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Important factors to consider in any audio preservation/migration project
PLAYBACK EQUIPMENT
Make the original analog recording sound the best it possibly can.
Use high quality, regularly maintained playback equipment to play the original recording. Every piece of playback equipment used at Osiris Studio was chosen for its best in class performance in audio re-production. In some cases modifications have been made to an already outstanding playback device to further improve the audio quality.
DIGITAL CONVERTER
Capture the best, most accurate digital representation of the analog sound.
Often overlooked, this is one of the most important tools in the preservation process. It is this single device that captures or “records” the analog sound in a digital format. Digital converters can range in price from $20 to $20,000, and as those prices indicate all converters are not created equally. We use the Prism ADA-8XR. Prism makes what is considered to be some of the most accurate analog to digital converters available in the professional audio world.
Osiris Studio takes the responsibility of converting their client’s audio artifacts to a digital format very seriously. Usually this is a onetime process for analog media reaching the end of its life. Therefore it is critical that the analog to digital conversion process be performed by only the best converter available. The Prism ADA-8XR is nothing short of state-of-the-art in this regard.
It’s also worth noting that the Library of Congress is currently using the ADA-8XR in their new Culpeper, VA facility and EMI recently chose the ADA-8XR to digitize the entire Beatles catalog for preservation and re-issue.
QUALITY CONTROL
Make sure everything is right.
What good are great sounding digital files if the file names don’t accurately reflect the content? We regularly deal with large projects that end up producing hundreds or thousands of files. If 1 or 2 of those files ends up labeled wrong or recorded incorrectly, the integrity of the project could be in question. Quality control is essential. Osiris Studio has QC procedures in place throughout the transfer process that will ensure usable, accurate, complete sound files and the best possible representation of the analog source in digital format.
OUTPUT
Store it on something useable and durable.
If you plan to have your final project delivered on optical media (CD or DVD), there are two things you need to consider. First, the media itself; Osiris Studio uses Taiyo Yuden and MAM-A discs exclusively. Both are considered reference, industry standard media. Second, labeling of the discs themselves; all of our discs are printed using a Rimage Everest III color thermal disc printer. Aside from looking truly outstanding, the color thermal printed discs offer many advantages over other forms of labeling.
For example, most guidelines indicate that using a Sharpie or felt tip marker is an acceptable practice, but you’re limited to marking on the clear center hub of the disc only; writing anywhere else on the disc may eventually damage the surface. Ink jet printing really isn’t suitable for archival work; it’s not permanent and can easily smear. Stick-on labels are a big no-no. The adhesive part of the label will eventually deteriorate and damage the disc surface. But with discs printed using the color thermal process you get:
- Uniform, professional looking discs.
- The ability to print the maximum amount of information on the disc surface clearly and legibly.
- Maximum durability. The color thermal printing process adds another protective layer to the disc surface, the most vulnerable side to scratching.
- Waterproof discs. Actually, just for the heck of it we put a few of these discs in the dishwasher (with the drying cycle on) and they came out looking and functioning perfectly.
External hard drives are great too; they’re very inexpensive and easy to use. We recommend going with a model that has a RAID feature, which means that there are 2 hard drives in the enclosure that are mirror images of each other. If one drives fails the other will still safely contain your audio files. It’s still a good idea though to back up the files on the external drive to another drive, local server or remote server just to be safe.
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