Accelerometers, Preamplifiers, Microphones, Signal Conditioners, Sound Level Meters, and Accessories

NVH - Noise, Vibration & Harshness

NVH stands for Noise, Vibration, and Harshness and is an industry term associated with the treatment of vibration and audible sounds. Noise denotes unwanted sound; and hence the need to negate these sounds and vibrations. Vibrations above and below a specific range may not be detectable to the human ear, but may still require treatments for improved product performance and longevity. The frequency of the noise is paramount, as it dictates which method of treatment or what material will work best. Harshness usually refers to treatments of transient frequencies or shock. NVH refinement has become an essential vehicle development attribute, as it is directly related to legislative compliancy, product quality, driving pleasure, brand image, and most importantly customer satisfaction.

Advanced NVH test methods and analytical simulation tools are prerequisites in today’s fast paced automotive market to ensure front-end optimization of lowered levels of sound and vibration and enhanced design while still maintaining a balance with fuel efficiency, driveabilility, and system & component performance. PCB Piezotronics, Inc. offers a complete sensor and instrumentation solution for the measurement of NVH attributes from concept through to post production assessment. Due to shortened product development cycles, many automotive manufacturers and their suppliers are choosing to consolidate NVH testing with other development activities including: road load data acquisition, powertrain performance testing, and calibration development, to name a few. PCB® facilitates this trend with diverse sensor offerings in acceleration, acoustic, pressure, force, torque, load, and strain technologies allowing an efficient test and instrumentation strategy to capture performance and attribute measurements.

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