Process for the preparation of a phonograph disc

A process for the production of a phonograph film or disc for analog storage, recording and/or reproduction of a sound content, comprising at least the following steps:

• cold pouring, on the surface of a molding disc bearing at least one relief configured to negatively encode said sound content distributed in a spiral-like direction, starting from the perimeter edge towards the center of said surface, of an aqueous composition comprising a gelling agent of natural origin, so as to form a homogeneous film or layer of said aqueous composition on said surface of the molding disc having a flat face and a printed opposite face, and allowing said film or layer to solidify;
• said relief being configured to form, following said solidification, a corresponding groove encoding said sound content on the printed face of said film or layer in contact with said surface of the molding disc;
• separating said film or layer from the molding disc in such a way as to obtain said phonograph film or disc.