Grateful Dead 2/18/1971 Capitol Theatre, Port Chester, NY
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One of my favorite runs, lots of firsts. Only change I've made is converting shn to flac.<br />
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<br />
Grateful Dead<br />
February 18, 1971<br />
Capitol Theatre, Port Chester, NY<br />
<br />
SBD -> Dolby A Reel -> Dolby A decode -> DAT -> Sound Forge NR -> CD-R<br />
<br />
The Sound Forge noise reduction was used to attenuate a very narrow<br />
frequency band (in the vicinity of 8000 Hz) which was present as<br />
interference on the original reels. See my notes below for details.<br />
<br />
Disc 1<br />
<br />
Set 1<br />
1. Bertha (7:13) *<br />
2. Truckin' (11:03)<br />
3. It Hurts Me Too (7:42)<br />
4. Loser (8:21) *<br />
5. Greatest Story Ever Told (3:45) * ><br />
6. Johnny B. Goode (3:39) *<br />
7. Mama Tried (3:29)<br />
8. Hard To Handle (8:01)<br />
<br />
Disc 2<br />
<br />
1. Dark Star > (7:03)<br />
2. Wharf Rat * > (7:21)<br />
Set 2<br />
3. Dark Star > (7:14)<br />
4. Me And My Uncle (4:04)<br />
5. Lucky Lager Dance Time (2:39)<br />
6. Casey Jones (6:10)<br />
7. Playing In The Band (5:09)<br />
8. Me And Bobby McGee (6:06)<br />
<br />
Disc 3<br />
<br />
1. Candyman (9:46)<br />
2. Big Boss Man (5:40)<br />
3. Sugar Magnolia (8:29)<br />
4. St. Stephen > (5:57)<br />
5. Not Fade Away > (4:33)<br />
6. Goin' Down The Road Feeling Bad > (5:01)<br />
7. Not Fade Away (3:59)<br />
8. Uncle John's Band (6:44)<br />
<br />
* first performance<br />
<br />
The original reels of the Port Chester run of '71 were audibly<br />
tainted due to a cable problem. The result is a tone which hovers<br />
around 8000 Hz with an amplitude of about +20 dB above the noise<br />
floor. This translate to a very annoying pitch, especially during quiet<br />
sections, which is in the old-tv-tube or lousy-hard-disk or maybe even<br />
the-sound-you-hear-after-you-slam-your-head-against-a-concrete-wall<br />
class of 'whine'. Because this interference is 'monochromatic' it's<br />
easy to get rid of if you have the processing power and a quick<br />
FFT algorithm. I used the filter-shaping capabilities of the Sonic<br />
Foundry Noise Reduction Plugin to tailor a very narrow notch filter<br />
which attenuated the interference without affecting the rest of the<br />
signal. And it's all done in the digital domain. Huzzah!<br />
<br />
As a side note, I actually ended up crafting many filters to process<br />
these shows. The frequency of the interference actually drifted anywhere<br />
from 7700 to 8100 Hz during a given show. This was probalby due to a<br />
slightly wandering reel speed. It made my work harder but when I tried<br />
a much wider filter I started to be able to hear the attenuation in the<br />
music. The filters generally go like this:<br />
<br />
25 dB /- - - - - - - -\<br />
/ \<br />
/ \ <br />
0 dB | |<br />
7830 7900 7970<br />
<br />
The end result is no more annoying whine! <br />
<br />
I also removed some of the nasty mic feedback in the 2/18/71 Bertha<br />
using this type of filter.<br />
<br />
Leigh Orf <orf@mailbag.com><br />
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