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Sound

All articles tagged with #sound

Stressed Plants Emit Ultrasonic Clicks, Hinting at Hidden Sound Language
science1 month ago

Stressed Plants Emit Ultrasonic Clicks, Hinting at Hidden Sound Language

Scientists say stressed plants emit ultrasonic noises—clicks and pops inaudible to humans. A 2023 Cell study led by Lilach Hadany at Tel Aviv University found dehydrated tomato and tobacco plants averaged about 40 clicks per hour, with sounds detectable from over a meter away, suggesting a potential sound-based form of plant communication that could influence nearby insects and animals; cavitation is a likely source, though other mechanisms are being explored, along with how these sounds operate in natural environments.

via The Daily Galaxy|
#biology#communication#ecology
Two Labs, One Bassline: Pink Floyd Tracks Breakthroughs in Brain Research
science1 month ago

Two Labs, One Bassline: Pink Floyd Tracks Breakthroughs in Brain Research

Two independent labs—UC Berkeley and Technion—used Pink Floyd’s 'Another Brick in the Wall, Part 1' as a test stimulus to probe brain activity and delivery science: Berkeley reconstructed the song from intracranial recordings, while Technion showed that low-frequency sound can influence cellular uptake and gene expression in neurons and mice via lipid nanoparticles, with fMRI showing brain activation in humans. The shared choice of a bass-heavy track underscores bass as a meaningful signal, but the work is exploratory, not therapeutic, with translational questions and limited quantitative data remaining.

via Headphonesty|
#brain#drug-delivery#music
Why Is the Dodge Hellcat Supercharger So Loud?
automotive10 months ago

Why Is the Dodge Hellcat Supercharger So Loud?

The loud sound of the Dodge Hellcat supercharger is caused by its twin-screw design that forces more air into the engine, creating a high-pitched whine that complements its aggressive V8 roar, all tailored to satisfy high-performance driver demands. The supercharger, made by IHI, enhances engine power and sound, contributing to the Hellcat's reputation as a high-performance muscle car.

via Jalopnik|
#automotive#dodge-hellcat#performance
science10 months ago

Space's Surprising Noise Levels

Space itself is silent due to the vacuum, but sound can exist in various forms within celestial objects and atmospheres, such as pressure waves from black holes, gas clouds, and planetary atmospheres, which can be converted into audible sounds for study. These sounds reveal important information about the universe and planetary conditions, despite being inaudible to human ears.

via Salon.com|
#astronomy#black-hole#planetary-atmospheres
"The Science Behind the Squeaking Sound of Snow Underfoot"
science2 years ago

"The Science Behind the Squeaking Sound of Snow Underfoot"

Scientists have long understood how snow forms, but the reason behind the satisfying squeak it makes when walked on has been less explored. W. Craig Carter, a professor at MIT, likens the sound to breaking tiny particles, with the intricate architecture of snowflakes and sintering playing a key role. As temperatures drop, the likelihood of snow crunching increases, similar to the way wet sand also squeaks due to adhesions forming between grains.

via Livescience.com|
#science#snow#snowflakes
"Silencing Your Facebook Newsfeed: A Step-by-Step Guide"
technology2 years ago

"Silencing Your Facebook Newsfeed: A Step-by-Step Guide"

Facebook recently introduced a new sound that occurs while scrolling through the newsfeed on iPhones to make the experience more engaging. For those who find it distracting, the sound can be turned off by opening the Facebook app, tapping on the menu, selecting "Settings & Privacy," choosing "Settings," finding "Media," and toggling off the switch for "In-App Sounds" under "Sounds."

via WBAL TV Baltimore|
#facebook#iphone#settings
The Silent Void: Understanding the Absence of Sound in Space
science2 years ago

The Silent Void: Understanding the Absence of Sound in Space

Sound cannot travel through space because it is a vacuum with almost no matter to carry sound waves. In space, there is no air or molecules to vibrate and transmit sound. Therefore, there is no sound or echo in space. However, there are particles in space, and in certain conditions, such as in plasma, sound waves can travel, although at different speeds and wavelengths. NASA has even recorded the sound of a black hole stirring up plasma in deep space, although it is too low in frequency for the human ear to hear.

via The Conversation|
#atmosphere#black-hole#science
"Doritos Unveils Revolutionary AI Software for Silent Snacking Experience"
technology2 years ago

"Doritos Unveils Revolutionary AI Software for Silent Snacking Experience"

Doritos has introduced the world's first quiet snacking AI software, addressing the issue of loud crunching sounds while gaming. Research shows that 85% of US gamers reach for Doritos during gaming sessions, but 30% say that the sound of crunching affects their performance. The software aims to eliminate crunching sounds, allowing gamers to snack without disrupting their gameplay.

via Interesting Engineering|
#ai-software#doritos#gaming
"NASA Unveils Eerie Soundscapes from the Solar System"
space-science2 years ago

"NASA Unveils Eerie Soundscapes from the Solar System"

NASA has released haunting recordings of the Solar System, converting plasma waves and radio waves into sound. Each celestial body has its own unique sounds, from the Sun's constant roar to Saturn's eerie sci-fi movie soundtrack. Even Jupiter's moons emit robotic blips and bleeps, while Mars captures the haunting sounds of its winds. Converting light into sound helps scientists uncover hidden details and provides a mesmerizing experience for those seeking to explore the vastness of space.

via ScienceAlert|
#nasa#plasma-waves#solar-system
Silent Sounds: Scientists Confirm Human Ability to Hear Silence
neuroscience2 years ago

Silent Sounds: Scientists Confirm Human Ability to Hear Silence

A new study suggests that the brain actively processes silence in a similar way to sound, challenging the notion that silence is simply the absence of noise. The study, involving 1,000 participants, showed that the brain perceives silence as it does sound, leading to the illusion that one continuous silence is longer than two separate ones. The research suggests that our brains pay attention to silence, explaining why we notice pauses in conversations or the hush at the end of a musical performance. The findings highlight the complex nature of perception and the brain's ability to process absence of sound.

via Daily Mail|
#brain#neuroscience#perception