core module is provided in the accommodation space and vibrates in a first vibration direction, the air-conduction core module is provided in the accommodation space, and the bone-conduction core module and the air-conduction core module are arranged along the first vibration direction and face each other. In the above manner, the present disclosure reduces the influence of the air-conduction core module on the vibration effect of the bone-conduction core module, increases the sound volume, and improves the bone-conduction effect of the loudspeaker assembly, thereby improving the sound quality effect of the loudspeaker assembly.

The invention discloses a phase synchronization compensation algorithm for a bone conduction-air conduction mixed sound field of an earphone, and the algorithm comprises the steps: enabling a bone conduction vibration sensor signal # imgabs0 # and an air conduction microphone signal # imgabs1 # to pass through a wavelet packet decomposition module, obtaining a multi-resolution sub-band coefficient group # imgabs2 # and a multi-resolution sub-band coefficient group # imgabs3 #, and enabling the # imgabs4 # to be a sub-band index;

The invention discloses a noise reduction method and device, equipment, a storage medium and a program product, and relates to the technical field of audio processing, and the method comprises the steps: collecting a bone conduction signal and at least two paths of environment air conduction signals of an earphone wearer through an earphone, based on the bone conduction signal, performing first noise reduction processing on a target air conduction signal of a target direction determined based on the at least two paths of environment air conduction signals to remove a first air conduction component of a relatively low frequency band of an earphone wearer, and obtaining an initial noise-reduced signal; and performing second noise reduction processing on the initial noise-reduced signal based on the bone conduction signal, the at least two paths of environmental air conduction signals and the phase difference of the at least two paths of environmental air conduction signals, so as to remove a second air conduction signal of a higher frequency band of the earphone wearer, and obtain a target noise-reduced signal. According to the method and the device, the noise generated by the earphone wearer in the audio recorded by the earphone is effectively removed.

The invention discloses an artificial cochlea self-sound restoration method and an artificial cochlea sound processor. The artificial cochlea self-sound restoration method comprises the following steps: dividing digital signals acquired by a bone conduction microphone and an air conduction microphone into signal frames; converting the signal frame from an initial time domain signal to an initial frequency domain signal; judging whether the microphone signal is self sound or not; when the signals collected by the bone conduction microphone and the air conduction microphone are self-sound, after the frequency domain signal frame of the bone conduction microphone and the frequency domain signal frame of the air conduction microphone are superposed, a new frequency domain signal is converted into a new time domain signal, and a signal frame after self-sound restoration is obtained; the sound of an implanter is collected from two channels of air conduction and bone conduction and is mixed and output, so that the accuracy of sound collection is improved.

The present description relates to an acoustic output device, comprising: a housing; a bone conduction vibrator, which is used for generating bone-conducted sound waves, the bone-conducted sound waves being transmitted to the cochlea by means of the housing to generate sound; an air conduction vibrator, which is used for generating air-conducted sound waves, the air-conducted sound waves being transmitted to the ear of a user by means of sound guide holes in the housing; and a processing circuit, which is configured to provide a first audio signal for the bone conduction vibrator, and provide a second audio signal for the air conduction vibrator, wherein the processing circuit is further configured to adjust a low-frequency component in the first audio signal or adjust a high-frequency component in the second audio signal. The low-frequency component in the first audio signal or the high-frequency component in the second audio signal are adjusted by means of the processing circuit, such that the ratio of bone-conducted components to air-conducted components in the output of the acoustic output device is variable, so as to adjust high and low frequency output effects of the acoustic output device. Thus, the acoustic output device is suitable for different scenarios, thereby enhancing the use experience of the acoustic output device.

The invention discloses a sound output device. The sound output device comprises a vibration loudspeaker, an air conduction loudspeaker and a signal processing module, the signal processing module comprises a bone conduction signal processing circuit and an air conduction signal processing circuit, the vibration loudspeaker comprises a first vibration assembly, and the first vibration assembly is electrically connected with the bone conduction signal processing circuit to receive a bone conduction control signal; the air conduction loudspeaker comprises a shell and a second vibration assembly, and the second vibration assembly is electrically connected with the air conduction signal processing circuit to receive the air conduction control signal and generate air conduction sound waves based on the air conduction control signal. The first vibration assembly comprises a vibration plate connected with the shell and used for generating bone conduction sound waves, and the second vibration assembly comprises a vibration diaphragm connected with the shell and used for generating air conduction sound waves. By means of the mode, the sound listening effect and the sound leakage problem of a traditional sound output device can be improved, and therefore the user experience is enhanced.

