Fig. 5
From: Room-localized speech activity detection in multi-microphone smart homes
Motivation for the SRP-based feature (the acoustic maps are shown in 2D, obtained after summing SRP-PHAT values over the z-axis). Top: acoustic map example for speech inside the living room of the apartment of Fig. 1. Middle: acoustic map example for speech outside the living room. Bottom: living room door area (two doors) employed in the SRP-based feature computation (8) for this room