Grey noise is random noise whose frequency spectrum follows an equal-loudness contour (such as an inverted A-weighting curve). The result is that grey noise contains all frequencies with equal loudness, as opposed to white noise, which contains all frequencies with equal energy. The difference between the two is the result of psychoacoustics, more specifically the fact that the human hearing is more sensitive to some frequencies than others. Since equal-loudness curves depend not only on the individual but also on the volume at which the noise is played back, there is no one true grey noise. A mathematically simpler and clearly defined approximation of an equal-loudness noise is pink noise which creates an equal amount of energy per octave, not per hertz (i. e. a logarithmic instead of a linear behavior), so pink noise is closer to "equally loud at all frequencies" than white noise is. (Wikipedia).
Jonathan defines what white noise actually is and how it's used to mask other annoying sounds. Learn more at HowStuffWorks.com: http://science.howstuffworks.com/question47.htm Share on Facebook: http://goo.gl/n7YNrZ Share on Twitter: http://goo.gl/Fq9InS Subscribe: http://goo.gl/ZYI7Gt V
From playlist Episodes hosted by Jonathan
Time Series Talk : White Noise
Intro to white noise in time series analysis
From playlist Time Series Analysis
White vs. Pink Noise: Which Will Help You Sleep Better?
Is pink the new white? Find out why pink noise may be better for your sleep and memory. If We Heard from Aliens, What Would It Look Like? - https://youtu.be/PswBhfUnwr0 Read More White, pink, blue and violet: The colours of noise http://www.wired.co.uk/article/colours-of-noise "Ever wond
From playlist Elements | Seeker
Sound vs. Noise: What’s the Actual Difference? (Part 1 of 3)
Noise and sound are not the same thing… really, they aren’t! What exactly is noise? Part 2 of 3 - https://youtu.be/XhFhK97hrdY Part 3 of 3 - https://youtu.be/yTyYZFcxGGQ Read More: Signal-to-Noise Ratio and Why It Matters https://www.lifewire.com/signal-to-noise-ratio-3134701 “You
From playlist Seeker Plus
What Would You Do - Grey's Anatomy - Anushka Manchanda
Grey's Anatomy Song. Tell me now what would you do, What would you say When there is no ...black or white, but only shades of grey (2) The answers arent always easy and life can mess you up What would you do when they try to take you down What would you do when you feel like you dont belo
From playlist Western Music
In this video i demonstrate sound waves interference and standing waves from loudspeaker used sound sensor. The frequency on loudspeaker is about 5500Hz. Enjoy!!!
From playlist WAVES
Grey Whale: The Knuckle Back Whale
These whales have the longest migration of all mammals, and we're about to meet them on their journey. Watch with Described Video here: https://youtu.be/7atVPHAFfJk Support Animalogic on Patreon: https://www.patreon.com/animalogic Subscribe for new episodes on Fridays http://bit.ly/Sub
From playlist Animalogic
Waves 4_2 Sources of Musical Sounds
Problems dealing with musical sounds.
From playlist Physics - Waves
Equipped with unique adaptations that make them both good at hunting and getting their creep on, owls are totally the ninjas of the bird world. Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go
From playlist Uploads
Night Light and White Noise Sound Machine // [RAISING BABIES]
I was out of town recently, and we forgot our one-year-old's sound machine. I didn't love the options I found on YouTube, so I made my own! Here's ten hours of a slowly changing light and a soothing white noise sound machine.
From playlist Night Lights and Sound Machine
Bob Ross - In the Midst of Winter (Season 31 Episode 12)
Bob Ross fans! It’s ‘time’ for some happy trees, and we’ve got just what you need: https://pxlfy.me/BobRossWatchMightyMojoToys It’s a cold, cold winter day but Bob Ross offers a warm and roomy barn as refuge from the snowy blanket covering the farm. Season 31 of The Joy of Painting with
From playlist The Joy of Painting -- The Full Collection (Seasons 1 to 31) (in chronological order)
64 Shades of Martian Grey - Computerphile
NASA had to implement error correction for the spacecraft that travelled to Mars - Professor Brailsford explains how the Mariner series managed to send back pictures from another planet. Reed Muller Code Explained: https://youtu.be/CtOCqKpti7s Inside the CPU: https://youtu.be/IAkj32VPcUE
From playlist Subtitled Films
A False Narrative: White Markets, Black Markets
In this talk, Andreas picks apart the false dichotomy of 'rainbow' market types (white, grey, black, red, blue), the underlying moral assumptions in these classifications, and why Bitcoin's colorblindness matters in a world where state 'justice as a service' (JaaS) is not only jurisdiction
From playlist English Subtitles - aantonop Videos with subtitles in English
Meet and Greet: Romeo the African Grey Parrot!
Go to http://curiositystream.com/animalwonders to start streaming Hummingbird: Jewelled Messengers. Use the promo code "animalwonders" during the sign-up process and you’ll get an annual subscription for just $1.25 per month. While Romeo is settling in at Animal Wonders, see how and why h
From playlist Meet and Greets
Protecting The Amazon Rainforest's Wildlife | Inside Nature's Marvels | Real Wild
The Amazon is the largest river on Earth and at the heart of an extraordinary ecosystem, supporting an abundance of colourful wildlife. The rainforest is still one of the least populated areas in the world, but the greed for more farmland puts pressure on its natural habitat. Nevertheless,
From playlist The Science Of Nature | Spark X Earth Stories X Real Wild X Pets & Vets
Watch with Described Video. These whales have the longest migration of all mammals, and we're about to meet them on their journey. Support Animalogic on Patreon: https://www.patreon.com/animalogic Subscribe for new episodes on Fridays http://bit.ly/SubscribeToAnimalogic ----------- SOC
From playlist Described Video
When 90dB is LOUDER than 120dB
Learn to use your career to make a difference at https://www.80000hours.org/minuteearth We often use decibels, a measure of sound pressure, to describe how loud something is - but loudness is caused by how we perceive sounds, and the two often don't line up. LEARN MORE ************** To
From playlist Biology
skip to 3:50 if you are impatient.
From playlist NightHawkInLight Community Video Responses!
Birds can communicate with each other in lots of ways, but some types of birds can learn human words! But just because they learn human words, does that mean that they can understand them? ---------- Love SciShow Kids and want to help support it? Become a patron on Patreon: https://www.p
From playlist SciShow Kids