Unexplainable audio time phenomenon with manifestation on external YouTube video seconds later

[Danley]

Dear Avalonians,

This is my first thread here!

On last Monday, while watching a Stewart Swerdlow Video on Youtube I´ve made a very unusual experience.
In approximately at around 37m40s into the video our german shepard Alaska walked up to our front door and reacted like, someone is out there and she barked once.
Maybe 3-5 seconds later the exact same barking sound appeared in the video (time mark: 37m48s)
What do you think about this??
Unfortunately I cannot prove the whole incident, just the barking sound in the video, which is not so easy to explain.
I'm still flashed from this experience! :-)
By the way: I already wrote to Stewart, hoping to get an answer, if there was a dog in the conference room.

Here is the link:
https://youtube.com/watch?v=uEEp4-BE68k&t=37m48s

Best Wishes to you all!
Daniel from Switzerland

[Bill Ryan]

.
Hi there, Daniel, and Welcome to the forum.

Dogs (and cats) are very psychic sometimes! No doubt of that.

It's also possible that your dog heard something on the video that humans can't hear — but was still there in the real-world signal. Then, a few seconds later, the humans heard it, but it was actually the second occurrence of something your dog picked up the first time, before we did.

A simple test would be to download it and play that section again, watching your dog carefully (and making sure she was paying attention ). If her ears prick up at that same spot (where there seems to be nothing), it's something there that she can hear but we can't.

[conk]

Welcome! Is that you with the Strat (?) ?

[Danley]

Hi, yes it´s me with my Line 6 Variax JTV69!

[Bob]

Maybe 3-5 seconds later the exact same barking sound appeared in the video (time mark: 37m48s)

What do you think about this??

Hi Daniel - Welcome to Project Avalon !

I've heard that phenomenon specifically when audio tape was used as the original medium, quite possibly video tapes can exhibit something like that as well.

The phenomenon: A loud sound somehow seems to be over tracked a few seconds before the "loud sound". Sharp risetime (like snaps, barks, crashes, snare) sounds seem to be able to do it the most from my experience. (I've been doing audio since the mid 60's).

When I went to fully digital recording without any tapes in the mix, the phantom sounds went away. I suspected that the tape itself somehow carries a strong pattern, which can be transferred as a "ghost image" to the take-up reel.

So for a few moments before the actual sound, the "ghost image" is coming from a type of magnetizing the tape on the take-up reel, by that strong sound.. Kinda like how a magnet can magnetize a screwdriver secondarily, when the screwdriver was never magnetized originally. Audio tape relies on being able to be EASILY magnetized by a magnetic field.

The sharp sound can then as it is rolled onto the takeup spool, the underneath already recorded layers can have that strong pattern transferred. (without needed a recording head to do it).

I would suspect a really HOT drive level on the recording head and certain brands of audio tape would be more susceptible to "ghosting" (transfer of hot sharp rise time signals to the tape on the take-up reel)..

(PS - the "ghosting" phenomenon (looking that up for similar effects heard) is reported as being very common on audio reel to reel, the pre-ghost. Some folks have said how the audio tape is stored and the tension on the take-up reel has a lot to do with that "printing" of the sharp risetime audio on subsequent layers on the reel. It's a problem with analog reel to reel recording..)

[ponda]

Posted by Danley (here)
Dear Avalonians,

This is my first thread here!

On last Monday, while watching a Stewart Swerdlow Video on Youtube I´ve made a very unusual experience.
In approximately at around 37m40s into the video our german shepard Alaska walked up to our front door and reacted like, someone is out there and she barked once.
Maybe 3-5 seconds later the exact same barking sound appeared in the video (time mark: 37m48s)
What do you think about this??
Unfortunately I cannot prove the whole incident, just the barking sound in the video, which is not so easy to explain.
I'm still flashed from this experience! :-)
By the way: I already wrote to Stewart, hoping to get an answer, if there was a dog in the conference room.

Here is the link:
https://youtube.com/watch?v=uEEp4-BE68k&t=37m48s

Best Wishes to you all!
Daniel from Switzerland

Interesting with the sound of the dog barking.

Could be some type of synchronicity. They can be rather strange sometimes.

[Danley]

Hi Everybody, thank you very much for your answers.
I just found out, that Stewart owns dogs and I also watched a podcast of him, where you can hear one of his dogs or maybe both. But I´m not sure, if the dog barking sound is one of his dogs in the audience!? :-/
Here is the video link:
https://youtu.be/_xHg4hAOxmE?t=437
sounds damn similar

Bye Daniel

[Nick Matkin]

Posted by Bob (here)

Maybe 3-5 seconds later the exact same barking sound appeared in the video (time mark: 37m48s)

What do you think about this??

Hi Daniel - Welcome to Project Avalon !

I've heard that phenomenon specifically when audio tape was used as the original medium, quite possibly video tapes can exhibit something like that as well.

The phenomenon: A loud sound somehow seems to be over tracked a few seconds before the "loud sound". Sharp risetime (like snaps, barks, crashes, snare) sounds seem to be able to do it the most from my experience. (I've been doing audio since the mid 60's).

When I went to fully digital recording without any tapes in the mix, the phantom sounds went away. I suspected that the tape itself somehow carries a strong pattern, which can be transferred as a "ghost image" to the take-up reel.

So for a few moments before the actual sound, the "ghost image" is coming from a type of magnetizing the tape on the take-up reel, by that strong sound.. Kinda like how a magnet can magnetize a screwdriver secondarily, when the screwdriver was never magnetized originally. Audio tape relies on being able to be EASILY magnetized by a magnetic field.

The sharp sound can then as it is rolled onto the takeup spool, the underneath already recorded layers can have that strong pattern transferred. (without needed a recording head to do it).

I would suspect a really HOT drive level on the recording head and certain brands of audio tape would be more susceptible to "ghosting" (transfer of hot sharp rise time signals to the tape on the take-up reel)..

(PS - the "ghosting" phenomenon (looking that up for similar effects heard) is reported as being very common on audio reel to reel, the pre-ghost. Some folks have said how the audio tape is stored and the tension on the take-up reel has a lot to do with that "printing" of the sharp risetime audio on subsequent layers on the reel. It's a problem with analog reel to reel recording..)

That's a good explanation. It's known in sound engineering circles as 'print through' and on analogue tapes can be before and after the loud noise. It actually occurs on the take-up reel where the loud sound (i.e. the strongly magnetised section of tape) is sandwiched between the layer before and the layer after, thus 'impregnates' those two layers of tape in close contact, especially if the spool is tight and/or it has been in store for some time. When you time it you'll find it is exactly the time one spool unwinds before or after the original sound.

There's an exactly equivalent effect on badly engineered analogue records.

It is possible that this is what happened in this case if the Youtube video was from an old analogue recording, although I'm not sure if the analogue sound on video tape is always laid down the same way as on an analogue sound-only tape, so I don't know if audio print through is possible on video tape. Need some VT engineers to verify.

Nevertheless, it's an interesting story.