Repeatable and comparable objective S&R testing using Adaptive Background Noise Compensation
MB has currently released a new algorithm for objective Squeak & Rattle testing with BSR SUITE. The algorithm is based on Time Varying Loudness according to DIN 45631/A1 and allows applying Adaptive Background Noise Compensation to audio measurements. Adaptive Background Noise Compensation removes stationary or slow changing environmental background noise like hum- or hiss-noise, room resonances and operating background noise radiated from the floor, fixture and test item. The influence of stationary background noise gets minimized while Squeak & Rattle noises can be detected more clearly. Differences in between test items with no BSR issues and noisy test items with overlaid Buzzes, Squeaks & Rattles become visible immediately.
By reducing the influence of environmental background noise, room acoustics and operating background noise the repeatability and comparability of objective Squeak & Rattle tests performed in different environments and on different test systems gets clearly improved. Adaptive Background Noise Compensation works with totally different excitation profiles (SINE-, RANDOM- or TIME HISTORY) without any adjustments to the algorithm. Objective Squeak & Rattle testing becomes repeatable, comparable, easy and save.
Features and analysis functions: