System for improving sleeping and production method and application method thereof
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 东莞市芯飞电子科技有限公司
- Publication Date
- 2011-09-21
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention relates to a system for promoting sleep and a method for making and using the same, especially to a system for promoting sleep related to white noise and a method for making and using the same. Background technique
[0002] White noise is a random signal or random process with a constant power spectral density. In other words, the power of this signal in each frequency band is the same, because white light is a mixture of monochromatic light of various frequencies (colors) , so this property of the signal to have a flat power spectrum is said to be "white", and the signal is therefore called white noise. In contrast, other noise signals that do not have this property are called colored noise. The white noise that exists in life includes the rustling sound from audio and video equipment such as radios and televisions, the background noise emitted by some electrical appliances when they are working, the sound of fans, air conditioners, etc...