Figure 3. Example Binaural Room Impulse Response (BRIR).

BRIR measured using microphones positioned inside the ear canal of one subject. Pilot testing determined that the shaded area contained perceptually relevant information while the subsequent reverberant tail (>21 ms) was discarded. The regions inside the blue and red ellipses represent direct and reverberant energy respectively. Six early-reflected peaks are visible in the preserved BRIR.