Sound Meter (SPL - sound pressure level) is an app which can measure the actual sound level meter with decibels (dB). Sound meter is also known as sound level meter, decibel meter (dB meter), noise meter, Decibel Meter, 2018 Sound Meter, 2019 Sound Meter, 2018 Decibel Meter, 2019 Decibel Meter, sound pressure level meter (spl meter). Sound Meter & Noise Detector.