874 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.

A sound system, for a user using a seat of an aircraft, an automobile, or the like, that reproduces sound inaudible to users around, without using earphones or headphones, is provided. A sound system for a user using a seat of an aircraft includes: a reproduction apparatus including an n-th reproduction unit (n=1, . . . , N) that outputs a (2n−1)-th sound signal that is a sound signal obtained based on a subject to be reproduced, and a 2n-th sound signal that is a sound signal with opposite phase to phase of the (2n−1)-th sound signal, N being an integer equal to or larger than one; and a speaker system including an n-th speaker unit pair (n=1, . . . , N) including a speaker unit that emits sound based on the (2n−1)-th sound signal (hereinafter, referred to as the positive speaker unit) and a speaker unit that emits sound based on the 2n-th sound signal (hereinafter, referred to as the negative speaker unit), the speaker system being installed at a place close to a head of the user using the seat.

The invention relates to the technical field of remote volume adjustment, in particular to a control system and method for stage intelligent sound control sound equipment, and aims to accurately capture time distribution and amplitude characteristics of volume fluctuation by collecting environmental noise data in real time and combining a dynamic data analysis method, predict a future volume trend based on historical data, and improve the sound control efficiency. According to the logic based on dynamic prediction, the response capacity to sound changes is enhanced in volume control, the Kriging interpolation method is adopted to accurately analyze sound field requirements, the requirements of different areas are matched by adjusting sound field parameters, the sound field uniformity and the coverage accuracy are improved, and the volume control accuracy is improved. Meanwhile, the intelligence and automation level of the sound system is improved, the output power and frequency distribution of the sound equipment are dynamically adjusted through the particle swarm optimization algorithm, the output volume can be continuously optimized according to the real-time environment and sound field requirements, and the individual requirements of different stage performances are met.

The utility model belongs to the technical field of loudspeakers, and discloses a vehicle-mounted loudspeaker and a vehicle-mounted audio system. It includes a rear shell, a fixed structure, a magnetic structure, a vibration structure and a front shell. Among them, the fixed structure includes a fixed basin frame and a support sheet, the fixed basin frame is detachably connected to the rear shell, and the support sheet is fixed on the fixed basin frame; the magnetic structure is embedded in the fixed basin frame, and a magnetic gap is arranged on the magnetic structure; the vibration structure includes a voice coil and a diaphragm, the voice coil is inserted on the support sheet, and the position is adjustable and inserted in the magnetic gap, and the diaphragm is designed to be integrally formed, which can meet the requirements of the sound pressure level and frequency width of the loudspeaker. The front shell is detachably connected to the fixed basin frame and is stacked on the diaphragm. A plurality of stepped sound guide holes are arranged at intervals along the circumference of the front shell, which can effectively compress and enhance the sound pressure level of the middle and high frequencies, so that the loudspeaker can meet the laws and regulations on high sound pressure levels of horn horns, and further meet the various needs of pedestrian warning sounds, horn horns, and vehicle external prompt sounds.

The invention discloses a high-speed non-coordinated concurrent access method for an underwater sound internet of things, which is used for realizing a time-varying channel resisting Doppler and strong multipath, and improving the throughput of a time-varying underwater sound system while solving conflicts. The method comprises the following steps: 1, distributing two ZC sequences with different root indexes to different users, wherein the ZC sequences are respectively used as an auxiliary sequence and a modulation sequence; 2, a sliding correlator is adopted to carry out cross-correlation operation on received baseband signals, and a lead code is composed of three repeated ZC base sequences; when continuous equidistant signals exceeding a threshold value are detected, the potential peak and the corresponding root index are reserved, the earliest peak is determined as the initial position of a lead code, and then the data demodulation initial positions of different users are determined according to the length of the lead code; and 3, obtaining a template signal based on auxiliary sequence demodulation, obtaining a to-be-demodulated signal based on modulation sequence demodulation, introducing a Pearson correlation coefficient of adaptive weight to calculate a correlation coefficient of the template signal and the to-be-demodulated signal, and demodulating specified user data from superposed data symbols.

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 the technical field of cinema layout optimization, and discloses a layout optimization method and system for a wireless home cinema. The method comprises the following steps: scanning an indoor space by adopting an environment sensor to obtain space parameter data; spatial acoustic characteristic data are obtained through sound field simulation calculation; determining an optimal listening area of the panoramic sound system, calculating a theoretical layout position set, and distributing a 5.8 G wireless transmission channel for each sound channel loudspeaker; executing a wireless channel quality test, and screening out a qualified layout position set through a transmission performance evaluation function; inputting a sound field optimization model, and calculating an optimal layout coordinate of each sound channel loudspeaker; after sound channel loudspeakers are installed at the positions of the optimal layout coordinates, real-time acoustic signals are collected, time domain and frequency domain compensation is carried out on all sound channels through a staged signal processing algorithm, dynamic calibration of the panoramic sound system is completed, layout optimization of the wireless home theater is achieved, and self-adaptive calibration of the panoramic sound system is achieved.

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.

According to the sound system control method provided by the invention, the environmental acoustic characteristic parameters and the positions of the plurality of sound devices are detected, whether the recommended placement positions generated according to the environmental acoustic characteristic parameters are met is judged, and if not, the position adjustment information is output; a user can adjust the position of the sound equipment according to the position adjustment information so as to obtain a better sound effect, and the user can enjoy high-quality audio experience without professional acoustic knowledge; if the user does not perform position adjustment or the position adjustment does not meet the requirement, the sound system generates a second audio processing algorithm according to the real-time position of the sound equipment, so that the audio experience is ensured as far as possible. By adopting the method, the user obtains a large option, the product use experience is improved, and if the sound effect is poor in the subsequent product use process, the user can autonomously call out the position adjustment information and adjust the position of the sound equipment according to the position adjustment information.

