Noise can affect sleep for better or worse. White noise machines that emit consistent noise fall squarely in the “better” category. Constant white noise, has been shown to improve sleep quality ...

July 8, 2009 – The Society of Automotive Engineers (SAE) International has produced a simple, consistent and economical sound test standard that can be used to determine whether a street bike ...

Indoor pass-by testing not only helps vehicle OEMs comply with new noise limits but also optimizes and investigates their designs in a cost-effective manner. Worldwide road traffic noise is one of the ...

When specifying cooling equipment, engineers are faced with myriad decisions affecting performance and layout. One critical consideration is the noise emitted. As population density rises in major ...

For more than a decade, our audio experts have reviewed headphones of every shape and style. That extensive hands-on experience guides every recommendation in our list of the best headphones you can ...

From the January/February 2026 issue of Car and Driver. Sound is critical to the automotive experience. Sometimes we need lots of it, such as when we want to hear the sweet song produced by a V-12 ...

When you shop through retailer links on our site, we may earn affiliate commissions. 100% of the fees we collect are used to support our nonprofit mission. Learn more. Squeaks, hums, rattles, beeps, ...

In a nod to its storied past, Porsche‘s 928 noise test vehicle now sits proudly in the Porsche Museum. Dubbed a “dinosaur” by Harald Mann, a long-time test engineer, this unique vehicle has played a ...

Read the introduction to this series in Part 1, and the conclusion in Part 3, which covers stability. This is Part 2 of a three-part series which discusses how to properly test a DC/DC power supply to ...