Hvad Er Brown Noise?

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Brun støj er en af ​​de mange farver af støj, som også omfatter hvid støj, lyserød støj og blå støj. Brun støj er også kendt som brownian støj, fordi dens ændring i lydsignal fra et øjeblik til det næste er tilfældigt.

Brun støj er en af ​​de mange farver af støj, som også omfatter hvid støj, lyserød støj og blå støj. Brunt støj får dog ikke sin moniker fra farven - det er faktisk opkaldt efter botanikeren Robert Brown, der opdagede Brownian motion (random particle motion) i 1800'erne.

Brun støj er også kendt som Brownian støj, fordi dens ændring i lydsignal fra et øjeblik til det næste er tilfældigt.

I modsætning til hvid støj, hvis spektraldensitet (effekt per Hertz) er ens i alle frekvenser, har brun støj en spektral densitet, der er omvendt proportional med dens frekvens kvadret - med andre ord sænker dens kraft betydeligt, da frekvensen stiger.

Som følge heraf har brun støj meget mere energi ved lavere frekvenser end det gør ved højere frekvenser. Brunt støj kaldes undertiden rødt støj, fordi det er noget analogt med rødt lys, som har en lav frekvens.

Til det menneskelige øre er brun støj ligner hvid støj, men er meget dybere - den har lyden af ​​et lavt brus, ikke i modsætning til det stærke vandfald.

Selvom navne er ens, har brun støj ikke noget at gøre med den mytiske brune note, en hypotetisk lavfrekvent lyd sagde at få folk til at miste kontrollen over deres tarm.

Følge efter Joseph CastroTwitter. Følg os @wordssidekick, Facebook & Google+.

Hvad Er Brown Noise?

FAQ - 💬

❓ What is the brown noise for?

👉 People who find their focus or concentration improves with low-level background brown noise may just be benefiting from “sound masking”: “The sound blocks out other sounds so you're less distracted.” This is probably also why people report improved sleep with brown noise. There may be some placebo effect, too.

❓ Is it OK to listen to brown noise?

👉 Brown noise in itself isn't harmful. But the biggest cause of concern is playing brown noise, or any ambient noise for that matter, at a volume that's too loud. If you're using music or sounds to improve your sleep and productivity, protecting your hearing is important.

❓ Which is better white pink or brown noise?

👉 “White noise is a great option because it has a consistent sound that can help to mask outside noise,” says Harris. Pink noise may be a good choice if white noise is too high-pitched or irritating, the experts note, and brown noise may be more suitable for those who want a deeper sound.

❓ What is the brown noise pattern?

👉 It is also called "red noise", with pink being between red and white. Brownian noise can be generated with temporal integration of white noise. "Brown" noise is not named for a power spectrum that suggests the color brown; rather, the name derives from Brownian motion, also known as "random walk" or "drunkard's walk".

❓ What is blue noise?

👉 Blue noise is essentially the opposite of Brown noise — its energy is concentrated at the high end of the spectrum, meaning it's all treble and no bass. An example might be a hissing water spray. You'd most commonly use blue noise to minimize distortions during sound engineering.

❓ What color noise is rain?

👉 Pink noisePink noise uses a consistent frequency, or pitch, to create a more even, flat sound, like a steady rain, wind rustling through trees, or waves on a beach.

❓ What is Brownian noise?

👉 In science, Brownian noise, also known as Brown noiseor red noise, is the type of signal noiseproduced by Brownian motion, hence its alternative name of random walknoise. The term "Brown noise" does not come from the color, but after Robert Brown, who documented the erratic motion for multiple types of inanimate particles in water.

❓ Does Brown noise make a hissing sound?

👉 For people with standard hearing function, brown noise’s better-known and better-studied cousin, white noise, has a more hissing sound than brown noise. Pink noise is a softer version of white noise, playing lower frequencies a bit louder. Violet noise plays higher frequency sounds louder than brown noise and also makes a hissing sound.

❓ Why is brown noise better than white noise?

👉 Brown noise has more power in the lower frequencies, giving it a bass-heavy, richer, rumbling sound that is deeper than white and pink noise. It has rich sound-muffling qualities and is thought to narrow focus, making it effective for listening to while working. Some research suggests it may help improve thinking skills.

❓ Is brown noise harmful?

👉 There have not been any reported dangers with using any color sound. As with any sound, you shouldn’t listen to any noise over 70 decibels for prolonged periods as it can cause damage to your hearing.


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