Campus Distributed Broadcasting System Solution

I. System Overview

GENDE Campus Distributed Network Broadcasting System is specifically designed for primary and secondary schools, colleges, and other educational campuses. Leveraging an advanced distributed network architecture, it overcomes the deployment barriers and operational complexities of traditional campus broadcasting systems, delivering a hassle‑free experience with no server required, no IP configuration, and plug‑and‑play functionality via power and network connection. The system precisely covers all campus areas including classrooms, hallways, playgrounds, cafeterias, libraries, etc., addressing the full range of audio needs for daily teaching, event organization, information dissemination, and emergency response. It provides campuses with an efficient, stable, and easy‑to‑operate all‑in‑one broadcasting solution.

System Features:

● Distributed network architecture – eliminates the need for dedicated servers or special server rooms, simplifying core deployment.

● Automatic device discovery on the network – no IP setup required, truly plug‑and‑play, lowering technical barriers.

● Highest priority for emergency broadcasts with millisecond response – strengthens campus safety.

● Granular zone management – supports precise broadcasting to single or multiple zones, enabling differentiated control for teaching, events, and emergencies.

● Reuses existing campus surveillance and office networks – no additional cabling needed, significantly reducing deployment costs.

● Pure hardware button operation – intuitive and simple interface, requiring no professional technical training for staff to quickly get started.

II. Core Campus Scenario Requirements

(1) Teaching & Schedule Management

Intelligent, unattended management of campus schedules through timed broadcasts of class bells, eye exercises, break music, etc. Also supports instructional audio assistance in classrooms and function rooms to enhance teaching efficiency.

(2) Full‑Scenario Information Dissemination

Precise zone‑based push of campus announcements, event broadcasts, school presentations, lost‑and‑found notices, etc., balancing information delivery efficiency with instructional order while avoiding disruption of normal teaching activities by irrelevant information.

(3) Campus Event Organization

Adapts to the audio needs of various campus events such as recess exercises, sports meets, art performances, flag‑raising ceremonies, outdoor assemblies, etc. Supports mobile broadcasting and large‑area sound reinforcement to meet the flexible scheduling requirements of events.

(4) Emergency Safety Assurance

In emergencies such as fires, sudden incidents, or campus security threats, quickly triggers emergency broadcasts, accurately issues evacuation instructions and safety notices, guides teachers and students to evacuate in an orderly manner, and protects the safety of life and property on campus.

(5) Pain Points of Traditional Systems

Traditional campus broadcasting systems rely on dedicated servers and equipment rooms, involve complex cabling, and offer poor scalability. IP setup and software operation are cumbersome and highly dependent on technical personnel, making it difficult for teaching staff to operate independently. Training costs are high, fault diagnosis is difficult, and maintenance relies on vendor support. Overall investment is high, and such systems cannot adapt to the flexible teaching and event needs of a campus.

III. Core Value of the GENDE Solution

1. Rapid Deployment – Completely eliminates reliance on traditional servers and dedicated equipment rooms. No complex IP configuration or debugging. Ready to use as soon as power and network are connected, dramatically shortening the deployment cycle of the campus broadcasting system.

2. Easy Operation – Device and function design aligns with daily campus operational needs. Pure hardware operation requires no professional software. Teaching staff can independently perform all operations including broadcasting, playback, and scheduling, improving campus operational efficiency.

3. Flexible Expansion – The distributed network architecture supports free addition/removal of devices and zone adjustments. New campus areas or functional zones can be added with automatic device recognition, requiring no professional commissioning – adapting to campus development and layout changes.

4. Emergency Reliability – Emergency broadcasts are given the highest priority. Fire and safety signals trigger millisecond‑level response, automatically overriding routine audio. Enables precise zone‑based evacuation instructions to ensure campus safety.

5. Stable & Durable – A single point of failure does not affect overall system operation. Devices are designed for complex indoor and outdoor campus environments; outdoor units feature waterproof and dustproof protection. Overall system stability is significantly enhanced.

IV. Scenario Applications & Device Introduction

GENDE has customized three core audio devices for campus scenarios, respectively suited for indoor teaching areas, indoor public areas, and large outdoor spaces. These devices balance sound quality, functionality, and campus environmental adaptability, achieving “site‑specific” full‑coverage sound field deployment.

(1) Ceiling Speaker (XT‑720) – Applications

The ceiling speaker can be fully embedded into suspended ceilings, delivering “invisible” sound field coverage without disrupting the teaching environment of classrooms or function rooms. Sound spreads evenly from above with clear, soft audio quality. It is ideal for indoor teaching areas with moderate ceiling heights and regular suspended ceilings, while also meeting the hearing protection needs of young children and adolescents.

Coverage per unit: 60㎡ (standard classroom) – suitable for audio coverage needs of various classrooms, libraries, and meeting rooms.

Specific application scenarios:

● Classrooms / function rooms: Class bells, eye exercise broadcasts, instructional audio assistance, class announcements – soft sound quality that does not interfere with teaching.

