AES E-Library

Signal Processing Methods for the Recovery of Audio from Early Acoustic Recordings, Measured Via Non-Contact Optical Sensor

A non-contact method for the recovery of audio signals from early acoustic cylinder recordings is presented. The cylinder surface is scanned via optical displacement sensor, capable of submicron axial resolution. Sound recovery is achieved by estimating the trajectory of a playback stylus over the measured surface. The processing methods required to extract audio from a discrete height map are described. The signal to noise ratio of the extracted signal as a function of position across the groove cross-section is examined, for a Blue Amberol cylinder, (circa 1912).

Authors: Boltryk, Peter J.; Hill, Martyn; McBride, John W.; Nascè, Antony J.
Affiliation: University of Southampton
AES Conference:31st International Conference: New Directions in High Resolution Audio (June 2007)
Paper Number:7 Import into BibTeX
Subject:High Resolution Audio

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 31stPapers)   /31/aes31-000024.pdf

Start a discussion about this paper!