9. Sound Levels
M icrop hon e
Model
YOCA-YOHA 12
YOCA-YOHA 18
YOCA-YOHA 24
YOCA-YOHA 36
YOCA-YOHA 48
YOCA-YOHA 60
1).
12000btu/h 18000btu/h
Audibility limits of
continuous white
sound
Octave band center frequency + Hz ,
Ceiling
High speed airflow
Medium speed airflow
Low speed airflow
Ceiling
H
M
43
41
43
41
45
43
45
43
47
46
47
46
Ceiling
1m
L
H
38
46
38
46
40
48
40
48
44
49
44
49
Audibility limits of
continuous white
sound
M icrophone
Floor
Floor
M
L
44
41
44
41
46
43
46
43
47
44
47
44
Octave band center frequency + Hz ,
Floor