The utility model provides an oxygenation filter which comprises a shell, an adapter connected with the shell and an air conduction pipe connected with the adapter, a water injection cavity and a water suction pump are arranged in the shell, an oxygenation pipeline is formed in the adapter, the water suction pump is arranged at an inlet of the oxygenation pipeline and used for pumping water in the water injection cavity, and the air conduction pipe is connected with the adapter. The whole oxygenation pipeline is of a Venturi tube structure and comprises a first conical section which is gradually narrowed and a second conical section which is gradually expanded, the two conical sections are tightly connected at respective narrow opening parts, and the air conduction pipe is communicated with the oxygenation pipeline at the narrow opening connecting part of the two conical sections. According to the utility model, the oxygenation efficiency can be effectively improved and the noise can be controlled.

An authentication apparatus includes: a calculation unit that calculates, from an air conduction sound signal indicating an air conduction sound of a voice of a target person and a bone conduction sound signal indicating a bone conduction sound of the voice of the target person, an air conduction feature quantity that is a feature quantity of the air conduction sound signal and a bone conduction feature quantity that is a feature quantity of the bone conduction sound signal, and that calculates a target feature quantity that is a feature quantity of the voice of the target person by combining the air conduction feature quantity and the bone conduction feature quantity; and an authentication unit that authenticates the target person on the basis of the target feature quantity.

The utility model discloses a sound production unit and a head-mounted sound production device, the sound production unit comprises a housing assembly, and a bone conduction sound production device and an air conduction sound production device which are arranged in the housing assembly, the housing assembly comprises a contact surface which is used for contacting with human skin and a sound outlet hole through which sound of the air conduction sound production device is sent out; the sounding unit is provided with a middle surface perpendicular to the width direction of the sounding unit, and the gravity center of the bone conduction sounding device and the gravity center of the air conduction sounding device are located on the two sides of the middle surface respectively; the distance D16 between the gravity center of the bone conduction sound production device and the middle surface is smaller than the distance D17 between the gravity center of the air conduction sound production device and the middle surface, so that the vibration sense generated when the bone conduction sound production device works is closer to the middle area of the surface cover, and the use comfort is better.

The present invention relates to the technical field of flue gas purification equipment, and in particular to a multi-stage flue gas elimination device, comprising: an assembly shell, a water tank and an air guide module; the assembly shell is fixedly arranged on an external chimney, the smoke exhaust port of the chimney is located at the bottom of the inner cavity of the assembly shell, and the top of the assembly shell adopts an open design; the water tank is arranged in the inner cavity of the assembly shell, the water tank is located at the top of the chimney, the top of the water tank adopts an open design, and a water solution is pre-stored in the inner cavity of the water tank; the air guide module is arranged on the water tank, the air guide module is connected to the inner wall of the assembly shell, the air guide module connects the smoke exhaust port and the inner cavity of the water tank, and is used to introduce the smoke discharged through the smoke exhaust port into the inner cavity of the water tank. The present invention solves the defect that the existing technology cannot effectively eliminate the particulate impurities floating in the smoke, and has the characteristics of good smoke purification effect.

The invention relates to the technical field of audio signal processing, and discloses a microphone far-field pickup amplitude dynamic range control method, and the method comprises the steps: processing synchronous bone conduction and air conduction signals; respectively extracting feature vectors representing near-field interference and far-field human voice from the bone conduction signal and the air conduction signal; inputting the feature vector into an artificial intelligence decision engine, and carrying out collaborative analysis to generate a gain strategy considering interference suppression and human voice maintenance; and the gain of the air conduction signal is adjusted according to the strategy. The system comprises a signal preprocessing module, a first feature extraction module, a second feature extraction module, an artificial intelligence decision engine and a gain adjustment and reconstruction module. Unambiguous observation is carried out on near-field interference by using the bone conduction signal, the gain control problem when far-field weak human voice and near-field strong interference coexist is solved, and the pickup quality can be ensured while signal clipping can be effectively prevented.

