25 results about "Public broadcasting" patented technology

The invention relates to the technical field of wireless communication, and particularly discloses a zero-handshake transient connection establishment method and system based on an Auracast protocol, and the method comprises the steps: generating a composite signal containing a user space position vector and a one-time authorization token, generating a motion feature tag based on the position change, and activating directional scanning only when an approaching or staying intention is detected; a connection environment quality report is generated through multi-channel detection, and the channel congestion degree, the transmission delay and the signal strength are dynamically evaluated; meanwhile, according to the environment quality, a customized connection scheme is generated, an optimal channel and transmission parameters are automatically selected, and after an audio stream receiving service is established, through continuous monitoring of user position changes, instant disconnection is triggered when a departure intention is detected, and full-process automatic connection life cycle management is formed. The problem that the connection process in the public broadcast audio service field is lack of intelligence is effectively solved, automation of connection initiation is realized, and the connection efficiency and the user experience are remarkably improved.

The application provides a service demand-based beam position level skip beam pattern design method, device and equipment, and belongs to the technical field of wireless communication. The method comprises the following steps: the skip beam pattern is used for indicating the beam scanning sequence of the beam position in the non-ground network coverage range, the beam scanning sequence of each beam position is configured according to the priority of each beam position, and the priority is associated with the service traffic of each beam position, the number of ground base stations associated with each beam position and / or the number of users of each beam position; and / or the skip beam pattern is used for indicating the information broadcast timing in the public broadcast information, the first system information block (SIB) is included in the public broadcast information, the service cell basic information and the satellite auxiliary information are included in the first SIB, and the first SIB is periodically broadcast. The service scheduling efficiency can be improved.

The utility model relates to the field of electronic information discloses a public broadcasting device convenient to installation, including bottom plate and public broadcasting body, both sides of bottom plate all are fixedly connected with shell, the one side of two shell bottom is equipped with two strip grooves, the top of two shell inner wall is inserted with the plug -in block, two plug -in blocks are fixedly connected respectively in the both sides of public broadcasting body bottom, the inner wall of plug -in block is equipped with the slot, both sides of shell inner wall bottom all are connected with the clamping piece of sliding, the middle part of shell inner wall bottom is fixedly connected with fixed block, both sides of fixed block all are fixedly connected with spring no.

This invention belongs to the technical field of audio processing and relates to a multi-channel speaker system and method based on Bluetooth Auracast and spatial awareness. It includes the following modules: an audio broadcast source transmission module for transmitting a public broadcast audio stream; a public broadcast stream synchronization locking module for generating a unified physical layer time reference; an ordered acoustic detection signal transmission module for forming an acoustic detection signal sequence; a raw sound wave arrival time difference generation module for generating the raw sound wave arrival time difference; a global measurement dataset construction module for summarizing the global measurement dataset of measurement results; a topology weight analysis and calculation module for generating topology weight values; a channel role election locking module for generating channel playback instructions; and a multi-channel synchronous playback execution module for extracting channel data and performing synchronized playback. This invention solves the problem that when a user moves the speaker position or adds a new speaker device during playback, a complete recalibration process needs to be performed.

1. The name of the design product: intelligent broadcast server host (MTX1-ES). 2. The use of the design product: used for providing resource storage, audio signal distribution, partition control, responsible for program library management, task management, terminal management, recording management, user management, permission management, various task management schemes and other remote services for public broadcasting system, fire emergency broadcasting. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

1. The name of the design product: high-pitched horn (inclined type). 2. The use of the design product: It is an acoustic component, mainly to enhance the directivity of sound, improve the sound pressure level (loudness) and optimize the efficiency of sound wave propagation, widely used in professional sound (stage, cinema), public broadcasting, outdoor sound amplification and other scenes. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

This invention provides a sound amplification evaluation system, evaluation information input device, evaluation information display device, evaluation information analysis device, and sound amplification evaluation method that can understand the listening conditions of various listeners of amplified sound regardless of scale, and that can easily evaluate amplified sound. [Solution] The loudspeaker sound evaluation system of the embodiment has an evaluation information input device 100 and an evaluation information display device 200 that are connected in a manner that enables information communication. The evaluation information input device 100 has a participant information input unit 103 that inputs information of participants P who participate in the evaluation of loudspeaker sound from loudspeaker L, and an evaluation input unit 104 in which participants P who have listened to the loudspeaker sound input evaluation information indicating the level of a preset index regarding their own listening condition. The evaluation information display device 200 has an evaluation display unit 205 that selectively displays evaluation information corresponding to loudspeaker L according to the participant information of a plurality of participants P.