● Libraries / reading rooms: Gentle background music, closing reminders, quiet‑zone prompts – creating a quiet learning environment.

● Offices: Work announcements, meeting sound reinforcement, emergency alerts – uniform sound field suitable for office needs.

● Nap rooms / dormitories: Schedule reminders, soothing music, emergency notices – low‑volume playback balancing rest and information delivery.

(2) Network Speaker (NC‑BG01) – Applications

Wall‑mounted design, compact and space‑saving. It can share the campus surveillance network without additional cabling, offering flexible installation and even sound distribution. Suitable for indoor public areas without suspended ceilings and with good wall‑mounting conditions. Supports independent zone control.

Coverage per unit: 50㎡; recommended installation spacing of 10 meters to achieve seamless audio coverage across an entire floor.

Specific application scenarios:

● Hallways / stairwells: Campus announcements, emergency evacuation broadcasts, safety alerts – ensuring clear information transmission.

● Cafeterias / dining halls: Dining background music, meal service prompts, hygiene notices, emergency broadcasts – suitable for high‑density areas.

● School building lobbies / entrance halls: Welcome messages, campus presentations, visitor notifications – tailored for public areas.

● Clinic / logistics rooms: Internal work notices, medical support calls, logistics coordination – precise delivery of work instructions.

(3) Network Column Speaker (NC‑YS60) – Applications

60W high‑power output, delivering strong sound pressure and long‑distance penetration. Features a rugged outdoor protective design that is waterproof, dustproof, and heat‑resistant. It can be directly connected to the existing outdoor surveillance network cabling on campus, eliminating the need for separate wiring. Ideal for large outdoor spaces and noisy campus environments.

Core performance: Audio penetration distance of 60 meters; single unit covers 200–250㎡ of outdoor area; four units meet the configuration requirements of a standard sports field.

Specific application scenarios:

● Playground / sports field: Recess exercise broadcasts, sports meet commentary, outdoor assemblies, flag‑raising ceremonies – loud and clear sound suitable for noisy environments.

● Outdoor campus plazas / play areas: Campus event announcements, safety warnings, emergency evacuation instructions – wide area coverage without dead zones.

● Campus pick‑up/drop‑off zones / school entrance: Arrival/dismissal reminders, parent notifications, security alerts – tailored for campus entry/exit areas.

● Campus perimeter paths / green belts: Safety warnings, area guidance, emergency broadcasts – rainproof and dustproof, adapting to complex outdoor conditions.   

V. System Core Functions

(1) Broadcast Announcement Function

Supports three flexible announcement modes to meet diverse needs for campus daily management, event organization and emergency command, enabling precise, efficient and flexible voice broadcast delivery for truly on-demand "speak anytime, anywhere".

● Network Microphone (Fixed Station):Suitable for broadcast rooms, principals’ offices, supporting precise zone-based announcements to achieve full coverage from the office. Can be used for campus-wide assembly notices, targeted paging for specific classes/areas, and scheduled routine management such as morning exercise alerts, nap reminders and outdoor activity gatherings.

● Wireless Microphone (Portable & Mobile):Handheld and freely movable for teaching and administrative staff, ideal for flexible on-site command in outdoor environments. Applicable to playground event organization, morning exercise formation, sports meeting hosting, safety inspection announcements and ad-hoc activity coordination.

● Walkie-Talkie Integration (Security & Logistics):Enables seamless connection between walkie-talkies and the broadcast system, supporting second-level emergency response and cross-regional instruction delivery. Used for campus security incident response, manual command during fire emergency evacuation, and logistics coordination (meal delivery, maintenance, medical support notifications).

Core Applications:Daily campus notifications, teaching scheduling, event organization, as well as evacuation command, security coordination and logistics support during emergencies.

(II) Background Music & Intelligent Playback Functions

A diverse and intelligent music and audio playback solution tailored to campus teaching, schedule management and event scenarios. It supports fully automatic unattended operation and flexible manual control, creating a warm and orderly campus environment.

● Automatic Timed Playback：Preset playlists and scheduled tasks via the MP3 player to realize unattended and regular schedule management. It can automatically play class bells, eye exercises, campus entry wake-up music, nap music, safety education nursery rhymes and promotional content, ensuring seamless transition between different periods.

● Instant Control via Mobile APP：Teachers and staff can instantly select and play music with one click through the mobile APP and wirelessly push it to any zone, enabling flexible background music for temporary activities. Applicable to interactive teaching accompaniment, real-time music for campus events, and independent music control for different campus zones.

● External Audio Source Input：Supports connection to external devices such as CD players for high-quality lossless music playback, meeting professional sound effect requirements for special campus occasions. Used for themed music during festivals (Children’s Day, school anniversary, New Year), special teaching audio (English nursery rhymes, classics recitation, art teaching), flag-raising ceremonies, parent-child activities and campus open days.

Core Advantages:

Fully automatic timed playback reduces labor input; flexible mobile control adapts to temporary needs; multiple audio source inputs satisfy diverse campus audio requirements.

