739 results about "Sound system" patented technology

The invention discloses an intelligent sound effect processing system for an automobile DSP (Digital Signal Processor) power amplifier, particularly relates to the field of optimization of a vehicle-mounted sound system, is used for solving the problem of insufficient sound effect consistency and intelligent adaptation in a dynamic sound field, and is characterized in that acoustic data are acquired in real time through a microphone array, and a three-dimensional acoustic geometric model is constructed by combining ray tracing and an image source method; sound wave propagation paths and dynamic changes are accurately captured; frequency bands of low-frequency, intermediate-frequency and high-frequency signals are divided, spectrum distribution differences and gain fluctuation centers of all seats are evaluated, and a sound field consistency adjustment coefficient is generated and used for guiding design and optimization of a directional beam forming filter, adjusting amplitudes and phases of all sound channels, forming directional sound beams and suppressing noise interference; therefore, the method can dynamically adapt to the acoustic environment change in the vehicle, improves the sound effect balance and high fidelity, and enhances the auditory experience and satisfaction of passengers.

The invention discloses an underwater focusing intense sound system and method based on phase control, and relates to the technical field of focusing intense sound, and the technical scheme is characterized in that a measurement and control upper computer is used for controlling the emission and detection of a trigger signal; the phase control signal generator is used for controlling a phase control signal of sound wave emission; the multi-channel power amplifier is used for driving the acoustic emission phased area array, and the acoustic emission phased area array is used for emitting acoustic waves; the area array calibration hydrophone is used for receiving signals of reflected sound waves; the target calibration sound source is used for transmitting a signal pulse width, the target sound field measurement hydrophone is used for receiving the signal pulse width transmitted by the target calibration sound source and forwarding the signal pulse width to the measurement and control upper computer, and the measurement and control upper computer receives the forwarded signal pulse width for system evaluation and correction. By generating the high-energy strong-focusing sound field and combining the actual underwater signal propagation process, accurate positioning and control of the underwater strong sound field can be completed, so that accurate focusing irradiation and high-resolution imaging of a long-distance small target are realized.

The invention relates to an electrostatic vibrating diaphragm automobile audio which is mainly used for an electric vehicle and can compensate vehicle-mounted electromagnetic interference audio and solve the problem of electromagnetic interference of a motor PWM switch and rotating speed harmonics on an audio system. The electrostatic diaphragm automobile sound system comprises an electrostatic diaphragm loudspeaker and an interference feature extraction module, the rotating speed of a motor and the PWM frequency are obtained through a CAN bus, and a dynamic interference feature set is analyzed and extracted through adaptive window length FFT; the EMI quantification module is used for calculating an electromagnetic pollution index at a frequency band of 8kHz-20kHz, and triggering compensation when the electromagnetic pollution index exceeds a threshold value of-40dB; the dynamic notch compensation module is used for generating an inversion signal; according to the double-loop feedback control module, the amplitude is adjusted through PID of an inner loop, and the phase is optimized through gradient descent of an outer loop so as to minimize THD. The method comprises five steps of signal acquisition, feature extraction, interference quantification, dynamic compensation and signal injection. Interference frequency drift can be accurately tracked, a tone quality MOS value is improved after compensation, and an over-compensation risk is avoided.

A sound system capable of reducing the number of speakers required for performing localized reproduction in stereo is provided. A first speaker emits a sound based on an L (2n−1)-th processed acoustic signal with signal processing to make it audible in a first region in an L direction to an L (2n−1)-th acoustic signal and an R (2n)-th processed acoustic signal with signal processing to make it non-audible in a fourth region in an R direction to an R (2n)-th acoustic signal, and a second speaker emits a sound based on an L (2n)-th processed acoustic signal with signal processing to make it non-audible in a second region in an L direction to an L (2n)-th acoustic signal and an R (2n−1)-th processed acoustic signal with signal processing to make it audible in a third region in an R direction to an R (2n−1)-th acoustic signal.

A sound system is shown in the form of a speaker with or without a speaker box. A front member may be used with a speaker support, with the speaker mounted to the speaker support, thus comprising a speaker assembly. The front member of the speaker assembly may include an elongate open portion with a top end and a bottom end and the speaker positioned adjacent to the elongate open portion between the top end and the bottom end. The speaker assembly may be coupled to a portion of the vehicle seat which is not obstructive to the positioning of a user in the vehicle seat. This combination may be used in a vehicle seat but also in a backpack, a chair, personal gaming seat, arcade gaming seat, gambling machine seat, bed, massage table or any other similar device.

