Method for determination of noise emissions of internal-combustion engine, involves detecting impact sound of internal-combustion engine with impact sound sensor

摘要

The method involves detecting the impact sound of the internal-combustion engine (10) with impact sound sensors (36a,36b,36c) and the energy of the impact sound signal in a certain frequency band is determined. The impact sound is filtered by a band pass filter. An independent claim is also included for computer program.