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Performing Arts Collection:
Preservation of Sound Recordings
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Davidson Library's Special Collections Department has an audiovisual preservation to preserve the unique audiovisual materials held by the library and migrate them to digital formats. often old and fragile audio recordings in the collections. The studio has equipment to playback every format in the Library's collections including cylinders, discs and open reel audio tape as well as modern formats such as DAT and CDs.
Equipment in the studio has been chosen to provide the highest quality playback while remaining faithful to the original sound source. Some of the features that allow high quality transfers are the use of balanced audio signals and balanced AC power throughout. While common in professional recording studios, this is less common in archives.
The library has an active an ongoing preservation program
and dubs hundreds of hours of unique audio recordings every year to more
stable media such as recordable Compact Discs (CDR). Some audio files
are also stored online. Additionally, all commercial 78 rpm recordings
are copied onto CDR as patrons request items. This ensures that the recordings
in demand and most likely to be unavailable elsewhere are copied onto
a stable format.
Studio Equipment:
Open reel playback:
- Studer A807 (1 quarter track and 2 half track)
- Otari MX5050BIII
- Revox B77
- Teac A 4010S (quarter track)
Audio disc playback:
- Thorens TD520 16" turntable
- Technics/KAB SL1200 turntable
- Technics/Esoteric Sound turntable
- KAB Souvenir EQS MK12 phono preamplifiers and EQ
- Owl 1 preamp and EQ
- Esoteric Sound Re-Equalizer
Other playback equipment:
- Archeophone #4 (Cylinder playback)
- Marantz PMD502, PMD510, PMD511 cassette and PMD 321CD players
- Sony PCM R500 DAT
Converters and Digital Audio Workstations:
- Prism Dream 8 channel ADA
- CEDAR 2 channel ADA
- CardDelux sound cards
- Three digital audio workstations; 8 channel, 4 channel and 2 channel; with Wavlap and Sound Forge.
Noise supression and equalization:
- CEDAR DCX Declicker, CRX Decrackler, DHX Dehisser, BRX debuzzer, AZX Azimuth corrector
- Packburn 323A Audio Noise Supressor
- SAE 5000 Impulse Noise Reduction
- Behringer 8024 Digital EQ
Video
- Sony UVW-1400 BetaSP
- Sony VP-9000 Umatic
- Sony SVO 2100 SHVS
- Panasonic AG5210 VHS
- DPS-290 TBC
- Tektronix waveform monitor and vectorscope
Miscellaneous equipment:
- Keith Monks Audio Labs Record Cleaning Machine
- Furman IT-1220 isolation transformer
- Alesis RA 100 power amp and monitor one monitor
- Olympus microscope
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