The invention discloses a directional pickup system for intelligent glasses, which relates to the technical field of intelligent glasses and comprises heterogeneous microphone array modules used for being arranged on two sides of glasses legs to form spatial asymmetric array digital microphones and realizing coverage of + / -90 degrees in a horizontal plane and + / -30 degrees in a vertical plane by utilizing a binaural sound source positioning principle. The receiver is used for receiving acoustic signals from the environment. The adaptive beam control module calculates a sound source azimuth angle based on a dynamic beam forming algorithm and the delay inequality of microphone array signals, adjusts digital beam pointing in real time, and updates the frequency to be greater than or equal to 50Hz; according to the multistage noise suppression module, a bone conduction sensor is integrated at a nose pad of a glasses frame, sound source positioning is assisted through jaw vibration signals, environmental noise is suppressed, and a three-stage noise reduction mode is set; and the execution module is used for executing switching of pickup modes based on sound sources with different distances, wherein the pickup modes comprise a near-field mode and a far-field mode. According to the invention, through fusion of bone conduction and air conduction, environment pickup is effectively and adaptively carried out.

The present application mainly relates to an air conduction loudspeaker and an earphone. The air conduction loudspeaker comprises a diaphragm, a retaining ring, and a basket, wherein the diaphragm comprises a vibration body and an annular retaining part connected to the vibration body and arranged on the periphery of the vibration body in an annular configuration, the retaining ring is connected and fixed to the annular retaining part and is sleeved on the basket, the annular retaining part and the retaining ring have a first connection length in the axial direction of the air conduction loudspeaker and have a second connection length in the radial direction of the air conduction loudspeaker, and the first connection length is greater than the second connection length. In this way, the overall size of the loudspeaker can be effectively reduced while the sound quality of the loudspeaker can be effectively improved.

The utility model discloses an ecological window, belongs to smart home equipment technical field, ecological window includes: window frame, ventilation assembly and temperature adjustment member, ventilation assembly includes: connecting frame, fan, cover plate and drive member, connecting frame is connected to the inner side of window frame, connecting frame has the air flow passage that is conducted along the window frame thickness direction, fan is provided in the air flow passage, and the temperature adjustment member is provided with the drive member. The cover plate is movably connected with the connecting frame, and the driving component is in transmission connection with the cover plate to drive the cover plate to open and close the air channel; the temperature adjusting component is arranged in the air flow channel and used for providing cold energy or heat energy for the air flow channel, stable adjustment of the indoor environment can be achieved, the indoor and outdoor air exchange efficiency is more stable, and adjustment and control of the indoor temperature are more stable.

The invention provides an audio signal enhancement method and device, a model training method and device and electronic equipment, and the method comprises the steps: obtaining a first audio signal collected by a bone conduction microphone and a second audio signal collected by a gas conduction microphone, converting the first audio signal and the second audio signal from a time domain to a frequency domain, the method comprises the following steps: acquiring a first frequency domain audio signal and a second frequency domain audio signal, inputting the first frequency domain audio signal and the second frequency domain audio signal into a voice enhancement model obtained by training to obtain an enhanced audio signal fusing a high-frequency signal and a clear consonant signal, and performing voice enhancement by the audio enhancement model according to an audio signal acquired by an air conduction microphone. According to the invention, missing high-frequency signals and consonant-clear signals of the audio signals collected by the bone conduction microphone are extracted, so that the missing high-frequency signals and consonant-clear signals in the audio signals collected by the bone conduction microphone are supplemented, and the problems that the frequency band expansion of the audio signals collected by the bone conduction microphone is distorted and the frequency band expansion of consonant-clear signals cannot be realized are solved; and the quality of the uplink audio signal is improved.

The utility model provides a novel composite conduction mode earphone, the earphone comprises a head bow support, a left air conduction horn and a right air conduction horn, the middle part of the head bow support is provided with a bone conduction horn, the bone conduction horn (1) comprises a bone conduction loudspeaker (2) and a bone conduction loudspeaker cavity box (3), the bone conduction loudspeaker cavity box (3) is composed of a box body (31) and a box cover (32) which are matched with each other, and the left air conduction horn and the right air conduction horn are arranged in the head bow support. The outer side surface of the box cover (32) is a flat surface, the inner side surface of the box cover (32) is provided with a loudspeaker mounting groove (322), the bone conduction loudspeaker (2) is fastened in the loudspeaker mounting groove (322) through a bolt (4), and the earphone further comprises a Bluetooth receiver, and a first audio amplifier, a second audio amplifier and a third audio amplifier which are electrically connected with the Bluetooth receiver. The composite conduction mode earphone combines the advantages of a traditional air conduction earphone and a traditional bone conduction earphone, and is suitable for hearing training and hearing testing of special crowds.