This utility model relates to the field of pole attachment devices, and more particularly to a pole attachment device for automatically adjusting the direction of a speaker column installation. It includes an annular clamp, a connecting shaft, a speaker column mounting frame, and a drive unit. The annular clamp is a ring-shaped structure fitted onto the pole. The speaker column mounting frame is mounted on the speaker column. One end of the connecting shaft is movably connected to the annular clamp via the drive unit, and the other end is fixedly connected to the speaker column mounting frame. This utility model is particularly suitable for public address systems requiring dynamic adjustment of sound field coverage, as well as flood control and flood warning systems and smart construction site management scenarios. It provides a remotely controllable, automatically adjustable speaker column installation device to improve installation flexibility and management efficiency. It features structural stability, precise orientation, remote control, and strong compatibility. This utility model solves the technical problems of existing fixed speaker columns that cannot be dynamically adjusted after installation, resulting in low efficiency and poor safety of manual adjustment.

We provide the system. [Solution] A data processing means that receives video information from a monitoring system and analyzes the video information to detect abnormal behavior, Information generation means that generates a warning message based on abnormal behavior detected by the data processing means, A signal output means for outputting the warning message, Information communication means for notifying a management information terminal of the results of detecting the abnormal behavior, A sound generation means that generates an audio signal using the warning message and outputs it to a public address system in real time, A system that includes this.

1. Name of the product in this design: IP microphone. 2. Application of this design: The IP microphone is a multi-mode broadcast control device for intelligent emergency broadcasting systems, used in scenarios such as public broadcasting, security communication, enterprise collaboration, and specific industry dispatching. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The application provides a kind of loudspeaker online monitoring system and public broadcast system, the system includes: host computer, detection control device, power amplifier, and the detection terminal of matching setting with loudspeaker;The first end of detection control device is connected with the input end of power amplifier;The second end of detection control device and the output end of power amplifier are connected with the input end of each detection terminal;Detection control device is used to mix audio signal with ultrasonic signal, and sends mixed signal to power amplifier;Power amplifier is used to amplify the mixed signal received, and sends mixed amplified signal to each detection terminal;Detection terminal is used to sample power amplifier circuit and loudspeaker loop, when power amplifier circuit sampling voltage and loudspeaker loop sampling current include ultrasonic data and ultrasonic data is within the preset voltage range, it is determined that power amplifier circuit and loudspeaker loop work normally;The application can realize one-to-one detection of loudspeaker while improving the detection accuracy of loudspeaker working state.

1. Name of the designed product: Household sound (resound through the clouds). 2. Use of the designed product: The designed product is used for home theater, music playing, public broadcasting, conference system, etc. 3. Design points of the designed product: Combination of shape and pattern. 4. Picture or photo that best indicates the design points: perspective view.

According to an embodiment of the present disclosure, an electronic device (101, 102, 104, or 200) comprises: communication circuitry (190, 302, or 420); one or more processors (120, 304, and 410) including processing circuitry; and a memory (130, 306, or 490) for storing instructions. The instructions, when executed individually or collectively by the one or more processors, cause the electronic device to: receive a periodic advertising (PA) packet from an external electronic device (210) by using the communication circuitry; perform, using the communication circuitry, a synchronization operation for a common broadcast isochronous stream (BIS) channel broadcast by the external electronic device, on the basis of broadcast isochronous group (BIG)-related information included in the PA packet; receive, using the communication circuitry, a first number of audio packets and a second number of PA packets from the external electronic device through the common BIS channel during a configured period; obtain a broadcast code applied to a BIS channel other than the common BIS channel, on the basis of the first number of audio packets or the second number of PA packets; perform, using the communication circuitry, a synchronization operation for the other BIS channel broadcast by the external electronic device, on the basis of BIG-related information included in at least one of the second number of PA packets; receive audio packets through the other BIS channel by using the communication circuitry; obtain audio data by decoding, using the broadcast code, the audio packets received through the other BIS channel; and provide the obtained audio data. Other embodiments may be possible.

A hybrid in-person and remote audiovisual conference broadcasting system provides a centrally controlled system for managing and broadcasting the audiovisual data collected from mobile devices both in humanly perceptible proximity of an in-person public-address system and beyond humanly perceptible proximity to the in-person public-address system. In an exemplary embodiment, a moderator controls requests from various participant members to broadcast audio or video from their personal mobile device to the other group members. Some members may be in proximity to an in-person public address system where they may for example be able to hear amplified audio and see live projected or otherwise presented video. In this exemplary embodiment, remote users not in proximity to the in-person public address system may also participate by for example listening to and viewing the broadcast audiovisual data on their personal mobile devices. Both in-person / local users and remote users may request to be selected for broadcasting to all users.

