Table 1.

The number of the participants exceeding 75 dBA of the preferred listening level

	Pop-rock music		Classical music
	Quiet condition	Noisy condition	Quiet condition	Noisy condition
Earbuds (n=23)	4	23	2	23
Headphone (n=23)	4	23	3	23
Canal earphones (n=23)	5	18	2	18
CP with NC (n=10)	0	2	0	1

CP, canal earphones; NC, noise cancelling