I understand how much fun it is to mess around with audio editors (it's how I got my start 16 years ago in this field) but you are a bit out of your
realm with regard to analysing and interpreting representative audio data with respect to EM (radio) wave transmissions. What you and many in the
general public do not understand is that an EM or Electromagnetic wave is not a sound wave and therefore cannot be treated as such. The .wav file you
are using is an audio representation
of an EM (radio) wave. It is NOT
a true audio source file.
Taken from www.aoc.nrao.edu...
"No scientific knowledge would be gained by converting the radio waves received by our radio telescopes into audible sound. If one were to do this,
the sound would be "white noise," random hiss such as that you hear when you tune your FM radio between stations."
This is for the most part true but there is one use for audio analysis. Please see my previous post for this explanation:
There is no "primary or secondary" signals here. This is not the original EM (radio) signal data which one needs to perform critical Radio
Spectrometry analysis. Unless what you meant was that it looks like there are two source frequencies within this recording. As you probably know,
record a guitar and a bass onto one track and you will see one waveform in your editor from two sources and can remove (filter) certain frequencies to
enhance the desired instrument recorded (terminology is critical in analysis reports). This is the less sensational fact. There is NOT some hidden
"signal" as you imply.
But again, I want to stress, this is neither here nor there as this is not a true audio source. The only analysis that can be performed on this source
is for pattern detection. You were correct that there is a repeating waveform within this file. A repeating square wave @ 703Hz after the EM wave was
demodulated from the 1428MHz signal. A square wave is typical of CPU clock EM interference in radio wave observation.
Originally posted by crisko
Truely a mystery!! Please compare pics if you are confused.
I use this software on a daily basis, and this is the first time I have encountered such a thing.
I will be spending considerable processing power over the next 24 hours filtering out the primary and resolving the secondary. Thats where the fun
There's no mystery...it's simply the limitation of your equipment. I dumped this into my rigs and did 6 pitch shifts at each location referencing
the envelope in your 2nd screenshot. Performed as expected. No problems.
And you mention "its gonna take 7 hours for rendering to be complete!" Something is wrong with your equipment or software configuration! It took 10
minutes total with .56 to 1.3 seconds of processing for each rig to filter out everything and expose the square wave.
22050Hz/8bit Source File -> ProTools HD
22050Hz/8bit Source File -> Apogee 1000 DCs -> SonicSolutions
22050Hz/8bit Source File -> Apogee 1000 DCs -> DC LIVE/Forensics Version 5
SonicSolutions System w/ "NoNoise" Filters (G4 Dual 1.25GHz/Filtering Rig)
Digidesign ProTools HD 192 System (G5 Dual 2GHz/Source rig)
DC LIVE/Forensics Version 5 System (Custom built 3E GHz Pentium/Filtering rig)
AnalogPrecision SYS-2722 Audio Test and Measurement System
Motu Digital Performer Triggering
Genelec 1031A and 1039A
Loaded source @ 192kHz to preserve integrity
NoNoise Processing removing voltage noise and "clicks"
Compression triggering on broadband noise (if any)
FFT analysis for patterns:
Main Reference Catagories: Electrical, Computer.
Sub-Reference Catagories: EMI, RFI, Voltage.
But AGAIN...this is practically moot as there is only one process that is relative to this audio representation...and it's NOT speeding up/slowing
down/pitch shifting the audio to find the hidden John Lennon message. It's pattern analysis PERIOD!
PLEASE READ AVAILABLE INFO CAREFULLY and more importantly RESEARCH your data if you are going to post technical information here. Incorrect data
hinders the discussion!
One last time for the record:
It is not an actual sound coming from space but an EM wave from unknown origin (earth or space) demodulated into a representative audio signal and
there has been no confirmation of this signal.
[Edited on 14-5-2004 by antipigopolist]