We've talked about what sound waves are, now let's establish why they can help you sleep. The legacy of sleep sounds, white noise has lulled people to sleep for ages. Because white noise ...

trumpet the sound from the trumpet comes from a vibrating column of air created by buzzing lips of the trumpeter A sound wave is a longitudinal wave. When an object vibrates it produces a ...

See, every sound travels in the form of a wave, also called a sound wave — and each one is different. This is a sound wave of me saying "hello." And here's "goodbye." See? They're different.