ktesibios
Worthless Aging Hippie
- Joined
- Feb 23, 2002
- Messages
- 1,493
Oh well. I guess I can live with that. Anyway back to business.
As I've said before people are listening less and less to debunker rubbish and are starting more and more to use their own logic and senses.
So on that note I recommend for any reader to listen to the two short videos above and using their own best judgement assess in which video the audio has been tampered with.
I say that the clean and full audio in the video marked 'authentic' has been clearly and obviously degraded and degenerated in the video marked 'fake'. This 'fake' with the explosions removed is the one the government say is the true audio.
So, bill, how do you propose to "remove" the sound of explosions from a recording without creating artifacts which will be painfully obvious to any lnowledgeable listener.
I have successfully removed clicks from a recording (by waveform drawing in Sound Designer II) and a feedback (what our Brit cousins call "howlround" from a live recording (the feed was close enough to a pure tone that I could tune a narrow notch filter to it and apply the filter only to the part of the recording where the feedback took place).
An explosion, however, is neither a simple impulse, like the clicks I took out, so redrawing the waveform isn't gonna work, nor is it narrowband enough for filtering to do the job. The only thing I can think of would be to cut the entire track at the beginning and end of the explosion sound and splice the ends together. That would be guaranteed to produce an obvious discontinuity in the background sound.
Using one's own "senses and logic" is all very well, but you leave out a critical ingredient: knowledge. Because you have none, you can blithely handwave up scenarios which make hose of us who do know what we're talking about wish for an automatic facepalm machine.
Here's an experiment which 240-185 might want to try (I aim to try it tomorrow, assuming I can get access to the DAW at the other studio where I work):
take the second explosion which you extracted from the video.
In a multitrack workstation, goodge it forward and back until it's lined up with the first explosion to within less than a millisecond.
Invert the polarity of the second explosion and sum it with the first. If the two are in fact identical, the explosion will be largely cancelled out, leaving the background.
Good cancellation would be proof that the two explosions are multiple instances of the exact same sound and consequently the product of fakery.