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jimmc3rd
Veteran


Joined: 01 Aug 2015
Posts: 97
rmartins wrote:
So, how do you actually leave rider mail, do you call the number and leave an audio message? Do you send an SMS? Youtube comment? Maybe someone should leave a ridermail saying "Corporal Herbie here, requesting deployment instructions" or something. We haven't interacted much with him through that channel, maybe it could be a good idea.


Most of the time he will read it if you call the beards number, but the issue with that is that he has a speech to text program that garbles most of what you say. I think once or twice he read a youtube comment, but I'm not sure how much luck you'll have with that method.
Never hurts to try though.

PostPosted: Thu Oct 15, 2015 8:24 pm
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bobbysq
Greenhorn

Joined: 27 Sep 2015
Posts: 6

 		Here's the THD23 spectrogram:



It looks a bit odd, but I'm kind of new at this, so I don't know how to interpret it.

PostPosted: Thu Oct 15, 2015 11:01 pm
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TryingLobster
Boot

Joined: 10 Oct 2015
Posts: 19

 		Nothing interesting in the ID3 tags or spectrogram of THD23. I spent about 20 minutes trying to figure out what the low-frequency noise was until I realized it's at 60, 120, and 180 Hz (which means it's from the electrical grid and not an interesting signal). I thought maybe there were some distorted voices at the beginning but I think it's just the standard into but very quiet compared to the train noise?

I don't think we ever figured anything out from the bread pages, right? I was thinking about Operation B.R.E.A.D. in Corporal Herbie's operations list and how that might tie in to twinbread.com. I haven't found anything interesting on the pages beyond what folks have already found. The BF code is identical on every page. The only discrepancy I found was that Gramercy Tavern's Gingerbread isn't present on the main index.html but I think that's just an oversight.

I know the primes on recipie36 were used to decode the Butts image, but I don't think anything's been done with recipie13 or the copyright date (1863). None of the images on the site have any interesting metadata, btw.

PostPosted: Thu Oct 15, 2015 11:04 pm
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TryingLobster
Boot

Joined: 10 Oct 2015
Posts: 19
bobbysq wrote:
Here's the THD23 spectrogram:



It looks a bit odd, but I'm kind of new at this, so I don't know how to interpret it.


I'll be damned. I was just about to suggest that you downconvert to 16 kS so you get rid of all that black space, but then there's this big signal sticking out at 9.5 kHz. I thought I heard something funny but I thought it was just a squeak in my AC. Working on analysis now.

PostPosted: Thu Oct 15, 2015 11:18 pm
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dangerskew
Boot

Joined: 01 Sep 2015
Posts: 68



Seems like morse code again to me. Sounds like it could be, too.

PostPosted: Fri Oct 16, 2015 1:06 am
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jimmc3rd
Veteran


Joined: 01 Aug 2015
Posts: 97

 		Sounds like a jazz swing beat. ♪

PostPosted: Fri Oct 16, 2015 1:14 am
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Irregular Programming
Veteran

Joined: 31 May 2014
Posts: 115
dangerskew wrote:




Seems like morse code again to me. Sounds like it could be, too.


w e e i a e e i g t?


p e i r e i g t = pier eight?


I dunno, it does looks like it's added there purposely though.

PostPosted: Fri Oct 16, 2015 1:55 am
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TryingLobster
Boot

Joined: 10 Oct 2015
Posts: 19
Irregular Programming wrote:
dangerskew wrote:
Seems like morse code again to me. Sounds like it could be, too.


w e e i a e e i g t?


p e i r e i g t = pier eight?


I dunno, it does looks like it's added there purposely though.


It's definitely on purpose. Take a look at this:



The pings last almost exactly 100 ms each and are spaced in a patterned way. There's no way this is aliasing or some other effect that's present because of the train or the speech. It looks to me more like RS-232 using on/off keying with a carrier at 9.5 kHz. The baud rate would only be 10 bps. I'm looking through the data now if fits that model.

