Interaural level differences alone can shift the perceived position of a sound source

Evidence

When both ears are presented with the same type of signal, the sound source can be shifted to one side by increasing the level on that side. This effect is demonstrated with narrow-band noise at 1 kHz which is presented binaurally with levels of (L, R): (60 dB, 60 dB) centre, (58 dB, 70 dB) right, (70 dB, 58 dB) left, (70 dB, 70 dB) centre, (74 dB, 50 dB) left, and (46 dB, 70 dB) right. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 3357

Categorization

• XREF: connects to: Interaural level differences only emerge at frequencies above roughly 400 Hz. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1434; Directional hearing rests on interaural time and intensity differences. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 704