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NEw Grateful Dead 1973 release

Posted by simon wagstaff (A) on March 14, 2006 at 04:52:26

Not quite ready for release as of yet but looks very interesting. I have never heard of being able to adjust/correct speed fluctuations like this.I wonder what they use as a timing mark, motor noise?

Apparently this was posted on dead.net and then pulled as the set was
>>>> not ready yet. Here is the info as cut & pasted to DNC:
>>>>
>>>> “Winterland 1973,” will be a 9-CD package that covers every note from all
>>>> three nights of the November 9-10-11, 1973, weekend.
>>>>
>>>> All pre-orders of "Winterland 1973-The Complete Recordings" taken before
>>>> the
>>>> ship date will receive an exclusive bonus CD featuring the bulk of the
>>>> Grateful Dead's show in Cincinnati, OH, on December 4, 1973, including the
>>>> entirety of the second set and highlights from the first set.
>>>>
>>>> These two-track 1/4” tapes were originally recorded on a Nagra IV running
>>>> at
>>>> 7.5 inches per second by Bill Candelario (Kidd) as part of the normal tape
>>>> documenting done in 1973. Kidd employed a mic split which permitted a
>>>> different mix to tape than that to the PA system, with minimal processing
>>>> allowing the clearest possible signal path to tape.
>>>>
>>>> We have attempted to preserve this excellent recording by using current
>>>> technology to enhance its fidelity as never before.
>>>>
>>>> The first step in this process was to transfer the original analog master
>>>> tapes to a digital format. This was done by using a Pacific Microsonics
>>>> HDCD
>>>> A/D converter at the highest possible digital resolution, 192KHz/24bit (for
>>>> comparison, a standard CD is 44.1KHz/16bit).
>>>>
>>>> The resultant audio files were then sent via hard drive to Plangent
>>>> Processes in Nantucket, MA. Plangent Processes utilizes a novel proprietary
>>>> digital signal processing system called Clarity. The process analyzes the
>>>> tape, searching for artifacts of the recording stream that happen to
>>>> contain
>>>> highly accurate timing information, which then reveal the mechanical
>>>> imperfections of the original tape recorder’s performance as it was making
>>>> the initial master recording. To obtain this timing information, the
>>>> original transfers to digital actually had to be done with the master tapes
>>>> running at half speed, 3.75 inches per second.
>>>>
>>>> This information was then employed as a guide to gently but firmly correct
>>>> the data of the digital transfer such that the sonic performance in terms
>>>> of
>>>> speed, pitch and tempo was indistinguishable from the board output. In this
>>>> case the original 7.5 inches per second recordings contained significant
>>>> amounts of wow and flutter, as would be routine even in the professional
>>>> machine used to make these recordings. By undoing the wow and flutter we
>>>> can
>>>> now hear the performances in their original perfect pitch, and with
>>>> steadiness of rhythm and overall clarity intact.
>>>>
>>>> The performances were then mastered from these corrected audio files.
>>>> Slight
>>>> amounts of analog compression (through a Fairman Tube Master Compressor)
>>>> and
>>>> equalization (through a Sontec MES-432C Mastering Equalizer) were employed
>>>> when loading into the Sonic Solutions digital work station for final
>>>> assembling and editing. We are confident that you will find this
>>>> reproduction to sound better than any two-track recording of this vintage
>>>> you may have previously heard.
>>>>

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