Sound Analyzer App

Dominique Rodrigues

About this app

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.

App with no ads, banner or popups.

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.

If you like the app, please rate it.

Ratings and reviews

Extremely useful app, this is easily accurate enough for my purposes. My only criticism is that, when zooming in on the graph, the lowest reading is always shown. I would like the graph to stay where I need it. However when paused the readout stays put and can be zoomed freely. Would it be possible for the graph not to reset after hitting play? Great work and many thanks.

I totally recommend this for the average user who wants to see how their sound system is working. It's not perfect, but for amateur and even non-critical professional use it's more than adequate. I'm a professional acoustical engineer and loudspeaker designer.

I have upped this app from 4 to 5 stars, it's still lacking 1 important part, no test tones. Those are available in other apps but there's no reason to not include at minimum a white noise generator or a sweep to make this app a complete and viable sound test tool to help adjust speakers for optimum playback. I found setting the screen to show more resolution the bands show an accurate depiction of each band as I moved eq sliders. your phone mic might skew results esp high and low frequencies

What’s new

Bug fixes