The microphone on your device is used to identify the sound and change it into an SPL value. This includes ballistics, ranges, filters and decay rates. This professional-grade sound level meter is measured following a traditional sound press level (SPL) meter. It has several features that can measure the intensity of surrounding noises. It’s standard measurement ranges between 30 to 130 dB. This free app transforms your smartphone into a pre-measured, precise, and conveniently portable sound level meter. Here are some of the best rated decibel meter apps: Whether you are out at a concert, a restaurant, in a sports arena, or any other environment where the noise exceeds safe levels for your hearing, you can now use a smartphone app to measure the noises in your environment. Decibel Meter application uses the built-in microphone to determine the level of sound it detects, and displays this in decibels (dB) as max, average and peak sound pressure level.
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