Blog Cases

Deutsche Bahn Frankfurt Central Station

Deutsche Bahn is the largest railway operator and infrastructure owner in Europe with nearly two billion passengers every year. Frankfurt Central Station exists as one of Germany’s largest transportation hubs. For the hub, communication is key but with large space, many reflecting surfaces, various noise sources and a vast amount of information that must be communicated, this environment is difficult to master acoustically.

Deutsche Bahn is the largest railway operator and infrastructure owner in Europe with nearly two billion passengers every year. Frankfurt Central Station exists as one of Germany’s largest transportation hubs. For the hub, communication is key but with large space, many reflecting surfaces, various noise sources and a vast amount of information that must be communicated, this environment is difficult to master acoustically.

Despite being the second most frequented train station in Germany, Frankfurt Central Train Station leaves room for improvement when it comes to customer satisfaction especially in terms of effective communication. The extremely challenging environment with large rooms, many reflecting surfaces, various noise sources proves to be difficult to master acoustically. With the current installation of conventional speakers, announcements are impossible to decipher with sound quality decreasing significantly by the meter.  

Given the demanding acoustic environments of this Deutsche Bahn train station, Holoplot’s task was to improve the existing situation. The goal was to reach a satisfactory level of speech intelligibility of at least >0.5 STI (Speech Transmission Index).

Challenges

  • Speech intelligibility rating of 47/100 creates ineffective communication
  • Wide open space with 250m in length and many reflection areas
  • Acoustic rating of 46/100

Results

  • Improvement in acoustic ratings from 46/100 to 86/100
  • Intelligibility ratings raised from 47/100 to 87/100  
  • Quantitative measurements of STI ranged from 0.98 at 18m to 0.61 at 180m
  • Savings of up to 40% of total investment costs
“Holoplot was able to demonstrate a significant and previously unattained improvement in acoustics at the live test in Frankfurt and thus represents a very exciting technology for Deutsche Bahn.”
Jan Schroeder, Manager Zunkunft Bahn, Deutsche Bahn AG

Thanks for your interest!