Article

Effects of Misaligned Distance Calibration of Two-Channel Audio Playback Systems on the Perceived Overall Quality (en)

Authors

* Presenting author
Day / Time: 19.03.2024, 15:20-16:00
Room: Glasgang, Posterbereich E
Typ: Poster
Session: Bau- und Raumakustik (Posterbereich E)
Information: Die Poster werden durchgängig von Dienstag bis Donnerstag im Glasgang ausgestellt, sortiert nach thematischen Zusammenhängen in der hier angegebenen Posterinsel (siehe Sitzungstitel). Das Posterforum zur angegebenen Zeit bietet die Möglichkeit, mit den Autor*innen in Diskussion zu kommen.
Abstract: Calibration of loudspeakers in a listening environment is a recurring topic in professional and consumer applications. Even though the general benefit of room calibration is unquestioned, the impact of improper calibration on audio quality has not been quantified yet.This paper investigates to what extent audio quality is degraded when calibration position and actual listening position do not coincide in two-channel stereo setups. In a listening test, participants were placed at the sweet-spot and at a side-shifted position within a stereo setup. They were presented with different audio signals containing the gain and delay calibration settings of nearby positions and were asked to judge the overall audio quality.The perceived audio quality degraded not only with increasing distance between calibration and listening position but also varied with relative direction of the misalignment between calibrated and listener position and between the two tested listener positions.Items with a reduced inter-channel correlation led to smaller impairments of the perceived audio quality.Overall, excellent audio quality was achieved when the difference in time-of-arrival of the left and right loudspeaker signals at the listener position was smaller than 0.66ms.