The embodiments of the present disclosure provide a sensor device, including: a sensor assembly with a first resonant frequency and a sound pickup assembly configured to communicate with an external sound of the sensor device through a sound inlet, wherein an acoustic cavity may be formed between the sound pickup assembly and the sensor assembly, when the sound pickup assembly vibrates in response to an air conduction sound transmitted through the sound inlet, vibrations of the sound pickup assembly may change a sound pressure in the acoustic cavity, and the sensor assembly may convert the air conduction sound into an electrical signal based on changes of the sound pressure in the acoustic cavity, wherein the sound pickup assembly may provide the sensor device with a second resonant frequency, and a difference between the second resonant frequency and the first resonant frequency may be in a range of 1000 Hz-10000 Hz.

To provide a speaker assembly with superior acoustic performance. [Solution] The speaker assembly 3 includes a housing assembly, a bone conduction speaker 40, and an air conduction speaker 50. The housing assembly includes a main housing 31 for forming a housing space 300 with one end open. The bone conduction speaker includes a core housing 41 and a transducer device. The core housing is rotatably supported by the main housing and a portion of it is located within the housing space. The core housing is provided with a mounting space 410, the volume of which is smaller than the volume of the housing space. The transducer device is installed within the mounting space. The core housing is provided with a sound guide hole 4106 that communicates with the mounting space.

A speaker assembly is provided. The speaker assembly includes a housing assembly including a main housing, an air conduction speaker disposed within the main housing, and a bone conduction speaker rotatably supported on the main housing and being capable of rotating relative to the main housing along a preset rotation axis. A vibration direction of the air conduction speaker is parallel to the preset rotation axis, and a vibration direction of the bone conduction speaker is perpendicular to the preset rotation axis.

The invention discloses a sound production unit and head-mounted sound production equipment, and relates to the technical field of sound production devices, the sound production unit is in contact with human face skin when worn, and the sound production unit comprises a bone conduction sound production device and an air conduction sound production device which are independently arranged; the bone conduction sound production device and the air conduction sound production device can be independently controlled to produce sound, and the minimum value of the difference value between the working frequency band of the bone conduction sound production device and the low-frequency resonance point of the bone conduction sound production device is larger than or equal to 20 Hz. The sound production unit can utilize respective sound production characteristics of the bone conduction sound production device and the air conduction sound production device, so that the sound listening effect is improved, relatively strong vibration generated by vibration near a low-frequency resonance point of the bone conduction sound production device is reduced, and the use experience is improved.

The earphone (100) comprises a shell assembly (10) and an air conduction loudspeaker (12), and the shell assembly (10) is provided with accommodating cavities (1001 and 1002) and a sound outlet hole (1080) used for communicating the accommodating cavities (1001 and 1002) with the external environment; the air conduction loudspeaker (12) comprises a magnetic circuit assembly (120), a voice coil (122) and a vibrating diaphragm (123), the magnetic circuit assembly (120) comprises a cover body (121) with an opening end (1211) and an annular flange (1212) which is arranged at the opening end (1211) of the cover body (121) and protrudes out of the outer circumferential surface of the cover body (121), the edge of the vibrating diaphragm (123) is fixed to the annular flange (1212) and covers the opening end (1211) of the cover body (121), the voice coil (122) is connected with the vibrating diaphragm (123), and the opening end (1211) of the cover body (121) protrudes out of the annular flange (1212). The diaphragm (123) is located on a side of the cover body (121) facing away from the sound outlet hole (1080). Through the mode, the space utilization rate of the shell assembly (10) can be effectively improved, the overall size of the whole shell assembly (10) can be reduced, and the sound quality can be effectively improved through the mode.

