Diaphragm

The phonograph proved that "only sound remains"

This documentary begins with how the phonograph device entered Iran, which was the gift of Shah Qajar, and examines the process of recording the voice of Iranians on this device and later on the gramophone!

In the pages of our country's history, there was a page that plays a role in preserving the audio memory of Iranians; From the sound to the singing, from the music to the plea and the news that was telling, news is coming!