Capitol Theater, Port Chester, NY
Summary (download all files)
SBD -> Dolby A Reel -> Dolby A decode -> DAT -> Sound Forge NR?-> CD-R; via Orf; disortion removed digitally (see notes); more info comparing Orf's NR to the WBOTB version; note the (possibly reextracted?) Orf version went to abgd 12/99 via D. Hollister, J. Sachs (md5s shown as "abgd", kindly provided by Eric Noon: note 2 versions- abgda, posted to abgd 1/19/00, has d2t2 sig different from Eric's abgdb, which he generated himself for the set- not sure which is correct)
Textdoc (download)
Grateful Dead
February 18, 1971
Capitol Theatre, Port Chester, NY
SBD -> Dolby A Reel -> Dolby A decode -> DAT -> Sound Forge NR -> CD-R
The Sound Forge noise reduction was used to attenuate a very narrow
frequency band (in the vicinity of 8000 Hz) which was present as
interference on the original reels. See my notes below for details.
Disc 1
Set 1
1. Bertha (7:13) *
2. Truckin' (11:03)
3. It Hurts Me Too (7:42)
4. Loser (8:21) *
5. Greatest Story Ever Told (3:45) * >
6. Johnny B. Goode (3:39) *
7. Mama Tried (3:29)
8. Hard To Handle (8:01)
Disc 2
1. Dark Star > (7:03)
2. Wharf Rat * > (7:21)
Set 2
3. Dark Star > (7:14)
4. Me And My Uncle (4:04)
5. Lucky Lager Dance Time (2:39)
6. Casey Jones (6:10)
7. Playing In The Band (5:09)
8. Me And Bobby McGee (6:06)
Disc 3
1. Candyman (9:46)
2. Big Boss Man (5:40)
3. Sugar Magnolia (8:29)
4. St. Stephen > (5:57)
5. Not Fade Away > (4:33)
6. Goin' Down The Road Feeling Bad > (5:01)
7. Not Fade Away (3:59)
8. Uncle John's Band (6:44)
* first performance
The original reels of the Port Chester run of '71 were audibly
tainted due to a cable problem. The result is a tone which hovers
around 8000 Hz with an amplitude of about +20 dB above the noise
floor. This translate to a very annoying pitch, especially during quiet
sections, which is in the old-tv-tube or lousy-hard-disk or maybe even
the-sound-you-hear-after-you-slam-your-head-against-a-concrete-wall
class of 'whine'. Because this interference is 'monochromatic' it's
easy to get rid of if you have the processing power and a quick
FFT algorithm. I used the filter-shaping capabilities of the Sonic
Foundry Noise Reduction Plugin to tailor a very narrow notch filter
which attenuated the interference without affecting the rest of the
signal. And it's all done in the digital domain. Huzzah!
As a side note, I actually ended up crafting many filters to process
these shows. The frequency of the interference actually drifted anywhere
from 7700 to 8100 Hz during a given show. This was probalby due to a
slightly wandering reel speed. It made my work harder but when I tried
a much wider filter I started to be able to hear the attenuation in the
music. The filters generally go like this:
25 dB /- - - - - - - -\
/ \
/ \
0 dB | |
7830 7900 7970
The end result is no more annoying whine!
I also removed some of the nasty mic feedback in the 2/18/71 Bertha
using this type of filter.
Leigh Orf <orf@mailbag.com>
Media Size
0
Media Size Uncompressed
0
SHN Disc Count
0
WAV Disc Count
3
Date Circulated
6/2/99
Entered By
Dr.Unclear
Created At
Wed Apr 04 2001 18:10:56 GMT+0000 (Coordinated Universal Time)
Updated At
Tue Sep 22 2009 16:09:11 GMT+0000 (Coordinated Universal Time)
Checksums
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st5 (download)
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