Any other ideas? Maybe the beeps correspond to parts of words being spoken? Or some numeric code?

PostPosted: Fri Oct 16, 2015 2:23 am
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dangerskew
Boot

Joined: 01 Sep 2015
Posts: 68

 		There's more of that in the audio than what's visible in the image I posted. I'll put up one that shows it all.

PostPosted: Fri Oct 16, 2015 2:39 am
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jimmc3rd
Veteran


Joined: 01 Aug 2015
Posts: 97

 		Could the code perhaps be binary? Like say 500ms followed by a 100ms beep be 000001?

edit: I also noticed there was a line before the beeps - could this be a starting point?

PostPosted: Fri Oct 16, 2015 2:41 am
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dangerskew
Boot

Joined: 01 Sep 2015
Posts: 68

 		Okay, here's hopefully a better image. Not going to embed it because the width will screw up the forum.
Ignore the vertical black lines that cut through everything. I can't figure out how to tell Sonic Visualizer to not do that.
http://i.imgur.com/H3RmKVb.jpg

PostPosted: Fri Oct 16, 2015 2:51 am
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TryingLobster
Boot

Joined: 10 Oct 2015
Posts: 19
jimmc3rd wrote:
Could the code perhaps be binary? Like say 500ms followed by a 100ms beep be 000001?

edit: I also noticed there was a line before the beeps - could this be a starting point?


I think that's likely, except that some of the spaces aren't multiples of 100 ms. All of the pulses are very near 100 ms long (what might appear to be a longer pulse is actually two 100 ms pulses). There's just over 60 seconds of this data, though several places have multiple seconds of silence. At most, that's around 600 bits or 60-75 bytes depending on encoding. That's all assuming this is actually binary and not something else.

I don't think I'm on the right track with RS-232-type encoding. There are lots of places that don't have the expected pattern. I would hope that if we hit on the correct encoding it would be really clear that we were on the right path.

PostPosted: Fri Oct 16, 2015 3:24 am
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Grimsicle
Boot

Joined: 20 Nov 2014
Posts: 14

 		Could it possibly be read by a C64?

Or PS/2 Keyboard Signals?

http://www.computer-engineering.org/ps2protocol/

PostPosted: Fri Oct 16, 2015 5:09 am
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spir
Boot

Joined: 12 Oct 2015
Posts: 11
Grimsicle wrote:
Could it possibly be read by a C64?



It doesn't look nearly long enough to be a binary C64 file, and for text files Commodore used a version of ASCII:

http://www.portcommodore.com/dokuwiki/lib/exe/fetch.php?media=larry:comp:commodore:cbmmultichart.pdf

PostPosted: Fri Oct 16, 2015 10:46 am
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rmartins
Boot

Joined: 06 Oct 2015
Posts: 40
TryingLobster wrote:
jimmc3rd wrote:
Could the code perhaps be binary? Like say 500ms followed by a 100ms beep be 000001?

edit: I also noticed there was a line before the beeps - could this be a starting point?


I think that's likely, except that some of the spaces aren't multiples of 100 ms. All of the pulses are very near 100 ms long (what might appear to be a longer pulse is actually two 100 ms pulses). There's just over 60 seconds of this data, though several places have multiple seconds of silence. At most, that's around 600 bits or 60-75 bytes depending on encoding. That's all assuming this is actually binary and not something else.

I don't think I'm on the right track with RS-232-type encoding. There are lots of places that don't have the expected pattern. I would hope that if we hit on the correct encoding it would be really clear that we were on the right path.


One interesting thing to notice is that you never get more than two "on" bits. If "on" meant 1 and "off" meant 0 that would be very weird. So it looks to me like binary data with differential encoding, something like DPSK (https://en.wikipedia.org/wiki/Phase-shift_keying#Differential_phase-shift_keying_.28DPSK.29), where a change means 1 and no change means 0. With that you get a more diverse binary data. I'm trying to decode it by hand using Sonic Visualizer, will post back later if I manage something.

PostPosted: Fri Oct 16, 2015 11:42 am
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