Project

Prediction of diesel roughness through binaural transfer path synthesis

Key Info

Basic Information

Professorship:
TA und MEDAK
Donor:
Forschungsvereinigung Verbrennungskraftmaschinen e.V. (FVV)
Funding Program:
Forschungsvereinigung Verbrennungskraftmaschinen e.V. (FVV)
Status:
laufend
Research Area:
Maschinenakustik und Diagnose und Transpferpfadanalyse,
Psychoakustik,
Binauraltechnik

Contact

The goal of this project is the development of a new method to predict and evaluate vehicle interior diesel engine roughness based on test bench measurement data, whilst taking into account airborne and structure-borne sound. Binaural signals will be generated by means of binaural transfer path synthesis (BTPS), facilitating an investigation of individual transfer paths (airborne, structure-borne) at typical listening positions in the passenger cabin. For this purpose, representative transfer functions, allowing for reliable predictions of expected engine roughness early in the development process, will be determined for different vehicle categories. A further aim of the project is therefore the validation of prediction models of vehicle interior roughness caused by diesel engines through perceptual experiments. The effect of the reproduction method, used for auralization, on this psychoacoustic parameter is of particular interest and will be analyzed in dedicated listening experiments. A series of systematic auditory experiments will be conducted to determine subjective roughness impression. Results will subsequently be correlated with predictions of objective models, which are currently discussed by the DIN working group on roughness.