Psychoacoustic experiments on some unwanted interior car sounds

摘要

Unwanted components of car interior sounds include rattling, creaking, squeaking etc. which ideally should be inaudible. On the other hand, wanted sounds which convey information like the click of a switch should be audible also at typical driving speeds. Therefore, in psychoacoustic experiments the audibility of both unwanted and wanted sounds were studied in silence as well as in background noise typical for premium cars at driving speeds of 50 km/h or 120 km/h. In addition, 1/3-oct-band spectra were measured of all evaluated sounds in view of possible predictions of their audibility. The present pilot study features results of psychoacoustic studies on the audibility of unwanted and wanted interior car sounds and gives guidelines towards related algorithmic predictions. Approaches based on spectral displays like Zwicker's excitation pattern model or loudness patterns seem to be rather promising.