Assessment of Combustion Mechanical Noise Separation Techniques on a V8 Engine

Multi-domain evaluation of a latest-generation combustion engine: focusing on sound quality perception

“…The focus of this paper is to study the effect of the calibration levers on the perception of the combustion contribution, considering that these parameters primarily affect the combustion evolution. To separate the combustion and the mechanical contributions from the overall engine noise, the Wiener filtering technique has been applied [2,3]. In addition to the primary objective of breaking down the combustion from the mechanical noise, with this approach it is also possible to filter out the contributions coming from other acoustic sources in the testbed (testbed ventilation and conditioning unit, measurement systems, dynamometer, etc.).…”