From emarsh@ee.northvale.edu Tue Jan 10 18:12:00 1995
Path: ashpoly!cascade!bigsur!ee!emarsh
From: emarsh@ee.northvale.edu (Elaine Marsh)
Newsgroups: alt.conspiracy
Subject: [LAB GUIDE] Reproducing the Spectrograms & Ciphers in /forensics/
Message-ID: <1995Jan10.181200.5450@ee.northvale.edu>
Date: Tue, 10 Jan 1995 18:12:00 GMT
Organization: University of Northvale, Signal Processing Group
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A note on scientific method: we never ask anyone to take a decoded string
on faith. Every acoustic artifact referenced in Entries #01 through #28
can be tested interactively in the Web Audio Signal Decoder Lab
(/forensics/signal_lab.html) and the VT100 Demodulator (/forensics/):

  1. VIS-1200Hz SSTV DMA RASTER (rabbit_08_sstv_b2_schematic.mp3):
     Click Button 1 in /forensics/signal_lab.html to rasterize the memory
     anchors tokyo-garden-1420 (0x89B2B2D8) and siliconvalley-lab-1984
     (0x89B2D39A).
  2. BELL-103 110-BAUD AFSK PACKET (rabbit_09_bell103_relcom_packet.mp3):
     Click Button 2 to demodulate the 16-bit Feistel mask 0x3A5F relayed
     through Leningrad Relcom Node-08.
  3. 180-DEGREE PHASE-INVERTED VOCAL STEM (rabbit_10_phase_inverted_hart_stem.mp3):
     Click Button 3 and engage [DIFFERENTIAL PHASE NULL (L+R MONO)] to
     cancel the 330/495/990 Hz calibration triad and isolate the 750 Hz
     CW salt: 7704-AKASAKA.
  4. COYOACAN 1988 CASSETTE & 240.4 MS ORBITAL DELAY TAPES:
     Run 'KESTREL' in /forensics/ (or click the Kestrel Evidence buttons)
     to play and inspect /forensics/coyoacan_1988_node04_cassette.mp3 and
     /forensics/orbital_nodes_11_14_240ms.mp3 on the live oscilloscope!

-- 
Prof. E. Marsh, Signal Processing Group, U. of Northvale