This utility model relates to the field of public address technology, specifically to an ultra-thin digital flat panel loudspeaker device for optical network visual linkage broadcasting. It includes an optical network interface, a frame assembly, a surface sound source system, a signal processing module, a visual recognition component, and a cluster collaboration component. The frame assembly includes a surrounding frame integrating the optical network interface, a metal base plate, an insulating base plate, and sound-permeable metal mesh panels on both the front and back. By relying on the ring network cascading function of the network switch module to form serial broadcast terminal nodes, and combining this with the volume differentiation control of the digital power amplifier module to form directional guidance, it effectively improves the efficiency of emergency broadcasting and evacuation during disasters. Furthermore, by relying on optical cables to construct a ring network dual-link redundant network architecture, it forms a fully optical network broadcasting system, solving the problem of low connection reliability that easily occurs when traditional network cables are connected to loudspeakers, and avoiding the technical drawbacks of traditional network cables such as network interruptions caused by electromagnetic interference and high data transmission error rates, ensuring stable transmission of broadcast signals in complex environments.

The application relates to the fields of intelligent traffic and public broadcasting, and specifically discloses a standardized volume control strategy generation method and system, which comprises the following steps: obtaining three-dimensional space constraint information and safety early warning event information of a target sound column; calculating space compliance sound power based on the information, and generating a fusion reference acoustic target by combining early warning scenes and point information; mapping the target into a differentiated gain parameter set of a sound column capable of forming a directional sound field; finally, dynamically weighting the parameter set based on the event emergency level and time period identifier, generating and issuing a space-time event joint optimization strategy; the system comprises four functionally corresponding modules. Through intelligent fusion of digital map environment analysis, physical sound field modeling and multi-source business rules, the application realizes the leap of volume control from simple gain adjustment to three-dimensional sound field adaptation and space-time dynamic optimization, effectively solving the core problems of accurate coverage, noise disturbance and automatic execution of standardized standards.

The application relates to the technical field of wireless communication, and particularly discloses a zero-handshake transient connection method and system based on an Auracast protocol, which comprises generating a composite signal containing a user space position vector and a one-time authorization token, generating a motion characteristic label based on position changes, activating directional scanning only when approaching or staying intention is detected, generating a connection environment quality report through multi-channel detection, dynamically evaluating channel congestion, transmission delay and signal strength, generating a customized connection scheme according to the environment quality, automatically selecting the optimal channel and transmission parameters, and after an audio stream receiving service is established, continuously monitoring the user position changes, triggering transient disconnection when leaving intention is detected, and forming a full-process automated connection life cycle management. The application effectively solves the problem of lack of intelligentization in the connection process in the field of public broadcast audio services, realizes the automation of connection initiation, and significantly improves the connection efficiency and user experience.

To provide a broadcast wireless system capable of correctly transmitting audio to a resident, and a public-address slave station and a signal processing device for the broadcast wireless system.SOLUTION: A broadcast wireless system according to an embodiment of the present invention comprises a master station facility, and at least one public-address slave station installed outdoors, and broadcasts loudspeaker information including an audio signal distributed from the master station facility to the public-address slave station from the public-address slave station. The master station facility has a transmission unit for transmitting the audio signal and environmental information including data related to at least one of a temperature, a humidity, and a weather of a location where the master station facility or the public-address slave station is installed to the public-address slave station. The public-address slave station has: a receiver for receiving the audio signal and the environmental information; a loudspeaker for reproducing the audio signal; and a signal processing device for correcting the audio signal based on the environmental information so that an evaluation index relating to clarity of the audio reproduced by the loudspeaker becomes a predetermined reference value.SELECTED DRAWING: Figure 1

The application belongs to the technical field of intelligent community management, and particularly relates to an intelligent community management system and a control method of the intelligent community management system. The application comprises a comprehensive control center, a comprehensive security management subsystem, a traffic management subsystem, a device management subsystem, an energy management subsystem, an environment management subsystem, a public broadcasting subsystem, an information publishing subsystem and intelligent equipment. The comprehensive control center, the intelligent equipment and the various subsystems are communicatively connected through the Internet of Things. The comprehensive security management subsystem comprises a comprehensive security management control center, a video monitoring subsystem and a high-altitude object throwing prevention and control subsystem. The video monitoring subsystem is used for collecting video images of public areas of the intelligent community and analyzing and processing the collected video images. The application can improve community management efficiency and timely discover security events in the community.

A Class-D amplifier is disclosed, comprising: a switching circuit that generates a switched DC voltage by performing switching between a first DC voltage and a second DC voltage (the first DC voltage and the second DC voltage are applied to the Class-D amplifier through a first voltage terminal and a second voltage terminal, respectively, wherein the DC level of the first DC voltage is higher than the DC level of the second DC voltage); a low-pass filter circuit (including an inductor); a first additional switching circuit coupled between the switching circuit and the inductor; a second additional switching circuit coupled between the inductor and an output terminal for outputting a speaker drive signal from the Class-D amplifier; an amplifier controller that controls the Class-D amplifier to operate in an idle state based on the absence of an input audio signal to the Class-D amplifier (control includes keeping the first additional switching circuit and the second additional switching circuit off during the idle state); and an idle state conduction forming two different circuit paths leading from the second voltage terminal through the inductor to the first voltage terminal, each in a different direction between the two terminals of the inductor. It includes a circuit (in which, during operation of the Class-D amplifier in the idle state, one of two different circuit paths provides conduction from the second voltage terminal through the inductor to the first voltage terminal).

