Sound Analyzer App lets you use your smartphone as a Sound Level Meter (SLM) and a Real time Audio Analyzer (RTA). Environmental noise, measured in decibel (dB) can be monitored in real time. The microphone sensitivity is adjustable by means of the calibration menu.

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Features as sound meter (decibel meter):
A, C and Z (flat) frequency weightings,
Fast and Slow time weightings,
Equivalent A-weighted continuous sound level (LAeq),
A-weighted sound exposure level (LAE or SEL),
A-weighted sound exposure level for a nominal 8-hour working day (noise dosimeter: LEP,d or LEX,8h).

Features as 1/n octave spectrum analyzer:
1/3 octave band spectra: Centre frequencies 25 Hz to 16 kHz,
1/1 octave band spectra: Centre frequencies 31.5 Hz to 8 kHz,
A, C and Z (flat) frequency weightings,
Fast, Slow and Impulse time weightings,
Equivalent continuous sound level (Leq).

If you are not familiar with Sound Pressure Level (SPL) indicators, use the default selection: LAF and LAeq indicators respectively for instantaneous and averaged noise measurements.

Warning: This App does not claim to be an alternative to an approved Sound Level Meter. The accuracy of the measurements depends closely on the specifications of the microphone/amplifier which are not designed in a smartphone for Sound Pressure Level (SPL) measurements. This App is for indication only or for educational purpose. Use an approved Sound Level Meter where it is required.

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