Project Overview

A national high-speed rail operator required a reliable and high-performance public audio system for train stations and passenger platforms. The system needed to ensure clear announcements, consistent sound coverage, and uninterrupted operation in demanding environments characterized by high noise levels, continuous vibration, and long operational hours.

Client Requirements

● Clear and intelligible voice broadcasting in noisy environments

● Stable operation under 24/7 continuous use conditions

● Compact, energy-efficient amplifier design for control rooms

● Compatibility with existing PA and emergency systems

● Long lifespan and minimal maintenance requirements

OMB Solution

OMB’s engineering team designed a customized Class D amplifier system integrated with a DSP-based public address control platform.
By utilizing OMB’s patented variable switching power supply technology, the amplifiers achieved a 35% improvement in heat dissipation and stable performance under fluctuating loads.

The installation included:

● OMB Class D Power Amplifiers with redundancy for uninterrupted operation

● OMB DSP Audio Processors for zone management and signal optimization

● Automatic fault detection and protection system to ensure safety and reliability

● Network-based monitoring software for real-time system diagnostics and control

The entire solution was tailored to meet the strict technical standards of high-speed rail systems, ensuring seamless integration with the client’s existing infrastructure.

Project Results

● Crystal-clear announcement quality across all platform areas

● 24/7 stable operation with zero overheating issues

● Energy consumption reduced by 28% compared to conventional amplifiers

● Ease of maintenance and monitoring through intelligent control software

● Enhanced passenger experience and improved communication efficiency

Client Feedback

“OMB’s system has proven extremely stable and reliable. Even in challenging acoustic environments, every announcement is clear and distortion-free. The maintenance team appreciates the monitoring tools that make system management effortless.”

Conclusion

This project demonstrates OMB’s capability to deliver industrial-grade, high-reliability audio systems for complex public environments.
By combining advanced Class D amplification, DSP processing, and intelligent power management, OMB provides transport and infrastructure operators with efficient, durable, and high-performance audio communication solutions.