Immersiveness (MOS-I) represents perceived source width and virtual source position. The immersiveness analysis considers the following:
1. Delta in frequency response: The frequency response of the DUT is compared to a target frequency response derived from the auditory assessment. A quality value is calculated from the comparison.
2. Spectral flux indicates the reproduction of the signal‘s temporal structure. This is important for spatial perception of the audio signal.
3. Comparison of spectral content in the upper mid-range frequency band is most significant.
4. Binaural hearing model: Two variants of differences between correlograms. The model quantifies the spatial perception of a human listener.