The invention belongs to the technical field of audio processing, and relates to a multi-channel sound box system and method based on Bluetooth Auracast and spatial awareness, and the system comprises the following modules: an audio broadcast source transmitting module which transmits a public broadcast audio stream to the outside; the public broadcast stream synchronous locking module is used for generating a unified physical layer time reference; an acoustic detection signal transmitting module is ordered to form an acoustic detection signal sequence; the original sound wave time difference of arrival generation module is used for generating original sound wave time difference of arrival; the global measurement data set construction module is used for summarizing a global measurement data set of measurement results; the topological weight analysis and calculation module is used for generating a topological weight value; the sound channel role election locking module is used for generating a sound channel playing instruction; and the multichannel synchronous playing execution module is used for extracting the sound channel data and synchronously playing the sound channel data. According to the invention, the problem that a complete calibration process needs to be executed again when a user moves the position of the sound box or adds new sound box equipment in the playing process is solved.

Disclosed is a digital audio signal switcher comprising: an input multiplexer for receiving a first digital audio signal and a second digital audio signal; an output multiplexer for outputting an output digital audio signal; and a finite state machine (FSM)-based fade circuit unit, for, in response to an audio selection signal indicating switching between the first digital audio signal and the second digital audio signal, generating a faded-out digital audio signal and causing the output multiplexer to output the faded-out digital audio signal as the output digital audio signal, and subsequently, after clock switching, generating a faded-in digital audio signal and causing the output multiplexer to output the faded-in digital audio signal as the output digital audio signal.

The utility model discloses sound equipment for public broadcasting, which comprises a mounting rod and a sound main body, a mounting seat is fixedly mounted on the outer wall of the mounting rod, a mounting groove is formed in the inner wall of the upper end of the mounting seat, and a mounting mechanism for mounting the sound main body is arranged on the outer wall of the mounting rod. The utility model relates to the technical field of public broadcasting, in particular to a novel sound box, which comprises a sound box main body, a mounting groove is formed in the upper side of the sound box main body, a rotating mechanism used for adjusting the position of the sound box main body is arranged on the inner wall of the mounting groove, and the rotating mechanism comprises a bottom plate, a top plate and a driving assembly. According to the utility model, the broadcasting direction of the sound equipment main body can be adjusted conveniently, the use value is higher, and the economic benefit is better.

The utility model relates to the technical field of broadcasting equipment, and discloses public broadcasting equipment for weak current engineering, which comprises a mounting frame mounted on a mounting rod, broadcasting equipment is mounted in the mounting frame, a through groove is formed in the lower end of the mounting frame, a limiting pressing plate is slidably connected to one side of the through groove, and a moving pipe is fixedly connected to one side of the limiting pressing plate. One side of the moving pipe is in threaded connection with a lead screw, one side of the lead screw is fixedly connected with a gear, one side of the gear is rotationally connected with the inner side wall of the lower end of the mounting frame, and through the structures such as a limiting pressing plate, the moving pipe and the lead screw arranged at the through groove in the lower end of the mounting frame, when the broadcast equipment is placed on the mounting frame for use, the limiting pressing plate is used for limiting and protecting a connecting wire; according to the broadcast equipment, the connecting wire is fixed after being connected with the lower end distribution box, the situation that connection is disconnected due to continuous shaking in the using process is avoided, the broadcast equipment can be continuously used outdoors, and the broadcast equipment can be protected to a certain degree through the protection net frame on the protection rod.

The invention discloses a multi-gear audio attenuation and selection cooperative control system, and relates to the technical field of public broadcast systems, and the system comprises a wireless microphone receiving module which receives a UHF frequency band signal, and outputs an audio frequency after processing, adjusting and filtering; the FM radio module receives broadcast signals through the special telescopic antenna; the multimedia playing module obtains audio through a USB or Bluetooth; the audio selection module responds to the instruction to switch an audio channel, eliminate sonic boom and realize non-attenuation transmission; the evading control module detects microphone signals and triggers multimedia audio attenuation and gradient recovery; the audio amplification module amplifies the signal and ensures low distortion and high signal-to-noise ratio; the man-machine interaction module inputs instructions through keys, and the LCD displays information in real time; the power supply management module provides stable DC voltage, inhibits interference and monitors the voltage state. The anti-interference capability and the audio definition of the wireless microphone are improved, the emergency response is fast, various public broadcast scenes are adapted, and the use experience and the operation stability are improved.