5.23 interaural phase. Phase (or time) difference between the signal and noise, or noise alone, parameter presented at one ear and the signal and noise, or noise alone, parameter presented at the other ear. Phase is usually referenced to one ear. Unit, radian.
Annotation 1 Typical signal (S) and noise (N) configurations are listed as follows:
NπSm: (mixed, dichotic) – signal to one ear; noise presented π radians (180°) out-of-phase (noise is reversed in phase at one ear relative to the other ear).
NπSπ: (homophasic, dichotic) – signal and noise presented π radians out-of-phase (e.g., wires to one earphone reversed).
Annotation 2 The two ears are assumed identical and the ear selected as the reference is determined by keeping the phase difference between 0 and π radians, or the time difference positive.
Annotation 4 A decimal value for u, where –1.00 ≤ u ≤ +1.00, replacing the subscript u in the NuS( ) , condition indicates the degree of interaural noise correlation, e.g., N + 0.9Sm. Note that the correlation always requires a sign and where phase is exactly equal to an integral number of radians, it should be expressed as nπ/π.
Annotation 5 An integer appearing as the subscript indicates the sound pressure level difference, in decibels, between signal and noise, or noise, at one ear relative the signal and noise, or noise, at the other ear, e.g., N2Sm.« Back to Standards Terminolgy Index