Objectionable noise, often referred to as “noise, vibration, and harshness” (NVH), is a central theme in product quality. The term encompasses unwanted sounds that a product produces during operation. In the case of an automobile, for example, these noises might include a rattling window, a clicking car seat motor, or the high pitch of a blower.

Such issues are more than simple distractions. They are quality killers and will detract from the driving experience and ultimately result in excessive warranty claims and recalls. And while some noise is inherent to vehicle operation, excessive or unpleasant sounds can lead to negative perceptions of a brand, influencing buyers’ decisions and overall satisfaction with their purchase. For this reason, OEMs are becoming increasingly quality conscious regarding their suppliers.

Objectionable Noise Testing

Manufacturers are increasingly focusing on reducing objectionable noise to enhance comfort and performance. This includes engineering efforts to minimize engine noise, road noise, and vibrations that can be transmitted into the cabin. For instance, the use of sound-damping materials in the vehicle’s structure and improvements in engine design can mitigate these unwanted sounds. As consumers expect quieter rides and more refined experiences, a vehicle that fails to meet these expectations may be seen as lower quality, even if its performance metrics are otherwise impressive.

Quality inspection systems, such as those offered by Signalysis, are at work testing literally millions of parts in manufacturing settings around the world. These test systems quickly identify parts that do not meet the quality standards, or specifications, of the customer. You can learn more read more about these automotive test systems here.

Enhancing Overall Quality

Ultimately, addressing objectionable noise is crucial for manufacturers aiming to deliver high-quality products. By prioritizing NVH considerations during design and production, automakers can enhance overall vehicle quality, leading to improved customer satisfaction and loyalty. As the industry evolves and competition intensifies, the ability to create a quiet, comfortable driving experience may become a defining characteristic that sets successful brands apart from the rest.