Room 1 Room 2 T77(r A B X Z Unseen a The Answer (step 3) 令 Conclusions: The bright one(among three) Switch b The hot one(among left two) Switch a The left one Switch C Center of speech Technology, Tsinghua University Slide 11Center of Speech Technology, Tsinghua University Slide 11 Unseen A B C X Y Z Room 1 Room 2 ❑ The Answer (Step 3) ❖ Conclusions: ➢ The BRIGHT one (among three)  Switch B. ➢ The HOT one (among left two)  Switch A. ➢ The left one  Switch C