Reproduction of Sound Signal from Gramophone Records using 3D Scene Reconstruction

Preserving invaluable historic recordings has drawn some interest because the traditional record playback system wears out the record gradually. This paper presents a non-contact method to reproduce sound signal from gramophone records using 3D scene reconstruction of the micro-grooves cast on a record surface. Because of the unique shape of the microgroove, a planar assumption was made during scene reconstruction and recovered surface orientation was used to reproduce the sound signal. A robust estimation method was developed to reduce noise effects. Results from synthetic data were shown to test the technique.