So far, the most interesting aspect of this thread is the spelling errors,
e.g. "nothing to loose", "won't effect". I hope they are merely
orthographical and not due to impoverished vocabularies.
Never having had to desiccate a DASH tape, I was pleased to learn that 118F
produced a satisfactory playback. 130F for eight hours was the rule of
thumb in use when I last concerned myself with the process. Sony DASH tape
was highly prone to digital faults. I remember doing a labor-intensive new
mix for Sony Classical in 1992 of the Bernstein/NYPO Liszt *Faust
Symphony*on a Friday, only to return to it on a Monday and discover
unrecoverable portions that had developed over the weekend. It was good for
billable hours, I guess, but it only made me hate tape even more.
On Fri, Feb 3, 2012 at 7:22 AM, Tom Fine <[log in to unmask]>wrote:
> I'm sure Richard Hess will weigh in on this, but my understanding of the
> mechanism of tape-baking is that you need a minimum temperature for there
> to be any useful effect. 118 degrees for that time period is probably in
> the useful range. Does the DASH standard have a fairly robust
> error-correction scheme? I would think if it does, minimal physical changes
> brought about by tape baking once won't effect playback.
> -- Tom Fine
> ----- Original Message ----- From: "Corey Bailey" <[log in to unmask]
> To: <[log in to unmask]>
> Sent: Friday, February 03, 2012 2:27 AM
> Subject: [ARSCLIST] Baking Digital Audio tapes
> Hi All,
>> I thought the members of this list might find this interesting:
>> Recently, some 1/2-inch Sony DASH (3324) format tapes were shipped from
>> the UK to the Warner Bros. Sound Transfer Dept in Burbank, CA. The tapes
>> would not play and exhibited Sticky-Shed Syndrome.
>> I was asked if I thought it would be safe to bake the tapes. My response
>> was that it could be risky and if we were to attempt it, the tapes should
>> be baked at a much lower temperature for 24 hours or so. It was decided to
>> try my suggestion since there was nothing to loose at this point.
>> The details:
>> 3 reels of Quantegy 1/2-inch 467 Digital audio tape, originally recorded
>> in August of 1999.
>> 2 reels of Quantegy 1/2-inch 467 Digital audio tape, originally recorded
>> in May of 2004.
>> The tapes were baked for 16 hours at 118 degrees F. and then left in the
>> oven for 6 additional hours as the oven cooled. The decision was made to
>> end the baking at 16 hours because the Transfer Dept. Supervisor wanted to
>> test the results to see if there was any improvement that might warrant
>> further baking. The first tape tested played just fine so each tape was
>> tried in succession with the same positive results.
>> Corey Bailey Audio Engineering
Dennis D. Rooney
303 W. 66th Street, 9HE
New York, NY 10023