A metal-free signal cable made of at least 24 carbon rovings twisted together for use in music reproduction as a loudspeaker cable, small signal cable or bridge, which is kept free from external influences by spacers made of electromagnetically practically neutral aluminum-magnesium alloy. Even the highest-quality hi-fi systems sound significantly more energetic, clearer, more accurate, more tangible, and even more "in the room" when using my invention. Transients are much more realistic, the reproduced stage size increases significantly, the sound and positioning of the instruments involved are noticeably improved, and each individual note becomes significantly more subtle, complex, and rich in nuance. Even the smallest sound events become perceptible, which are lost with conventional solutions.

This application relates to the field of audio noise reduction, and provides a method and system for noise reduction in aircraft simulator sounds, a device, and a medium. The method includes: acquiring sound data from an aircraft simulator sound system; classifying the sound data to obtain classified audio data; performing Short-Time Fourier Transform (STFT) processing on the classified audio data to obtain spectral frames; performing noise reduction processing on the spectral frames by using a neural network, to obtain processed spectral frames, where the neural network includes a recurrent neural network and a Deep Q-network (DQN); and performing inverse STFT on the processed spectral frames to obtain denoised audio. This application can achieve low-cost and efficient noise reduction for sounds.

The invention relates to a vehicle warning tone dynamic adjustment method and system based on multi-dimensional perception. According to the method, environment data are acquired, a multi-dimensional feature matrix is constructed, scene classification labels and sound field coverage parameters are analyzed based on the matrix, then an acoustic physical model is called to generate an environment self-adaptive acoustic parameter group, pedestrian behavior prediction and regional voice features are fused to implement multi-modal optimization on acoustic parameters to generate a prompt tone template, and the prompt tone is obtained. A directional sound field signal is synthesized through a beam forming technology, pedestrian response data is collected, finally, a parameter mapping rule and an acoustic physical model are continuously updated based on feedback information, a technical path of environmental perception, dynamic parameter adjustment, directional output and closed-loop optimization is formed, the self-adaptive capacity of the prompt tone system to complex traffic scenes is achieved, and the prompt tone system has a wide application prospect. While the warning effectiveness is guaranteed, the environmental interference is reduced, different regional cultural characteristics and pedestrian perception characteristics are considered, and the safety and environmental friendliness of human-vehicle interaction are integrally improved.

The invention discloses a spatial sound effect test method and system for a sound system. The method comprises the following steps: S1, synchronously acquiring multi-modal sensing data of a test environment in a preset stage; s2, generating a three-dimensional sound pressure distribution thermodynamic diagram, and constructing an initial sound field model based on the three-dimensional sound pressure distribution thermodynamic diagram; s3, generating a corrected sound field model, and synchronously recording vibration data acquired by the triaxial accelerometer; s4, generating a sound image positioning trajectory diagram, and calculating a deviation angle between an actual sound image position and a theoretical position; and S5, determining the sound effect quality score of each test stage. According to the method, a closed-loop test framework of physical environment perception, sound field real-time modeling, man-machine interaction analysis and fault linkage traceability is constructed, a full-process test solution covering a hardware state, acoustic characteristics and human factor perception is provided for an immersive audio system, and the spatial sound effect reliability of digital playing equipment is remarkably improved.

The invention discloses a sound system with DSP sound effect enhancement processing, which belongs to the technical field of audio processing and comprises an audio input module, a data acquisition module, a DSP processing unit, an audio output module and a user interaction module. By acquiring characteristic data (such as audiogram and heart rate) of a hearing impaired person or a child in real time, a DSP processing unit dynamically calls a targeted algorithm (weak hearing frequency band compensation and voice rhythm adjustment), and a multi-frequency band equalization and noise suppression technology is combined, so that an optimized audio signal adaptive to user requirements is output. The problem that a traditional sound system cannot adapt to special crowds in a personalized mode is solved, the sound effect definition and user experience are remarkably improved, and the system is suitable for education, medical treatment and family scenes.

The invention relates to a method for outputting an adaptive soundscape (3) in a vehicle interior depending on the driving situation, wherein an in-vehicle processing unit imparts a driving-dependent effect to the sound tracks (4) of a song (5) broken down into sound tracks (4) and controls a sound system of the vehicle to output the correspondingly manipulated sound tracks (4) via in-vehicle loudspeakers. The inventive method is characterized in that - the computing unit extracts a sound track characteristic sound track section from each sound track (4), wherein the computing unit generates a base sound track section (7.1) with a first sampling rate and a first time duration and at least one layer sound track section (7.2) with a second sampling rate and a second time duration using granular synthesis, wherein the first sampling rate is smaller than the second sampling rate and the first time duration is larger than the second time duration; and - the computing unit causes the output of the basic sound track section (7-1) when the vehicle is started and, depending on the driving situation, causes the output of a layered sound track section (7.2) for each driving event (1) when driving events (1) occur.

