Evolving tools and techniques in response to electrification and modern testing demands

In the dynamic world of automotive engineering, acoustic testing is rapidly evolving—especially with the shift toward electric vehicles (EVs). As noise sources change and test environments become more complex, the demand for precision, durability, and smarter tools is reshaping the field. In this two-part series, we explore the latest developments in automotive acoustic measurement technology.

Axiometrix Solutions provides cutting-edge test and measurement solutions through its globally respected brands, Audio Precision, GRAS Sound & Vibration, and imc Test & Measurement. Unified under the Axiometrix Solutions banner, they offer one-stop solutions for all automotive testing needs, helping manufacturers and engineers avoid the costs and complications arising from fragmented systems and vendor management.

Research shows that prolonged exposure to noise can negatively impact quality of life, contributing to stress, sleep disturbances, and decreased productivity. As a result, consumers are demanding quieter home environments, they expect high-performance products that maintain efficiency while minimizing background noise. This drives manufacturers to prioritize noise reduction in appliance design. However, meeting these expectations presents challenges for product development engineers, particularly as they balance noise control with other performance factors.

In-ear headphones are a daily essential for millions, but ensuring top-tier sound quality is more complex than it seems. Beyond frequency response, ear canal geometry significantly impacts how sound is measured and experienced. Insights from the GRAS Sound & Vibration whitepaper, The Impact of Ear Canal Geometry on In-Ear Headphone Testing, reveal how ear simulators and ear canal variations affect audio quality.

The increasing popularity and selection of electric vehicles (EVs) represent a huge shift towards sustainability and innovation in the automotive industry. This transition, however, introduces new challenges in vehicle design, particularly when it comes to in-cabin acoustics. As the hum of internal combustion engines fades away, the focus shifts towards minimizing other sources of noise, with wind noise emerging as a primary concern. This makes wind noise testing an increasingly important discipline, and sophisticated techniques like wind tunnel tests are moving from an expensive luxury to an expensive necessity – meaning engineers need to get their measurements right, and fast.