240 / 2021-04-14 13:08:43

A database for active control of automobile engine noise

active noise control,engine noise

Special Sessions > Applications of active control

The investigation of active control of automobile engine noise was started nearly 40 years ago, and mature commercial Active Noise Control (ANC) systems were released around year 2000. The harmonic noise components related to the engine combustion process can be reduced significantly when the engine speed keeps constant; however, the noise reduction performance degrades when the engine speed varies quickly. In this paper, the investigation history about the active control of automobile engine noise is briefly reviewed, and a database consisting of recorded signals from a typical car with a 4-cylinder engine is presented for researchers to test or develop different active control algorithms for automobile engine noise. The database contains the primary noise at 4 microphones and the engine speed signal under 4 different driving conditions (Idle state of 60 seconds, Constant engine speed at 4000 rpm of 60 seconds, Whole open throttle of 10 seconds, and Partly open throttle of 10 seconds). Besides, the modeling signals fed to the 4 door loudspeakers and the sound pressure signal at the 4 microphones are also included for the secondary path modelling.