Exotic Spectrum Usage Identification Group

Research in "invisible" threats to societal health


Info | Methods | Research

TV Study Method and Scripts

January 4, 2022 | Methods

This study makes use of a number of software and hardware tools to collect and process data. The tools used are seperated by phase of study:

  1. Identification of unique sub and above audible range that have been documented in published patents to exhibit nervous system response:
    1. Debian Linux box.
    2. ATSC with record function for the collection of TV programming samples over the digital airwaves.
    3. SoX used with scripts for charting below 20 and below 100Hz as well as above 18kHz.
    4. Gummi LaTex editor for transcribing in TeX format then to PDF.
    5. ffmpeg for conversion of media as well as frequency band high and low pass, before using with SoX.
  2. Identification of correlation between audio and placebo audio (below and above audio removed) with frontal lobe EEG data:
    1. GNUplot for charting of the collected EEG data.
    2. MUSE EEG headset.
    3. Android Software: Mind Monitor, for connected EEG band to Android phone via bluetooth for real time data collection from 4 probes of the frontal lobe.

Scripts so far:

  1. Draft of script to render audio data to FFT charts using the -spectrogram function of SoX:

#!/bin/bash
#sox $1 -S -n spectrogram -y 400 -X 24 -h -o $1spec_full_c.png
#display $1spec_full_c.png

sox $1 -S -n spectrogram -y 400 -X 24 -m -o $1spec_full_m.png

#display $1spec_full_m.png

#-t raw -s -w -c 1 -

sox $1 -S -c1 $1spec_below.wav sinc -100.0 rate 200
sox $1 -S -c1 $1spec_above.wav sinc -22k-18k bandpass 18k-20k

#| sillyscope --range=2k-20k

#highpass -1 -k 18
#sox $1 -t raw -s -w -c 1 - lowpass 100 -o $1spec_below_m.wav
#sox $1 -t raw -s -w -c 1 - highpass 18000 -o $1spec_above_m.wav

#sox $1 spectrogram -y 400 -X 24 -m -o $1spec_above_m.png
sox $1spec_below.wav -S -n spectrogram -y 400 -X 24 -m -o $1spec_below_m.png
sox $1spec_above.wav -S -n spectrogram -y 400 -X 24 -m -o $1spec_above_m.png

#display $1spec_below_m.png

#sox $1spec_below.wav -S -n spectrogram -y 400 -X 24 -h -o $1spec_below_c.png
#display $1spec_below_c.png

#sox $1spec_above.wav -S -n spectrogram -y 400 -X 24 -h -o $1spec_above_c.png
#display $1spec_above_c.png
#display $1spec_above_m.png
#sox mymusic.mp3 -n spectrogram -L -R 50:8k