A blanket is a large piece of cloth covering a bed, which helps keep you warm when you sleep.
A comforter is a very thick blanket, usually filled with soft and fluffy material inside. It will keep you extra-warm... and comfortable!
A quilt is a type of blanket made by sewing different pieces of fabric together, often with a colorful and decorative design. Quilts can be used as blankets for sleeping, or they can be hung on the wall as a type of art.
While using them, the sound reaches the ears directly. This sound should not exceed 90 decibels. Any volume above this threshold impacts hearing. Ideally, one should not use earphones continuously for more than 15 minutes. There is a threat of hearing loss beyond this point. So if you have to use a pair of this device, then make sure that you are giving some rest to the ears in between.