Table.

Summary of Noise Violation Types and Mean Rate of Occurrence

Violation	Violation Type	Source	Definition	M Rate (per min)
Conversation	1	Participant	Two or more participants conversing, and not yelling	2.85
Typing	1	Participant	Participant pushes down a keyboard key	1.43
Other voice	1	Participant	Vocal sounds, not conversation (e.g., laughing, snoring, singing)	0.45
Combinations	2	N/A	Multiple sound sources	0.29
Other non-voice	1	Participant	Other non-vocal sounds (e.g., mouse)	0.13
Eating	1	Participant	Sounds associated with eating (e.g., containers, bottles)	0.08
Chair	2	Participant	Chair sounds (e.g., creaking or banging against desk)	0.06
Cabinet	2	Staff	Cabinet doors opening or closing by staff	0.03
Doors	2	N/A	Doors opening/closing	0.03
Yelling	1	Participant	Participant raises voice to staff or other participant	0.01