[Main Function] Ambient noise is measured using a microphone mounted on a smart device. - Shows the decibel of the microphone input sound. - The color and size of the circle changes depending on the size of the current decibel. - It shows three values: maximum (Peak), average (Avg.), And minimum (Min.). - It shows the measured result in two types of graphs. - The first graph shows the measured values over time. - The second graph shows the measured value according to the sound bandwidth. - Measurement values may vary depending on the device environment. - Press the CLEAR button to initialize the measured value and graph. - Banner ads are included at the bottom of the screen.