Same reason you you can push hard or soft against something. Somewhere there's an initial reaction, and the strength of that initial reaction - and which path that reaction takes - what arrives at the other end will be either hard or soft, or quiet or loud.
Loud sounds are high in volume and can often be heard from far away, while quiet sounds are low in volume and may only be heard at close range. You can use a decibel meter to measure the sound levels and determine if they are loud or quiet.
Pitch is not loudness; an elephant can make both loud and quiet sounds, however all of their sounds are relatively low pitch.
Loud instruments are the brass horns and electric guitars... soft is harmonica and klimba and glockenspeil.
it depends on the surface e.g. rough or smooth or how far the sound travels.
Small amplitude sounds are those that have low intensity and are not very loud. These sounds can be quiet or subtle, such as a whisper or rustling leaves. They are in contrast to high amplitude sounds, which are louder and more intense.
When you become paranoid or nervous, your heart beats faster, and your sences become more acute. This is why soft sounds seem louder.
It's a simile. It is also an oxymoron, with the idea of loud quiet (the noun quiet modified by the adjective loud).
quiet for us.
loud
Quiet Is the New Loud was created on 2001-03-06.
Quiet Mouth Loud Hands was created in 2007.
Antonyms for the word loud: inaudible, low, quiet, soft, subdued