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Playing Phonographf cylinders with the technology of the XXI-st century.

Playing Phonographf cylinders with the technology of the XXI-st century. Contactless recordplayer DiFiLTON-ARC kft. Pál Sztano the late chief audio restorer of the MTA-ZTI Music and Folklore Research Institute of the Hungarian Academy of Sciences. Phonograph cylinders.

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Playing Phonographf cylinders with the technology of the XXI-st century.

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  1. Playing Phonographf cylinders with the technology of the XXI-st century. Contactless recordplayer DiFiLTON-ARC kft.

  2. Pál Sztano the late chief audio restorer of the MTA-ZTIMusic and Folklore Research Institute of the Hungarian Academy of Sciences.

  3. Phonograph cylinders

  4. The advantages of contactless reproduction • The cylinders are not damaged. • Even damaged or broken cylinders may be read. • There are no reproduction problems caused by the contact of the pickup needle with the groove. • The large number of samples read, enables us to better reconstruct the original recording during processing.

  5. Traditional data acquisition • One sensor, one analogue reproduction chain • Optional digital phase: - A-D converter - Digital restoration

  6. Multi-sensor data acquisition • Many sensors, with as many analogue reproduction chains • A-D converters for each analogue channel • Digital preprocessing using digital data from each channel • Optional digital restoration

  7. The cross-section of the groovemeasured in pixels, 0,4 um

  8. Groove cross-section

  9. Surface view

  10. Experimental player

  11. The first optical sound recorded by Béla Bartók in 1915

  12. SZTANOGRAF

  13. Autofocus

  14. Automatic Groove tracking

  15. Video picture of the groove cross-section

  16. Image of a groove after preprocessing

  17. Recognition of faulty parts

  18. Reconstruction Parameters

  19. The sound of a Berlin cylinder without filtering. A recording of the Orchester Bummelmarsch made in about 1905(Needle Sztano1 Sztano2)

  20. of the Restoring System 20 samples/sec on Intel dualcore Pentium 3 GHz 1200x time at 12kSps Main Data of the Recording Equipment • 25 samples/sec PAL • 20 rev/hour • 480x time at 12kSps • ~1 TB / cylinder

  21. Restoring system 250 samples/sec on GRID system 48x time at 12kSps Enhancing the algorithm Targets Recording • 250 samples/sec • Adjustable lighting • 200 rev/hour • 48x time at 12kSps • ~0,05 TB/cylinder

  22. The best procedure abroad • Reconstruction of Mechanically Recorded Sound from an Edison Cylinder using Three Dimensional Non-Contact Optical Surface Metrology • V.A. Fadeyev and Carl Haber • Lawrence Berkeley National Laboratory

  23. Manno Sándor Gerencsér László Csetverikov Dmitrij Németh István Bisztray Frigyes Feketű József Méder István Torma Balázs Zalán Frigyes Thank you for your attentionMTA-SZTAKIDiFiLTON-ARC kft.MTA-ZTI

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