Before revision: Luca de Samuele Cagnazzi provides an example of the use of the tonograph based on a notable verse by Ennius (Andromache): From the example provided by Cagnazzi , it's clear that the purpose of the device is to help store the features of human voice, its tones and music.
After revision: Luca de Samuele Cagnazzi provides an example of the use of the tonograph based on a notable verse by Ennius (Andromache): From the example above , it's clear that the purpose of the device is to help store the features of human voice, its tones and music.