Sound Meter HQ PRO

This application is a utility tool that measures the noise level in your surroundings. However, it is important to note that this app should not be used as a professional device for measuring decibels. The app uses the built-in microphone on your device, which is designed to capture human voices and may not accurately capture sounds above 90-100 dB. This maximum value may vary depending on the type of microphone you have. Additionally, some devices have Automatic Gain Control (AGC) which can interfere with accurate sound pressure level measurements.

The app displays the measured noise level on a gauge, with a range of 0 to 140 dB. It also shows the minimum and maximum levels of sound that have been registered. These values can be reset at any time by using the "Reset" button.

One unique feature of this app is that it also displays the noise power in a descriptive way. This means that it provides a list of common sounds and their corresponding decibel levels, such as breathing, rustling leaves, whispering, and more. This can help users better understand the noise levels in their environment.

For those who have access to or possess a professional sound pressure level measurement device (SPL meter), the app also offers a calibration feature. This allows users to compare the decibel readings on the app with those on a scientific measurement device and adjust accordingly using the + and - buttons in the calibration menu.

Some other notable features of this app include its quick reaction to changes in sound levels, the presentation of decibel levels on the gauge and in a descriptive way, and the ability to calibrate the results according to a professional device. Overall, this app can be a useful tool for monitoring noise levels in various environments, but it should not be relied upon as a professional measurement device.