adjust volume

adjusting volume

adjustment

boost

boosting

bring down

bring up

cell phone

cellphone

cellular phone

clear sound

decrease

decreasing

efx

fx

gain

higher

increase

increasing

increment

less

less volume

louder

lower

lowering volume

minus one

mobile

mobile device

mobile phone

modify volume

more

more volume

plus one

press button

quieter

raise

raising

regulate

set volume

setting the volume

smartphone

softer

sound settings

tablet

take down

tone down

tone up

volume

volume down

volume up

set the volume

sound setting