Sound

A team of researchers has reported the development of an algorithm that can translate the emotional state of pigs from the sound of their grunts. The researchers indicate the system could be used to monitor the well-being of pigs on a farm in real-time.

Regrowing or replacing bone lost to disease is tricky and often painful. In a new study Australian researchers have found a relatively simple way to induce stem cells to turn into bone cells quickly and efficiently, using high-frequency sound waves.

We generally don't think of fish as being a vocal bunch – after all, anglers don't typically use "fish calls" to lure them in. According to a new study, however, approximately two-thirds of all fish species probably use sound to communicate.

If you hear gunshots in an urban setting, it's important to get the police to their source as quickly as possible. A new system is being developed to help, by combining autonomous drones with an existing shot-locating technology.

It can get tiresome, continually having to tell groups of children – or even adults – to be quiet. That's where a new sound-sensitive lamp comes in, as it does the job for you by changing color in response to rising noise levels.

Whatever other qualities they may possess, jet fighters are not known for their quiet engines. They could soon become considerably less noisy without any loss in performance, though, thanks to a relatively simple alteration.

Scientists in Japan have broken new ground when it comes to using sound waves for levitation, by demonstrating for the first time how the technology can be used to lift small polystyrene balls off of a rigid surface.

Nobody likes hearing their neighbors' music or loud conversations. Soundproof wall materials, however, can be quite expensive. Swedish scientists have developed a thinner, less costly alternative, in the form of a spring-loaded sound-damping screw.

A new brain imaging study is claiming misophonia, a condition where certain sounds trigger deeply unpleasant physical responses, could be related to an over-sensitive brain pathway responsible for mirroring behaviors in others.

Although the chest-beating of male gorillas is a common behaviour, its purpose still isn't entirely understood. Now, however, scientists believe it may serve as a means of acoustically indicating the size of the apes' bodies.

A new metastudy conducted in conjunction with the US National Park Service has found that the sounds of nature are not only pleasant, but can have a variety of health benefits – though finding these sounds isn't always easy.

We’ve seen images of Mars for decades, but now NASA has released the first audio clips recorded on the Red Planet. The Perseverance playlist includes sounds of Martian wind, a laser zapping rocks, and the crunch of gravel under the rover’s wheels.