(III) Fire and Emergency Broadcast Linkage Function

Seamlessly interfaces with the campus fire alarm system, prioritizing emergency broadcast safety. It achieves fully automatic, highly reliable emergency broadcast triggering and playback with no human intervention, ensuring campus safety at all times.

● Automatic Emergency Override – When a fire signal is triggered, the system immediately and automatically cuts off background music and daily broadcasts, switching silently to emergency mode with no delay or gap. Supports simultaneous output of manual command and alarm broadcasts. Emergency audio loops until the signal is cleared, preventing any missed information.

● Precise Identification of Multiple Signals – Compatible with short‑circuit signals from fire alarm systems as well as standard +5V/+12V/24V high/low level signals. Automatically identifies emergency signals without human intervention, achieving millisecond‑level rapid response.

● Zone‑Specific Evacuation Alerts – Supports multiple alarm modes, enabling a layered evacuation strategy: priority to the fire floor, assistance to the floors immediately above and below, and reassurance to safe zones. Precisely guides teachers and students to evacuate in an orderly manner, avoiding panic. Emergency broadcasts are given the highest priority, automatically overriding all routine audio content to ensure clear and accurate delivery of instructions.

VI. System Structure

(I) System Topology

The system adopts a distributed network architecture, using the campus's existing LAN/NET network (surveillance and office networks) as the transmission backbone. It connects core control devices and terminal playback devices without requiring a dedicated server or server room, enabling unified management and flexible control of all devices. The overall architecture is simple, with single points of failure not affecting the entire system, ensuring high system stability.

Core Components: Network microphone, wireless microphone, network zone controller, MP3 player, fire alarm terminal, ceiling speaker (XT‑720), network speaker (NC‑BG01), network sound column (NC‑YS60).

(II) Typical Zone Configuration Solution

● Broadcast Room (Core Control Zone) – Equipped with network microphone, wireless microphone, network zone controller, MP3 player, and fire alarm terminal. Serves as the core control node of the system, enabling global broadcast dispatching, scheduled task setting, and emergency linkage.

● Principal’s Office / Administrative Office – Equipped with a network microphone, supporting remote zone paging and all‑call broadcasting, allowing quick delivery of administrative instructions.

● Classrooms / Library / Offices – Primarily use ceiling speakers, combined with network zone controllers for independent zone control, adapting to the audio needs of teaching, study, and office environments.

● Corridors / Stairwells / Canteen – Deploy wall‑mount network speakers to achieve full‑coverage campus notifications and emergency broadcasts without dead zones, suitable for indoor public areas.

● Playground / Outdoor Plaza / School Gate – Equipped with network sound columns to meet the requirements for high sound pressure level, long‑distance broadcasting and music playback in large outdoor and noisy scenarios.

(III) Core Control Equipment Functions

● Network Microphone – Designed for fixed locations such as broadcast rooms and administrative offices. Supports zone paging and all‑call broadcasting. Pure hardware button operation, intuitive and simple.

●Wireless Microphone – Portable and mobile, supports free operation outdoors. Suitable for campus event organization, outdoor patrols, temporary dispatching, etc.

● Network Zone Controller – Core device for independent management of multiple campus zones. Supports audio collection, scheduled task setting, and zone on/off control, enabling refined zone management.

● MP3 Player – Built‑in playback function, supports preset scheduled tasks, achieving fully automatic unattended playback of background music and class bells.

● Fire Alarm Terminal – The core linkage node between the fire alarm system and the broadcast system. Automatically recognizes fire emergency signals, triggering emergency broadcast override and precise announcement functions.

VII. Conclusion

The GENDE campus distributed network broadcasting system, with its core philosophy of “simple, efficient, reliable, and cost‑saving,” precisely solves the five major pain points of traditional campus broadcasting systems: cumbersome deployment, complex operation, difficult maintenance, high cost, and poor scalability. Through an innovative distributed network architecture and configuration‑free design, it provides customized, one‑stop audio broadcasting solutions for various campuses, including primary/secondary schools and universities.

The system not only perfectly adapts to the daily operational needs of all campus scenarios—classrooms, corridors, playgrounds, canteens, libraries, etc.—enabling intelligent schedule management, teaching audio assistance, precise delivery of campus information, and flexible organization of various activities, but also plays a critical role in core safety assurance functions such as fire emergencies and campus security incidents. With millisecond‑level response and precise evacuation guidance, it builds a solid safety foundation for campus operations.

Its core features—no server, no IP configuration, plug‑and‑play—greatly reduce the deployment, operation, and maintenance costs of campus broadcasting systems. The flexible scalability brought by the distributed architecture adapts to campus expansion and zone function adjustments. The intuitive hardware‑based operation frees faculty and staff from technical dependencies, truly achieving autonomous and convenient campus broadcast management.

As smart campus construction continues to advance, the GENDE campus distributed network broadcasting system, with its outstanding performance, easy operation, and high cost‑effectiveness, becomes the ideal choice for new installations or upgrades of campus broadcasting systems. It helps campuses improve intelligent operation levels, optimize teaching and campus life experiences, and provide comprehensive safety protection.