DIY Sound Laser : Big Speakers Aren’t Required for Pinpoint Sound

Create a focused speaker so your music targets only the listener. That demodulates at 40 kilohertz, with an H-bridge and ...
The New York Times

A Shark Breaks Its Silence With Some Clicking Sounds

Researchers in New Zealand have made what they believe is the first recording of a shark actively making noise. By Yan Zhuang Dolphins whistle. Whales sing. Fish croak, chirp, grunt, hum and growl.
npca.org

Our National Parks Need Sound Science

The National Park System’s breathtaking landscapes and cultural and historic sites serve as living laboratories for science and discovery that help safeguard our nation’s legacy. Yet today, ...
Popular Science

A 3D-printed duck-billed dinosaur’s skull could help us learn what it sounded like

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. While the roar of the mighty Tyrannosaurs rex in the Jurassic Park ...
Hosted on MSN

Making a sound lens

Making a sound lens involves using a balloon filled with a gas denser than air, like carbon dioxide to bend sound waves and focus them, similar to how a glass lens bends light, making sound louder at ...
Science Daily

Why do birds make so many different sounds? A study gets at the underlying factors

Researchers conducted a global study of the factors that influence bird sounds, using more than 100,000 audio recordings from around the world. Birds make sounds to communicate, whether to find a ...
CNN

They are known as silent killers. Now, unprecedented recordings reveal first known shark sounds

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Sharks have a ...