Project Overview
This automotive R&D center in the Stuttgart region operates multiple powertrain test cells and vehicle dynamics test benches. Noise from test rigs and dynamometers exceeded DIN workplace noise limits in adjacent engineering offices and control rooms. The facility also needed improved internal acoustics in test observation areas to support accurate technician monitoring. All solutions had to be compatible with heavy industrial use and regular equipment access.
Key Acoustic Challenges
- High-energy low-mid frequency noise from test rigs transmits through structure and air to adjacent office zones
- Test cell observation areas require controlled reverberation for clear auditory monitoring of equipment
- Acoustic components must withstand vibration, oil mist and regular industrial cleaning regimes
Solution Delivered
Test cell enclosure walls incorporated MLV sound insulation layers within structural panels to boost airborne sound isolation between test zones and office areas. Observation rooms and control room interiors were fitted with grooved perforated acoustic panels paired with mineral wool backing, calibrated via acoustic simulation to absorb dominant test-rig frequency bands and improve internal speech clarity. All panel surfaces received a durable industrial-grade coating resistant to oil and dust, supporting regular wipe-down cleaning.
Measurable Outcomes
- Control room and office noise levels reduced by 38%, meeting DIN workplace noise exposure standards
- Test observation area reverberation improved, allowing technicians to detect abnormal equipment sounds more reliably
- All acoustic components maintain stable performance after 12 months of continuous test facility operation
- The facility passed its annual occupational health audit with zero acoustic non-conformances
Industry Impact
The project validates that tuned resonant absorption combined with high-mass sound insulation can resolve complex industrial test facility noise issues without compromising equipment access or operational workflow.
