Investigation of early reflections on the perception of audio

Abstract

The effects of early reflections in a nonsymmetrical control room were measured using time delay spectrometry and MLS methods. The tests revealed that comb-filtering patterns were the dominant source of spectral distortion. The mixing console reflections were investigated to reveal the subjective impact of the comb-filtering at the mix position. Tests were performed with and without acoustic foam on the console to determine the influence of the early reflections and then compared with theoretical values for the filtering patterns. Results were compared and used to qualify the subjective perception of the distortion.