Sound waves can reflect off surfaces ... through the auditory nerve our brain interprets these signals as sound Trace 1. small amplitude, low frequency → a quiet, low pitch sound.

Sound is a vibration that travels through air as a wave. These waves are created when an object moves back and forth, compressing and decompressing air molecules. The frequency of these vibrations ...

Crucially, the sound waves — specifically, ultrasound waves — used to create the audible enclaves can't be heard along the path they travel and can even be bent to avoid obstacles. Only when ...

A group of international researchers have developed a way to use sound to generate different types of wave patterns on the ...

Using high-frequency sound waves to make tunable optical filters ... sensing and hyperspectral imaging applications for detecting trace gases, organic compounds and other materials.