An engineer performing pass-by noise testing on a car passing through.


Pass-by noise engineering

Faster vehicle noise certification with innovate pass-by noise engineering.

Complete portfolio of hardware and software

In urban areas, traffic noise can be a prominent source of discomfort, affecting the daily lives of millions of people and potentially diminishing their health and well-being. To create a more harmonious living environment and reduce the risks of noise exposure, legislators are working on establishing acceptable emission levels and imposing limits on pass-by noise (PBN) levels. ISO certification standards are used to make sure vehicles comply with established legislation. This type of certification is required for all types of road vehicles, including trucks, buses, motorcycles, passenger cars and recreational vehicles.

For hybrid and electric vehicles, new standards are in place for measuring minimum noise emission. For these vehicles, an acoustic vehicle alert system (AVAS) adds exterior noise to ensure pedestrian safety. We offer a complete portfolio of modular hardware for reliable data acquisition combined with comprehensive pass-by noise engineering software. The combination of both results in enhanced accuracy and efficiency, but also delivers engineering insight well beyond the certification procedures as such, for instance by pinpointing root causes of dominant noise contributors.

Maximizing your testing efficiency with Simcenter SCADAS pass-by noise solutions

Case study


SAIC HONGYAN Automotive uses Simcenter Testlab to reduce pass-by noise by up to 3dB.

SCADAS hardware device.
Case Study

Improving noise, vibration and harshness performance to meet regulatory standards and improve competitiveness

Company:SAIC HONGYAN Automotive

Industry:Automotive & transportation

Location:Chongqing, China

Siemens Software:Simcenter 3D Solutions, Simcenter Amesim, Simcenter Testing Solutions, Teamcenter