37 results about "Public broadcasting" patented technology

The present application relates to the technical field of public broadcasting and electroacoustic engineering, and discloses a loudspeaker voice coil low-temperature control method and system. Through the design of multiplexing voice coil and superimposed small direct current detection method, the loudspeaker voice coil is simultaneously used as a temperature sensor and a heating element. The temperature of the loudspeaker voice coil can be detected on-line, continuously and accurately through the small direct current detection method. The present application performs intelligent decision-making with strict priority based on temperature state and audio state. The closed-loop temperature control is started only during the standby period of public broadcasting non-broadcasting and when heating is explicitly required. Through the composite control architecture of feedforward pre-arrangement as the main part and feedback fine adjustment as the auxiliary part, the loudspeaker voice coil is smoothly and accurately heated to a safe temperature. Thus, while eliminating feedback lag, the inherent contradiction between the heating speed and temperature overshoot is effectively decoupled, the unification of rapid heating and accurate temperature control is realized, and the loudspeaker is ensured to be in a working state at any time.

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.

1. The name of the design product: network linear active sound column. 2. The use of the design product: for public broadcasting sound amplification system. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

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.

A repeater device having a donor radio antenna that captures publicly broadcast synchronization signals from an outdoor 5G Radio Access Network (RAN) node, and a controller that decodes the captured publicly broadcast synchronization signals from the outdoor 5G RAN node. The controller synchronizes with the decoded publicly broadcast synchronization signals, to align a frame structure of the donor radio antenna to a frame structure of the outdoor 5G RAN node, independent of additional signaling and explicit coordination from the outdoor 5G RAN node. The repeater device includes a relay radio antenna that communicates the synchronized publicly broadcast synchronization signals to a first set of indoor relay devices. The controller executes frequency or spatial isolation, to reduce interference between user equipment (UEs) of one or more indoor UEs associated with the outdoor 5G RAN node, independent of the explicit coordination from the outdoor 5G RAN node.

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.

The utility model discloses a multimedia playing device and a public broadcasting system, the device comprises a core board and a main board, the core board comprises a microprocessor unit, an audio coding and decoding unit, a switch chip, a network interface, an HDMI interface and a TF card seat; the microprocessor unit is connected with the network interface through the switch chip, and the microprocessor unit is also connected with the audio coding and decoding unit, the TF card seat and the HDMI interface; the mainboard comprises a USB interface, a loudspeaker interface, a microphone interface, an AUX IN interface and an AUX OUT interface. The USB interface is used for being externally connected with a USB flash disk, the loudspeaker interface is used for being externally connected with a loudspeaker, the microphone interface is used for being externally connected with a microphone, the AUX IN interface is used for being connected with external sound source equipment, and the AUX OUT interface is used for being connected with external sound amplification equipment. The multimedia playing equipment provided by the utility model can meet individual requirements of different users. The method can be widely applied to the technical field of playing equipment.

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.

1. The name of the design product: public broadcast power amplifier (ES-DA60W). 2. The use of the design product: public broadcast and background music play for public occasions. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

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.

An approach is provided for augmenting a broadcast stream while maintaining individual privacy. Transient user profiles of opted-in users within a proximity of a common broadcast device broadcasting a broadcast stream are collected. The transient user profiles are fed into a trained artificial intelligence model in communication with the one or more processors that outputs a recommended content tailored to a group of the opted-in users currently present in the proximity of the common broadcast device. The broadcast stream of the common broadcast device is augmented with the recommended content in response to the trained artificial intelligence model detecting a change to the group.

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.

The utility model discloses a broadcast telephone device and system, and the device comprises a housing, a key matrix, a receiver handle, a control module, a trigger module, a magnetic attraction switch module, an electrical isolation module, a sound collection module, and an audio module. The control module, the trigger module, the electrical isolation module and the POE network module are arranged in the shell; the surface of the shell is provided with a key matrix, a magnetic attraction switch module and a receiver handle; the electrical isolation module is connected to the control module, a first end of the electrical isolation module is connected to the key matrix, a second end of the electrical isolation module is connected to a first end of the sound acquisition module, and a second end of the sound acquisition module is connected to the receiver handle; and the trigger module, the magnetic switch module and the audio module are respectively connected to the control module. The equipment can effectively improve the anti-knock performance and the scene environment application range of public broadcast telephone equipment. The utility model relates to the technical field of public broadcasting.

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

A system and method including a plurality of device controllers, wherein each device controller is connectable to a network and is configured to integrate with a hardware device adapted to output an AV (audio and / or video) content item, and wherein each device controller includes a system for generating response data that chronologically relates a user input to the AV content item, including an interface associated with each device controller for receiving the user input collected from a user while the AV content item is being outputted. A computing system in communication with the plurality of device controllers including a process for grouping chronologically related response data received from a subset of device controllers, and a process for detecting an AV event, and in response to detecting the AV event, transmitting a detected event indicator to each of the plurality of device controllers is further disclosed.

Embodiments of the present application disclose a data detection method and device, a computer and a readable storage medium. The method comprises: obtaining to-be-detected account information, to-be-detected subject information and to-be-detected registration information of a to-be-detected public broadcast service group account; extracting to-be-detected account features of the to-be-detected account information and to-be-detected subject features of the to-be-detected subject information, and generating random registration features of the to-be-detected registration information; based on a first association relationship between the to-be-detected account information and the to-be-detected subject information and a second association relationship between the to-be-detected account information and the to-be-detected registration information, performing feature fusion on the to-be-detected subject features and the random registration features to obtain neighborhood association information; performing feature fusion on the to-be-detected account features and the neighborhood association information to obtain account fusion features, and performing prediction on the account fusion features to obtain an account detection result of the to-be-detected public broadcast service group account. The present application can improve the accuracy of data detection.

1. The name of the design product: network constant-voltage power amplifier. 2. The use of the design product: the design product is used in the field of public broadcasting system audio transmission, mainly applied to the audio transmission of public broadcasting system in schools, shopping malls, stations and other public places. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: assembly 2 perspective view.

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).