- Patatap is a portable animation and sound kit. With the touch of a finger create melodies charged with moving shapes. Warning: contains flashing images.
- Onride Video des Van der Beek Top Scan 'Sound Machine' von Hoefnagels auf der Haagse Kermis in Den Haag 2020. Fahrpreis: 3,50€.
- 1) Noise machines make too much noise when set at full volume. Some produce enough sound to damage even adult ears over time. All machines tested were louder then normal human speech and much louder then the whisper most of us would use next to a baby’s ear.
The NIOSH Sound Level Meter App is a tool to measure sound levels in the workplace and provide noise exposure parameters to help reduce occupational noise-induced hearing loss. A more detailed explanation of common terms, good program elements, and implementation steps can be found in NIOSH Document: Preventing Occupational Hearing Loss - A.
For those in search of safe, non-drug sleep aids, sound machines are a popular choice. A National Sleep Foundation poll from 2012 found that 5% of Americans sleep with a “sound conditioner,” which is a catchall term for a fan, phone app, or other noise-producing device.
Michael Grandner, director of the Sleep and Health Research Program at the University of Arizona, says the “blanket of sound” these create is a lifesaver if you live on a busy street or anywhere else where loud nighttime noise is common. But even if your bedroom is pin-drop quiet, sound machines can be helpful, if you’re the type of person unsettled by a total absence of noise, or if you’re a light sleeper who wakes from even the softest sound.
Research supports the idea that a little background sound can help people tune out sleep-disrupting creaks or clatter. For a small 2005 study in the journal Sleep Medicine, researchers exposed sleepers to recorded hospital sounds either with or without a white noise machine. Their analysis of the sleepers’ brain waves found that those who slept with the white noise machine were hardly disturbed by the hospital sounds, while sleep arousals were frequent among those who slept without white noise.
There’s also so-called “pink noise” and “brown noise,” which can sound similar to white noise, but have different underlying acoustical properties. While white noise is composed of a more or less equal mix of low-, medium-, and high-frequency sounds, pink noise and brown noise emphasize low-frequency tones to a greater degree. Grandner describes pink noise as a hiss while brown noise is more of a shush. White noise falls somewhere in between, he says.
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A 2012 study in the Journal of Theoretical Biology found people enjoyed more stable, high-quality sleep when exposed to pink noise, as opposed to silence. Also, a 2017 study from Northwestern University found “sleep-dependent memory” scores improved among older adults after they slept with pink noise humming in their ears. There’s not much sleep research on brown noise, but Grandner says this is the one he prefers himself.
While companies that produce and market these noise machines—whether they make pink noise, brown noise, white noise, or other sounds—make a big deal of these sorts of findings, experts say all of this research is preliminary. “A more definitive study would be quite expensive and nobody has been willing to fund one,” Grandner says.
“I don’t think there’s enough evidence yet to say one type is better than another,” says Michelle Drerup, a sleep psychologist at the Cleveland Clinic. She’s unaware of any research that directly compares pink noise to white noise in terms of their effects on sleep. “I know from talking with my patients that some people prefer natural sounds, like a rainstorm or the rush of water, whereas others don’t want a sound they can attach an image to,” she says. Still others find all of these noises aggravating, she adds.
Based on the existing research, the optimal type of sound for sleep comes down to personal preference. “It all depends on the individual,” Grandner says
For some, the optimal sound might be none. “Biologically, you don’t need this [sound] to sleep,” he says, “and if you use it every night, you can get so used to it that you can’t sleep without it.” He likens these sound machines to both a “crutch” and a form of psychological addiction—albeit a relatively harmless one. The benefits of a sound machine can outweigh this downside, he says. But if background noise or silence isn’t the source of your sleeping issues, you may want to think twice before you add a sound machine to your bedtime routine.
Other sleep experts agree. Movavi photo noir 1 0 1. “I wouldn’t recommend [sound machines or apps] to someone unless they’re reporting difficulties with outside noises, or some type of environmental disrupter,” Drerup says. “Some people develop these rituals where they think they need to have something or they can’t sleep, or they get anxious when it’s not there, and that includes [sound machines].”
One thing Grandner advises for anyone and everyone: don’t sleep with a television on. “That’s too much variability,” he says of the sounds TVs emit. Whether a noise-sensitive sleeper prefers a fan, a sound machine, or a sounds-of-nature app, the important thing is that the ambient sound is predictable and consistent.
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EDIT POSTQuick Overview
Many sleepers rely on devices known as ‘white noise machines’ to fall and remain asleep. White noise machines generate high-pitched static, or white noise, that consists of randomized frequencies. These machines are compact and designed to rest on floors or bedside tables. Most of today’s models also include other features, such as headphone jacks and alarm functions.
In addition to white noise, white noise machines may also produce other colors of noise. These include static noises that decrease in volume for each added octave, such as pink and red/brown noise; and static noises that increase in volume per octave, such as blue and violet noise. Some also come with ambient and natural sounds. White noise machines are safe for children; they can be used to lull infants to sleep, as well.
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Read on to learn more about machines that produce white noise and other noise colors. Below you’ll find our picks for the best white machines sold today. Our choices are based on verified customer and owner experiences, as well as intensive product research and analysis.
The Best White Noise Machines
- Editor’s Pick – Yogasleep Dohm
- Best Travel Machine – Yogasleep Rohm
- Best Features – Sound + Sleep
- Best Budget Buy – Big Red Rooster
- Best High-End Option – Sound Oasis S-5000
- Best White Noise Machine for Babies – Hatch Baby Rest