We provided acoustic consultancy services to optimize PA systems. We conduct computer simulations and measurements on SPL contour maps and speech clarity.

Current active projects include:

- MTR LRL – Pilot Study on Extending On-Board PA for Exterior Broadcasting, 2010
- MTR LAR Line –PA system reinstallation, 2010- Current
- MTR ISL- Pilot study in-saloon PA system upgrade, 2009