1. For many years I've been recording and archiving
concerts with pcm (digital) on videotape; finally I started looking for a replacement.
(The only formats I know of that have a proven track record are tape and vinyl,
DAT not included). I purchased a CD recorder (Philips CDR775, dual well, uses
consumer blanks) with the idea of recording a concert on 2 CDs. Transfer to a
computer would be at 5X to 10X.
However, when I checked the bit accuracy of a CD copy with
File Compare (Exact Audio Copy, at www.exactaudiocopy.de)
there were 32 repeated samples in the first few minutes, otherwise an exact copy.
(I wrote Philips with no response). I never used it for concerts, only copying
Eventually it expired and I bought a Sony RCD-W500C (also
consumer) and checked it and it failed completelyall the samples were different!
In despair I bought an HHB CRD-830 professional CD recorder
(uses computer blanks) and it failed too.
After some discussion and reflection I tried opening the respective
files (original and copy) in an editor and trimming the silence at the beginning.
Then the copies passedevidently the latency at the beginning of the copy
was more that File Compare could handle. Interestingly the HHB put some near full
amplitude spikes at the beginning of the file (copying via "Synchro"
Mode and an external CD player). However these are not audible on a CD layer becuse
of the unmuting time.
Do I trust the longevity of CDs such that I will archive ony
one copy on CD? Probably not.
2. For BAS members out of town we have a special
offer for Jazz lovers. A package of 30 Jazz CDs, randomly picked from Ira Leonard's
collection, for $22 including shipping in the USA. To order, send a check, made
out to "Boston Audio Society", to David Hadaway, POB 460, Rindge NH
03461. These were donated to the Society by Ira's brother, Joe Leonard.
President, Boston Audio Society
email me HERE