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.

Have you ever noticed that your recorded voice sounds different from what you hear in your head? This intriguing phenomenon is because of the unique ways we perceive our own voices. Understanding ...

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 ...

Speaker The audio signal causes the radio speaker's diaphragm to vibrate, which creates sound waves. A sound wave equivalent to the singer's voice radiates from the speaker.

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. We’ve already seen sound waves do some pretty amazing things. For example, they can ...