1. The name of the design product: outdoor wireless sound. 2. The use of the design product: the design product is used to play audio. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

The invention discloses a volume adjusting method and system of a vehicle-mounted sound system, electronic equipment and a storage medium, and relates to the field of vehicle control, and the method comprises the steps: obtaining vehicle operation information, and starting a passenger detection system according to a vehicle motion state; passenger vision related information is obtained by starting a passenger detection system; through a multi-modal fusion algorithm, generating judgment information of the state of the passenger in the vehicle, and judging whether the output volume of the vehicle-mounted sound equipment is greater than a preset playing volume threshold value or not; if yes, judging whether the judgment information of the passenger state in the vehicle confirms that the passenger is in a sleep state; judging whether the in-car entertainment system has an active media focus or not according to the sleep state; if yes, a dialogue manager is started, and inquiry voice is directionally projected to the position of the driver for voice interaction; judging whether a multimedia volume reduction instruction is received or not through voice interaction; according to the scheme, the sleep comfort level of passengers is improved, and the distracting risk of drivers is reduced.

The invention concerns a method for processing an audio signal containing a plurality of in particularly timely synchronized audio signals, wherein the plurality of audio signals comprises a first voice sound portion from a first sound source and at least one second voice sound portion from a second sound source spatially distanced from the first sound source; and at least a non-voice portion and each audio signal of the plurality of audio signals recorded by a microphone of a plurality of microphones, wherein the microphones of the plurality of microphones are spatially separated from each other. The plurality of recorded audio signals are processed to obtain voice tracks and the position of the sound sources and generate one or more audio objects therefrom, these audio objects configured to be played back on a variety of sound systems.

The invention discloses a mounting mechanism for mounting a vehicle-mounted sound system, the vehicle-mounted sound system and a vehicle. The mounting mechanism includes a housing and a locking assembly. The shell is provided with an accommodating cavity for accommodating a sound box body of the vehicle-mounted sound box; the locking assembly comprises a pressing piece and a spring bolt, and the pressing piece and the spring bolt are arranged in the shell. And the pressing piece can push the spring bolt to move so as to unlock the sound box body from the accommodating cavity or lock the sound box body in the accommodating cavity. Therefore, the mounting mechanism is simple in structure, and the manufacturing and maintenance cost is reduced. Moreover, the vehicle-mounted sound system can be connected with the vehicle for cooperative use and can also be detached from the vehicle to be used as an independent sound system, so that the use scenes of the vehicle-mounted sound system are greatly enriched, the vehicle-mounted sound system is successfully expanded to the space outside the vehicle, and the inconvenience of carrying the sound system by a user is avoided.

An an acoustic system, which is applied to a vehicle, includes a detachable speaker and a base device. The detachable speaker includes a first housing having a positioning groove, a joining groove and a latching rod arranged in the engagement groove. The base device includes a second housing having an accommodating groove, a positioning member disposed on the lateral wall of the accommodating groove and a locking member disposed on the bottom surface of the accommodating groove. When the detachable audio speaker is selectively joined to the base device, the detachable speaker is accommodated in the accommodating groove, the positioning disc of the positioning member is joined to the positioning groove, and the locking member locks the latching rod.

Provided is a method for optimizing in-vehicle sound field. In the method, firstly calculates the actual acoustic response of each seat in the cabin to the preset audio signal played by each speaker, and calculates ideal acoustic response of the preset audio signal at the best listening position in the listening room. Then, based on that the actual acoustic response is consistent with the ideal acoustic response, the sound field of each seat in the cabin is reconstructed to obtain the sound field reconstruction result of each seat, so that the sound system controls each speaker to perform the sound reproduction of the audio signal to be played based on the sound field reconstruction result. Therefore, the actual acoustic response at each seat is consistent with the ideal acoustic response of the listening room, thus ensuring the acoustic experience of the passengers at each seat in the cabin.

An acoustic system includes an interior member for a conveyance including at least one speaker; a state detection unit that detects a state of an occupant or the interior member; and a control unit that is connected to the speaker and the state detection unit, and controls the speaker. The control unit includes a state determination unit that determines the state of the occupant or the interior member based on information received from the state detection unit, and an acoustic control unit that controls, when sound is emitted from the speaker, at least one of a volume, a tempo, and a direction of the sound emitted from the speaker, based on the determined state of the occupant or the interior member.

