Optical reconstruction of vinyl and lacquer.

One of the problems related to the sound memory of the twentieth century is to wear and the fragility of the materials used in the early stages and, therefore, precious, of sound recording. Vinyl, 'pans', lacquers and cylinders are often unique finds and techniques of listening for breeding purposes can also irreparably damage the precious data. Two physicists California, Carl Haber and Vitaliy Fadeyev of the Lawrence Berkeley National Laboratory are developing a non-invasive method of reading that is based on processing camera . The simulation of the reading done through detailed shots and a subsequent three-dimensional rendering of faithful models, makes it possible to simulate a sound sufficiently faithful to a traditional listening without the rough vintage pins can do any harm, being free from any contact reading physical. Moreover, thanks to the composition of images that is at the origin of the simulation is possible even listen continuously discs or cylinders that have been cut up into pieces, assembling the various components via software. In this way we could bring back to life many of the early recordings made of low cost materials or some of the earliest experiments of Thomas Alva Edison, now in tatters. The algorithm used automatically removes scratches, smudges and dust, simulating the movement of the stylus in the traces obtained with the resulting sound. Comparing the results obtained with the original playback, the quality and already excellent and the whole process could be speeded up, and even more refined with the development of machines dedicated to the purpose.