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I have many reservations on tc-04. It has very useful information but it was funded partly by commercial companies and it is evident in the conclusions it draws in certain areas. Read with caution. Shai בתאריך 14/08/12 5:08 PM, ציטוט Richard L. Hess: > Hi, Hugh, > > There is some information available for this. As far as treating > obstinate tapes, I am trying to maintain an up-to-date resource on the > subject. > > The best international standard so far that I've seen is IASA TC-04 > and it's available online. > IASA's TC04 on audio preservation is available online (and for a fee > in a print edition) > http://www.iasa-web.org/tc04/audio-preservation > > I introduced th concept of cold playback (and hopefully explained it > well) as well as attempted to cover the then state of the art in tape > degradation in my paper on tape degradation that was originally > presented at the Audio Engineering Society's 121st convention in > October 2006 in San Francisco was published in the ARSC Journal in the > Fall of 2008. It is available here: > http://www.richardhess.com/tape/history/HESS_Tape_Degradation_ARSC_Journal_39-2.pdf > > > I attempt to keep a current (as we know it here on this and other > lists) log of what tapes degrade in what manner and how to recover them. > http://richardhess.com/notes/formats/magnetic-media/magnetic-tapes/analog-audio/degrading-tapes/ > > > There may be specific applications to various scenarios, try the > search box. I think there are now over 100 pages there--both static > and in the blog. > > For squealing Shamrock, I have a specific article on another method of > recovery: > http://richardhess.com/notes/2007/11/08/success-with-squealing-shamrock-031-tape/ > > > Finally, there is a blog category tag that you might wish to browse. > The categories are listed below the static pages in the right sidebar. > http://richardhess.com/notes/category/archive-operations/tape-aging/ > > Also, to further Shai's comment, even people who would be competitors > on the same continent (and even the same time zone) while a business > was on a growth curve tend to band together to solve clients' > problems. We all know that there is more work out there to do than can > be done by all of us put together --- if it can be funded. While there > is much overlap among tape restoration folks, there is also a good > deal of specialization. One great example is that while Steve > Puntolillo and I are a day's drive apart and we overlap in many > formats, we both are really aiming in different directions and at > different markets. He is focused on doing multi-track masters. While I > can do many (but not 2-inch), I focus on two-track mixed masters and I > feel an important calling to preserve oral history--especially that of > vanishing cultures, of which we have too many here in Canada. > > Cheers, > > Richard > > > > On 2012-08-14 8:16 AM, Hugh Paterson III wrote: >> Shai, >> Is there a hand book for this kind of knowledge? >> >> - hugh >> >> > -- בברכה, שי דרורי מומחה לשימור והמרה של אודיו וידאו וסרטים 8-35 ממ.