The invention relates to vehicle cabin simulation for audio tuning and testing. A method of simulating a vehicle cabin for audio tuning and / or testing and a corresponding system, the method comprising obtaining (17) and storing (20) 3D impulse responses corresponding to individual loudspeakers in the vehicle cabin to be simulated. At a location remote from the vehicle, a multi-channel input audio stream (22) is generated and the individual channels are processed (23) by a real-time convolution process to create an audio stream in surround sound format as output. An audio stream output (24, 32), e.g. In a panoramic sound format, may be decoded (33) and played back in the audiometry room so that a tuning engineer may adjust parameters of the input audio stream (22, 28) delivered in real time to the simulated environment listening experience. In this way, the parameters can be optimized and applied back to the sound system of the real-world vehicle.

The utility model discloses a recoverable impact type sounding system device, and belongs to the technical field of geological exploration equipment. The device is composed of a take-up and pay-off winch, a guide pulley, an ejection device, an impact sounding probe and a measurement and control cable. A winch is automatically controlled through a winch control unit, the take-up and pay-off speed is fed back and adjusted through a tension sensor, and dual-mode control is adopted for different operation water depths of 0-5 m and 5-50 m. The ejection device energizes the probe through the energy storage spring, and the locking mechanism achieves automatic locking and releasing. The impact sounding probe adopts a standard structure and is provided with various sensors, so that data can be stably acquired and wirelessly transmitted. The device can accurately control probe putting, is suitable for operation at different water depths, has good recoverability, effectively overcomes the defects of traditional sounding equipment, and improves the efficiency of geological exploration and the accuracy of data.

The invention relates to a speaker (1) comprising a coil arrangement (2) with at least two voice coils (3a, 3b), a magnet system (4) and a membrane (10) being fixed to the coil arrangement (2) and the magnet system (4). The membrane (10) has a first compliance (c1) and together with the coil arrangement (2) causes a first resonance frequency (fres1) for an oscillation of the membrane (10). In addition, the speaker (1) comprises a second connector (14, 17, 17a, 17b, 24, 25a, 25b) with a second compliance (c2), which interconnects the voice coils (3a, 3b). The second connector (14, 17, 17a, 17b, 24, 25a, 25b) together with the voice coils (3a, 3b) causes a higher second resonance frequency (fres2) for the oscillation of the membrane (10). Moreover, the invention relates to an electronic sound signal circuit (18), which is designed to output coil signals (SO1, SO2) having a frequency dependent phase shift (φ). In addition, invention relates to a sound system comprising an electronic sound signal circuit and a speaker of the above kind and to a method for manufacturing a coil arrangement (2).

The invention discloses a sound equipment fault diagnosis system and method based on artificial intelligence, and belongs to the technical field of fault diagnosis, and the method comprises the steps: inputting training data into an equipment diagnosis model for training, and outputting the parameters of the trained equipment diagnosis model; collecting original data of the sound equipment unit; calculating a standard residual tensor of the preset window; calculating a trend abnormal strength index of each unit; collecting equipment structure topology; constructing a sound system structure diagram; extracting a context feature of each node in a structural neighborhood through graph convolution, fusing a node state and a neighbor change degree through an attention mechanism to obtain a joint embedding vector, and calculating based on an embedding distance and a structural edge weight to obtain an attention matrix; and calculating a response score, and outputting a response action set and a response record. The embedded driving response module is diagnosed, actions such as alarm, adjustment and isolation are automatically triggered based on the node state and structure propagation relation, and intelligent closed-loop control from fault recognition to system response is truly achieved.

The invention discloses an airport fire fighting truck simulator, which has the technical structure that the simulator comprises a cockpit body, an instructor control system, a computer simulation system, a visual system and a sound system, adopts a modular design, and integrates 1: 1 real truck original components; real-time synchronization and real-time data interaction of signals of multiple subsystems are achieved through the CAN bus controller and the master controller. Control signals of the driving control system and the fire-fighting equipment operating platform are accessed to the visual host through data lines to drive the vehicle dynamics model, the airport environment simulation and the aircraft fire and fire extinguishing interaction system in real time to generate dynamic three-dimensional visual and sound effect feedback; the teacher console can monitor operation of students in real time, dynamically adjust training scenes and synchronously display the fire extinguishing effect through the visual host, double-person cooperative training, multi-mode switching and complex scene simulation are supported, and the system has excellent application and popularization prospects in special fire extinguishing scenes of airports.

