Fonos is the Voice Analysis System developed by Inventis, Italy integrates all the main voice analysis parameters.

It includes professional hardware dedicated to voice acquisition and recording and has 2 main
software modules : The Voice Analysis Module and the optional Phonetogram Module.

The Voice Analysis module performs a deep off-line analysis of the patient phonation, extracting the following parameters:

• Fundamental frequency
• Energy and peak-to-peak amplitude
• Main vocal parameters, like jitter, shimmer, F0 and amplitude modulations and Harmonic to Noise Ratio, with graphical comparison to normative data
• Narrow- and broadband spectrogram
• First 4 formants with bandwidth directly on the spectrogram
• Power spectrum
• Linear Predictive Coding (LPC)
• Long Time Average (LTA) spectrum

With the Phonetogram module (optional) you can execute the voice range profile analysis in the two classical ways: Free Mode and Target Note. After the test, the minimum and maximum values and the ranges of F0 and intensity are displayed.