But even everyday noisemakers will gradually cause hearing loss if a person is exposed to them for long enough periods. This includes loud stereos, as well as vacuum cleaners, power lawn mowers, shop tools, sandblasters, snowmobiles, and even children's toys. So, adjust the volume control on your stereo to conversation level, or a little louder. If you must, you can play music at a high volume for a song or two. But limit listening to your stereo at a loud volume to about 15 minutes a day.
Cotton balls do little to muffle noise.
If you must be around dangerously loud noises, wear earplugs or earmuffs. This often signals tinnitus, a type of hearing problem. People's speech sounds mumbled. You cannot hear well over the telephone.