Helium is much lighter than air, so sound waves move much faster through the gas. This amplifies the higher frequencies in your voice. The gas sulfur hexafluoride works in the opposite way.

Sound can travel well through liquids where the particles are further apart. Whales contact each other over huge distances in the ocean. When we speak our voice travels as vibrating waves through ...

Normally, sound waves travel in a straight line unless they ... This technology could be used to enable private voice communication or to play music that only certain people can hear in public ...

sound panels, or even blankets before recording to ensure that your voice sounds its best. Once your space is established, your next step is to use the right equipment. For clear, crisp audio ...

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 ...