The application discloses a bone conduction speech conversion method based on spectral envelope mapping, comprising the following steps: pre-processing and linear prediction analysis of the bone conduction speech signal, and calculating the LP filter coefficient; mapping the LSF coefficient of the air conduction speech signal corresponding to the bone conduction speech signal by using the trained neural network; controlling the minimum error of the original bone conduction speech signal and the synthesized air conduction speech signal according to the timbre weighting characteristic of the bone conduction speech characteristic; estimating the integer pitch of the bone conduction speech signal through the timbre weighting filter, obtaining the reference signal by passing the linear prediction residual signal through the timbre weighting filter, estimating the fractional pitch to obtain the adaptive codebook vector; obtaining the new reference signal by subtracting the adaptive codebook vector from the reference signal, searching for the optimal excitation in the fixed codebook; synthesizing the air conduction speech signal by combining the optimal excitation and the LP filter of the air conduction speech signal, and correcting the air conduction speech signal.

The utility model discloses an earphone for an industrial high-noise environment. Comprising a rear hanger, a right ear hanger, a left ear hanger, a left face fitting assembly, a right face fitting assembly and a stick microphone assembly, the rear hanger is connected between the right ear hanger and the left ear hanger, the left face fitting assembly is connected with the left ear hanger, the right face fitting assembly is connected with the right ear hanger, and the stick microphone assembly is connected with the left face fitting assembly or the right face fitting assembly; bone conduction loudspeakers are arranged in the left face attaching assembly and the right face attaching assembly, a containing cavity is formed in the stick microphone assembly, a bone conduction microphone is arranged on the upper portion of the containing cavity, an air conduction microphone is arranged on the lower portion of the containing cavity, and the bone conduction loudspeakers, the bone conduction microphone and the air conduction microphone are electrically connected with the electric control board. The bone conduction microphone is used for picking up external sound in a first noise environment, and the air conduction microphone is used for picking up external sound in a second noise environment. Therefore, the voice information of the personnel can be clearly picked up in different environments. Therefore, accurate information intercommunication among personnel in an industrial high-noise environment is ensured.

A speaker assembly and an earphone are provided. The speaker assembly includes a housing assembly, a bone conduction speaker, and an air conduction speaker. The housing assembly includes a main housing forming an accommodation space with an open end. The bone conduction speaker includes a core shell and a transducer. The core shell is rotatably supported on the main housing and partially located in the accommodation space. The core shell is provided with a mounting space, and a volume of the mounting space is smaller than a volume of the accommodation space. The transducer is provided in the mounting space. The core shell is provided with a sound guiding hole in flow communication with the mounting space. In this way, the speaker assembly has a better acoustic performance.

The invention discloses a waistband type wearable computer and a use method, the waistband type wearable computer is firstly tied on the waist, and then a fixing piece arranged on a guide block connected with a lower connecting magnetic head at the rear upper part of the waistband is clamped and fixed on a collar or a wearing article at the rear neck back position of a user; then the neck-hanging intelligent glasses are erected on ears and the nose bridge from the head to the bottom, and all wearing is completed; a user can carry out man-machine interaction on the waistband type wearable computer in a standing, sitting and lying posture. The mobile fine input keyboard and mouse with the PC scientific and technological productivity calculation function is achieved through the palm keyboard, and finger touch input of an intelligent mobile phone is achieved at the same time; a better voice man-machine interaction technology is realized through combined use of the bone conduction microphone sensor and the air conduction headset; the split type intelligent glasses display technology is utilized, a waistband type structure is adopted, the whole battery host and the intelligent glasses are separated, the weight of the glasses is reduced, and meanwhile pulling interference of a neck hanging line is avoided.

The utility model discloses a bone conduction earphone. The bone conduction earphone comprises an earphone head shell and a bone conduction loudspeaker. The earphone head shell comprises a first shell, the first shell comprises a contact area used for making contact with a human face part when the bone conduction earphone is worn and an extension area extending out of an auditory meatus, and the extension area is provided with at least one sound outlet hole; the bone conduction loudspeaker is arranged in the earphone head shell and used for driving the first shell to vibrate. According to the bone conduction earphone provided by the utility model, the vibration of the bone conduction loudspeaker is transmitted to the human face skin through the first shell to realize bone conduction sound transmission, the vibration of the bone conduction loudspeaker drives the gas in the earphone head shell to vibrate to generate sound, and the sound is directly transmitted into the ear canal through the sound outlet hole, so that the air conduction sound transmission, bone conduction and air conduction superposed sound transmission are realized; the sound output hole is closer to the auditory meatus, so that the sound can be transmitted into the auditory meatus more efficiently, the generation of sound leakage is reduced, and the heard air conduction sound is further increased.