Preferred Conditions of Temporal and Spatial Factors of Sound Fields

Abstract

The four orthogonal factors of the sound field are (1) binaural listening level (LL) [dBA] (binaural and spatial factor), (2) delay time of the first reflection after the direct sound (Δt 1) [s] (monaural and temporal factor), (3) subsequent reverberation time after the first reflection (T sub) [s] (monaural and temporal factor), and (4) magnitude of the interaural crosscorrelation function (IACC ) (binaural and spatial factor). According to these four factors that represent the temporal and spatial characteristics of sound fields, scale values of subjective preferences for each of them obtained by the paired-comparison test (PCT) can be described. Section 6.2.1 described the association between the two monaural-temporal factors (Δt 1 and T sub) and the left hemisphere. The two binaural and spatial factors (LL and the IACC) are associated with the right hemisphere. Therefore, temporal and spatial factors work independently of one another to produce subjective preference responses in respective brain hemispheres (Ando Y, Auditory and visual sensations. Springer, New York, 2009).