Auralization of vehicle sound using a car audio system

Read the project report

A noise, vibration, and harshness (NVH) simulator has been widely used to understand the NVH issues related to vehicles under investigation. The tool provides the possibility of synthesize vehicle sound as a function of rpm and throttle position, and it inspects the contribution of individual noise sources and demonstrate vehicle sounds to non-experts, e.g. decision makers, who do not have deep understanding of the relevant NVH process. The most of NVH simulators are based on either binaural reproduction with headphones or a simple loudspeaker setup, which does not guarantee the same sound exposure as the real recorded sound field.

The goal of the project is to implement an auralization method using a car audio system. The method should allow listener’s head rotation while listening to auralized vehicle sound, and this will be achieved by reproducing the recorded sound field at a target positions, using multiple loudspeakers in a car audio system. The technique will make existing NVH simulators to reproduce the correct sound field with proper context during subjective evaluation. The outcome will be an algorithm and a procedure of recording and calibration that reproduces realistic vehicle sound inside a vehicle cabin.

Project participants:
Bang & Olufsen A/S
Brüel og Kjær Sound & Vibration Measurement A/S

For more information, contact Project Leader:
Associate Professor Flemming Christensen
Aalborg University, Department of Electronic Systems
fc@es.aau.dk