Undoubtedly the sound level measuring dices that I prefer is dB Meter – measure sound & noise level in Decibel. The sound pressure level is measured to determine noise exposures. Various instruments and techniques may be used precisely. The choice depends on the workplace noise and the information needed. However, the first step is to determine if there is a noise problem in the workplace. The integrating sound level meter is similar to the dosimeter.

https://play.google.com/store/apps/details?id=com.dbmeterpro.dbmeter

It determines equivalent sound levels over a measurement period. The major difference is that an ISLM does not provide personal exposures because it is hand-held like the SLM, and not worn as it yields a single reading of a given noise, even if the actual sound level of the noise changes continually. It uses a pre-programmed exchange rate, with a time constant that is equivalent to the SLOW setting on the SLM.

The sound is evaluated by sound level measuring devices, and acoustic measurement values are shown on the display of the sound level meter. The most common unit of acoustic measurement for sound is the decibel (dB); however, some sound level meter devices also determine the equivalent continuous sound level