A sound wave is a vibration that travels through a solid, liquid or gas such as the air or water. A loud sound has a large amplitude, a high pitched sound has a high frequency.

This invention generates high-frequency sounds in the high-pitched range of human hearing, composed of sound waves between 15,000 and 20,000 cycles per second, which can annoy younger people but ...

Sound is all around us. Everything we hear in our day-to-day lives has a distinctive sound, from the jingling of keys to the tapping of footsteps in a hallway. Sound is created when objects vibrate.

Humans perceive amplitude as loudness, so if the sound is really loud, the waveform will show tall crests. These crests indicate the amplitude. If the sound has a high pitch, the waves will appear ...

Researchers have come up a means to levitate a 2-inch solid polystyrene sphere using ultrasonic acoustic waves pitched above the frequency a human can hear.

The high pitched sound was sth I couldn't ignore. I have a relatively quite working space and the sound kept being distractive. ... (I compared it using a sinus wave generator).

For example, if a high-pitched sound travels 213 feet on Earth, it will travel just 26 feet on Mars. While sounds on Mars can be heard by human ears, they are incredibly soft.

Anything above 240 hertz is considered a high-pitched noise, whereas anything below 240 hertz is low-pitched. ... which means it's more difficult for acoustic waves to project very far.

Our hearing picks up a limited range of sounds, limits that were used successfully to keep teenagers from congregating outside British grocery stores by a device called the “teenage sound ...