Fig. 10
From: Room-localized speech activity detection in multi-microphone smart homes
Visualization of error rates in living room-inside vs. living room-outside segment classification for each speech source position and orientation on the DIRHA-sim test set, using two features of Section 5.1. Upper: spectrogram texture smoothness. Lower: SRP-based feature. Blue and red circular sectors indicate low and high percentage of errors, respectively, while gray sectors indicate unused orientations