Survey of Auto-Volume Headphone
Thank you for helping us with the survey!
Would
you use headphone in relatively noisy environment (e.g. on a bus)?
yes
no
Are
you willing to be informed of the volume at the time you are listening to
something?
yes
no
Which
function(s) do you prefer on your headphone?
Showingthe surrounding noise level
Automaticallyadjust the volume to a comfortable level with the environment (in suitablerange)
Alarming(beep!) when current volume may damage ears (only once)
Noneof the above
How
much money are you willing to pay for the above functions?
Below$20
$20-$40
Above$40
Is there any other function you want on the earphone?(not necessary)
____________
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