2. Road traffic noise
RMS: Root Mean Square.
ASEP: Additional sound emission provisions (vehicle testing over a wider range than the homologation cycle).
SMA: Stone mastic asphalt.
TPA: Transfer path analysis.
OTPA: Operational transfer path analysis.
CPX: Close ProXimity (near-field or continuous measurement).
SPB: Statistical Pass-By (VI).
2.1 Acoustics of road vehicles
Vehicle exterior noise is analyzed by automakers according to internal standards and procedures to identify the vehicle and comply with current regulations. There are many sources contributing to vehicle exterior noise (figure...
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Road traffic noise
Exterior noise test methods for vehicles and tires
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