* To visit the full conference website click here!
Back To Schedule
Sunday, September 17 • 12:30 - 14:30
Technical Committee, 2 (open meeting)

Sign up or log in to save this to your schedule, view media, leave feedback and see who's attending!

Paper 1 - Saphir : using coloured light for recovering audio signal from challenging delaminated lacquer disk records
Conventional mechanical playback cannot be used in the case of damaged lacquer audio disk records, used between 1930 and 1960 by a large number of radio broadcasters and archives. INA has developed optical tools and software for the recovery of such records.
The Saphir scanner uses an original approach, by casting a structured coloured light beam onto a small area of the disk surface, and uses a standard video sensor for acquiring rings of pictures. From the collected pictures, the software allows to decode a wide range of audio disks recording types, from early Berliner to stampers and 33rpm vinyl disks, but its strength is at recovering the signals from lacquer recordings, even severely damaged (broken, cracked, delaminated). Extreme examples with numerous cracks and missing flakes will be demonstrated.
We will present our efforts towards replicating the scanner, making the tools available to INA, other audio archives, and service providers, with the objective of opening up the potential for recovering this highly endangered part of the audio heritage.

Paper 2 -  Applied TC04 –Equipment Specifications and Measurement Standards
 The TC04 provides the basis for almost every audio digitization project in the international archival community. It provides guidance in many aspects and also provides minimum specifications for audio equipment to be used for digitization. For economic, informational or technical reasons these minimum specifications are often not easily met.
In practice, even if a specification given by an equipment manufacturer meets the high demand of TC04, after many years of using the equipment, compliance of the criteria to specification has to be checked. This has to be done by standardized measurement, but the measurement standards found in TC04 are sometimes not stated in precise and comprehensible manner.
My presentation simply wants to draw attention to this possible imperfection of the TC04, show some examples and discuss ideas on how the potential for a departure from TC04 in certain situations can be reduced.

avatar for Lars Gaustad

Lars Gaustad

Head of moving image preservation, National Library of Norway
Lars Gaustad is head of moving image preservation at the National Library of Norway. The library holds the heritage collection of moving images in Norway as well as being responsible for handling the legal deposit of film and television. He has chaired the Technical Commission of... Read More →

avatar for Jean-Hugues Chenot

Jean-Hugues Chenot

R&D project manager, INA
Jean-Hugues Chenot received Engineering degrees from French Ecole Polytechnique and Ecole Nationale Supérieure des Télécommunications. He joined INA in 1988 where he first developed software for 3D scanning and modelling and virtual studios projects. He is now manager of the... Read More →
avatar for Oliver Danner

Oliver Danner

Since 2010 Oliver Danner preserves audio media for the German federal film archive and as freelance service. He’s been exploring the field of sound engineering for more than 23 years and holds an MA degree in conservation and restoration of audiovisual cultural assets since 2015... Read More →

Sunday September 17, 2017 12:30 - 14:30 CEST
Ethnologisches Museum, Room 2 (ground floor) Takustraße 40, Berlin, Germany