White noise warning method and device

A warning device and white noise technology, applied in the field of alarms, can solve problems such as failure to achieve the alarm effect, difficult identification, and increased environmental pollution.

Active Publication Date: 2020-10-23
BESTAR HLDG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The intelligent sound alarm in the prior art mainly uses the method of indiscriminately amplifying the collected environmental noise to send out an alarm sound. On the one hand, this kind of alarm causes increased pollution to the environment. It is not easy to identify, and the alarm effect cannot be achieved.

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  • White noise warning method and device
  • White noise warning method and device

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0038] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordi...

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Abstract

The invention relates to the technical field of alarms, and particularly relates to a white noise warning method. The method comprises the following steps of acquiring an environmental noise signal; amplifying the acquired environmental noise signal; inputting the amplified environment noise signal into an MCU for operation, and obtaining a sound pressure level-frequency curve through operation; comparing the sound pressure level of each frequency point on the sound pressure level-frequency curve, and detecting to obtain the minimum frequency band of the sound pressure level; and amplifying awhite noise of the same frequency band corresponding to the detected minimum frequency band of the sound pressure level, wherein an amplified sound decibel is at least 5dB. The method is characterizedby collecting the environmental noise; carrying out conversion calculation on the environmental noise to select a continuous minimum sound pressure level frequency band; and by amplifying the white noise of the same frequency band corresponding to the frequency band, realizing a warning effect of the white noise, effectively distinguishing the noise and the warning sound to achieve the warning effect, and reducing a noise pollution generated by an existing alarm. The method can be suitable for various noise environments.

Description

technical field [0001] The invention relates to the technical field of alarms, in particular to a white noise warning method and device. Background technique [0002] White noise refers to noise with equal noise power spectral density contained in frequency bands of various bandwidths within a wide frequency range (20-20000HZ). In layman's terms, white noise is the sound in nature, the band is soft, slight, and rhythmic. For example, the sound of raindrops, the sound of frogs, the sound of waves, and the sound of wind blowing through the woods. In the case of the same sound pressure level, compared with the single-frequency alarm sound, the distance is longer, it is not harsh, and it is not easy to be annoying. [0003] The intelligent sound alarm in the prior art mainly uses the method of indiscriminately amplifying the collected environmental noise to send out an alarm sound. On the one hand, this kind of alarm causes increased pollution to the environment. It is also n...

Claims

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Application Information

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IPC IPC(8): G08B3/10G10L25/51
CPCG08B3/10G10L25/51
Inventor 潘俊付秋萍
Owner BESTAR HLDG
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