Exhibition of phonographs and gramophones. The history of the reproduction of sound begins with Thomas A. Edison's invention of the phonograph. In 1878, the famous American inventor developed a system that transformed sound vibrations into groove cut in a spiral around a cylinder. Almost ten years later, Emile Berliner, a German emigrant in the US, invented the gramophone: a device that used the same principle as the phonographe, but which substituted the cylinder whit a disc. Within a few decades, through successive modifications and support of entrepreneurs willing to invest in its future, an invention initially considered merely a curiosity had become a widespread presence in the houses and customs of the middle classes. Slowly, the perception of music began to canghe.