Table 1.

Number of audio signals recorded at each position in all three rooms.

Orientation	Zero Degrees (0°)			Thirty Degrees (30°)			Sixty Degrees (60°)
Distance (meter)	1 m	2 m	3 m	1 m	2 m	3 m	1 m	2 m	3 m
Room 1	1000	993	1000	1000	1000	1000	1000	1000	1000
Room 2	1000	1000	945	1000	1000	1000	1000	1000	1000
Room 3	1000	1000	1000	1000	1000	1000	1000	1000	1000