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.

The invention discloses a car door collision reminding system and method based on fisheye camera image distortion correction, and relates to the technical field of car safety reminding. According to the system, scene images on the two sides of a car in the parking state are collected in real time through a fisheye camera, image calibration and distortion correction are carried out through an improved Harris corner detection algorithm, and the car door collision reminding system is obtained. In combination with a multi-task learning model of a convolutional neural network, the potential collision risk in the vehicle door opening process is analyzed in real time, the distance and height between an obstacle and a vehicle door are calculated through a signal processing module, a reminding module generates reminding signals of different grades, and the reminding signals are fed back to a driver in time through a vehicle display screen and a sound system. And the image display module marks the dangerous area and the dangerous level on the display equipment in real time. The system has wider visual angle coverage, higher detection precision and stronger environmental adaptability, effectively avoids the occurrence of vehicle door collision accidents, and is particularly suitable for narrow parking spaces, complex urban environments and high-density people flow areas.

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 provides a sound production system, a control method and a vehicle, which can be applied to the field of intelligent cabins. The sound production system comprises N terminal units, each terminal unit in the N terminal units comprises a communication module and a sound production device, and N is a positive integer; and M preset interfaces, each preset interface in the M preset interfaces comprises a power supply interface and / or a communication interface, the power supply interface is used for supplying power to the terminal unit, the communication interface is used for sending signaling and / or data to the terminal unit through the communication module, and M is a positive integer and is greater than or equal to N. The embodiment of the invention can be applied to an intelligent automobile or an electric automobile, the design flexibility of the sound production system can be improved, the sound production system can be conveniently transformed by a user, and the use experience of the user can be 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 utility model discloses a portable sound box and a vehicle with the same, the portable sound box is provided with an installation part used for being detachably connected with a vehicle body, the portable sound box is provided with an insertion part, the portable sound box is configured to be suitable for being electrically connected with the vehicle through the insertion part, the portable sound equipment forms a part of the vehicle-mounted sound equipment when being connected with the vehicle, and the portable sound equipment is independent sound equipment when being separated from the vehicle. According to the portable sound box provided by the utility model, the portable sound box and a vehicle can be conveniently and efficiently installed, fixed and separated through the installation part and the insertion part, and the insertion part can enable the portable sound box and a sound box system of the vehicle to be fused or the portable sound box is more convenient to use as an independent sound box.

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 discloses a push-out device, a vehicle-mounted actuating assembly, a vehicle-mounted sound system and a vehicle, relates to the technical field of vehicles, and aims to solve the problem that a sound box is inconvenient to take out from a storage groove. The push-out device comprises a supporting piece and a driving assembly. The supporting piece is used for placing a sound box body of the vehicle-mounted sound box assembly. And the sound equipment body can be driven to move. The driving assembly is used for driving the supporting piece to move.

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.

The invention discloses an underwater sonar periscopic system and discloses an underwater sonar detection method applied to the underwater sonar periscopic system, and the underwater sonar periscopic system comprises an acousto-optic integration module, a fixed telescopic rod, a power supply communication control unit and an acquisition and calculation unit. Wherein the acousto-optic integrated module is used for collecting sonar image and optical image information and orientation and attitude information of the acousto-optic integrated module; one end of the fixed telescopic rod is connected with the acousto-optic integrated module structure; the power supply communication control unit is electrically connected with the acousto-optic integration module; and the acquisition and calculation unit is electrically connected with the power supply communication control unit and is used for generating a tube well connection information plane overview according to the sonar image information and displaying optical image information. On the basis of the pipeline periscope, the underwater image sonar function is combined, and the conditions of pipeline structure characteristics above and below the water surface in a pipe well, branch pipe connection and the like can be found out at the same time.

The invention discloses an intelligent frequency division multi-scene sound effect management and control combined sound system and method, the system comprises an input module, a loudspeaker unit, an audio signal processing module and a control module, the loudspeaker module comprises at least one super-high pitch audio unit, a high pitch audio unit, a mid-high pitch audio unit and a mega bass audio unit; the audio signal processing module is electrically connected with the input module and the loudspeaker unit, is used for processing an input audio signal and sending the audio signal to the loudspeaker unit, and comprises a frequency division module, a sound effect module and a power amplification module; and the control module is used for presetting and selecting a frequency division strategy, sound effect processing parameters and a power amplification channel of the audio signal according to different scenes so as to play the audio signal received by the system. The intelligent frequency division multi-scene sound effect management and control combined audio system has the advantages of standardization and audio and video integration.

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.

A method for automatically controlling an in-cabin environment for a passenger in an autonomous vehicle includes monitoring a state of the passenger via a video sensor; determining whether the state of the passenger corresponds to one of preset states of a predetermined number; and adjusting, when the state corresponds to the one of the preset states, any one or any combination of any two or more of a seat, an air conditioning system, a lighting system, a sound system, a variable window tinting, and a variable sunroof of the autonomous vehicle based on the state. The determining of the state of the passenger includes detecting a plurality of determination target objects from a video of the video sensor, cropping an image of each of the plurality of determination target objects, and determining whether the state of the passenger corresponds to the one of the preset states.