There is provided an acoustic system for a user who uses a seat of an airplane, an automobile, or the like, which reproduces a sound that cannot be heard by surrounding users without using earphones or headphones. An acoustic system including a speaker system including one speaker unit that emits a sound based on an acoustic signal of a predetermined sound source, in which a sound emitted from the speaker unit is hearable in a region to be audible near the speaker unit, and by a sound emitted from the speaker unit in a back surface direction coming around to a front surface direction, the sound emitted from the speaker unit in the front surface direction and the sound emitted from the speaker unit in the back surface direction cancel each other in a region in the front surface direction far from the speaker unit.

The invention provides an audio processing method, an audio processing device and a computer storage medium. The audio processing method is applied to the bathroom sound system. The audio processing method comprises the following steps: acquiring an original playing audio and a mixed audio signal acquired by a microphone; extracting a residual noise signal based on the original playing audio and the mixed audio signal; obtaining a dynamic gain based on the residual noise signal and a preset auditory masking threshold; and processing the original playing audio according to the dynamic gain, and obtaining and outputting a gain playing audio. Through the audio processing method, dynamic gain compensation can be realized for a bathroom scene, audio output can be dynamically adjusted according to environmental noise, intelligent noise reduction and adaptive adjustment are realized, and a bathroom sound box is ensured to provide rich and fine sound effect performance.

The invention discloses a movable sound box which comprises a sound box body, a dust cover, a loudspeaker unit, a control unit and a movable airflow impact assembly. According to the invention, the two channels of the upper sound production opening and the lower sound production opening are arranged, so that the structure is flexible and convenient to use, the control unit drives the mobile shell and the loudspeaker unit to move up and down, and when the loudspeaker unit is driven to directly face the upper sound production opening, the lower air injection cover directly faces the lower sound production opening to inject air. When the loudspeaker unit faces the lower sound production opening, the upper air injection cover injects air directly facing the upper sound production opening, and the lower air injection cover injects air directly facing the lower sound production opening. At the moment, sound production is carried out through the lower side sound production opening, and air flow emitted by the upper air injection cover impacts the dust cover on the upper side sound production opening, so that the loudspeaker unit normally produces sound, and meanwhile, the dust cover is flexibly, conveniently and quickly cleaned.

The invention discloses an audio control method, a storage medium, a program product, an electronic device and a vehicle, according to the scheme, an audio system is controlled to output audio responses to a plurality of first sound field areas, and the plurality of first sound field areas are formed based on position information of people in the vehicle. The problem that an existing automobile sound system is fixed in sound field and cannot adapt to dynamic changes of passengers, and consequently acoustic experience is poor is solved.

The invention belongs to the technical field of automobile safety, and discloses an automobile drunk driving prevention system and method based on passenger state and air alcohol detection, an alcohol concentration detection module comprises an alcohol sensor in a driver area and an alcohol sensor in a public area / passenger area in an automobile; the passenger state detection module comprises a seat sensor and a camera; the central control unit is mounted below a vehicle instrument panel; the active expiration reinspection module is integrated in a steering wheel scheme, or is designed into an independent small handheld or fixed mouthpiece; the actuator is connected to an original start button circuit, a transmission control unit (TCU) or an engine control unit (ECU) of a vehicle through a relay or a control signal wire harness and sends a'start / operation limiting 'instruction. The early warning device utilizes an original instrument panel display system, a horn system and a sound system of the vehicle. According to the invention, passenger positioning and specific area alcohol concentration monitoring are integrated, and the risk of passenger drinking misjudgment caused by only depending on the overall concentration in the vehicle is greatly reduced.

The invention discloses a training aircraft flight training simulator system in the field of aircraft training simulator systems, which comprises a cabin and instrument indicating system, a visual imaging display system, a flight resolving system, a control and control load system, a cabin buffeting system, a sound system, a console system and a computer network, the cabin and instrument indicating system is mainly composed of a cabin simulation system and a cabin instrument system. The visual imaging display system is displayed on the display distributor and the cabin and instrument indicating system through a computer network and the flight resolving system in an imaging mode. According to the invention, flight simulation training of sliding, takeoff, turning, level flight, gliding, landing and takeoff and landing routes under four meteorological conditions can be simulated; the special effect flight simulation training such as circling, diving, jumping, sharp rising turning, rolling, sharp circling descending, sideslip, horizontal 8-shaped, weight giving, inclined weight giving and semi-rolling reversing can be implemented.