AGPtek Sound Spa Relaxation Machine is an excellent sound machine that can create you a relaxing sleeping environment by providing 10 soothing sounds including white noise and crackling fire. You can choose the sound as you prefer. You can operate it with a power cord adptor or 4 AA batteries. This machine is small and lightweight, making it possible to fit into a bag or suitcase during your travel. Anyone, especially who suffers from sleeping problem, will never want to be without it!
In signal processing, white noise is a random signal having equal intensity at different frequencies, giving it a constant power spectral density. White noise refers to a statistical model for signals and signal sources, rather than to any specific signal.
How does a white noise machine help me sleep?
White noise promotes relaxation prior to sleep by providing a constant, soothing sound for your brain to settle on. This helps quiet the mind and keeps you from focusing on disruptive sounds which interfere with the process of falling asleep.
Once you’re asleep, white noise works all night long to drown out the random noises that would have woken you up – either completely or just as partial “micro-awakenings”, which you may not even have remembered in the morning. This means that you sleep more solidly and deeply, and rise feeling more rested and restored.