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Automatic device for measuring voice parameters, noise and music
This app will turn your Android into a sensitive device that will measure the parameters of any digital sounds (voices, noises, and music). The device uses a new algorithm that allows you to calculate the numerical parameters of harmonic spectra. The measurements are carried out simultaneously on four independent channels and displayed in an intuitive way.

Automatic device for measuring voice parameters, noise and music.
It should be noted that even though this device allows you to measure the parameters of voices (and hidden emotions), it is not a conventional polygraph. It is a universal measuring instrument, which is designed for a variety of scientific experiments.