Binaural Hearing

Two ears, microsecond timing: how the brain triangulates where a sound comes from.

Core Principles & Analysis

• Direction is computed from interaural time and loudness differences — timing sensitivity reaches tens of microseconds.
• Rayleigh’s duplex theory splits the work: timing dominates low frequencies, level differences high ones.
• Binaural recordings made with dummy heads recreate startling 3-D space over headphones.