Noise Detector
Most of the noise detectors in the market are either too professional or too expensive, so I want to devise a portable, budget-friendly, and interesting noise detector for ordinary people to protect their hearing. If the noise level rises up to 80dB or higher, the cat detector will meow three times to notice the user, and the timer will be triggered to count how long the user stays in the noisy area. The challenge for this device is to figure out how to translate the noise volume into an understandable code for the computer to estimate the noise level.
