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Ty Ford
Guest
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 Posted:
Fri Nov 04, 2005 2:34 am Post subject:
Anyone know of any rescrambler software for forensics? |
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Had a guy send me some garbled cell phone audio. You know the kind of weird
smearing that a cell phone can do.
Has anyone heard of any software capable of descrambling something like that?
Regards,
Ty Ford
-- Ty Ford's equipment reviews, audio samples, rates and other audiocentric
stuff are at www.tyford.com
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nmm
Guest
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| Posted:
Fri Nov 04, 2005 2:57 am Post subject:
Re: Anyone know of any rescrambler software for forensics? |
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Ty Ford wrote:
| Quote: | Had a guy send me some garbled cell phone audio. You know the kind of weird
smearing that a cell phone can do.
Has anyone heard of any software capable of descrambling something like that?
Regards,
Ty Ford
-- Ty Ford's equipment reviews, audio samples, rates and other audiocentric
stuff are at www.tyford.com
|
A friend of mine sells CEDAR audio restoration equipment, and sold a
bunch of them to the RCMP. I know cops use CEDAR quite a bit.
Was anyone ever able to reconstruct the Watergate tapes? |
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Scott Dorsey
Guest
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| Posted:
Fri Nov 04, 2005 3:03 am Post subject:
Re: Anyone know of any rescrambler software for forensics? |
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nmm <voxman@arvotek.net> wrote:
| Quote: | Ty Ford wrote:
Had a guy send me some garbled cell phone audio. You know the kind of weird
smearing that a cell phone can do.
Has anyone heard of any software capable of descrambling something like that?
A friend of mine sells CEDAR audio restoration equipment, and sold a
bunch of them to the RCMP. I know cops use CEDAR quite a bit.
|
CEDAR removes noise, but it can't put back something that isn't there,
as with the stuff that happens with cell phones when error rates climb.
If anybody has a solution, Wes Dooley will know who it is, but the chances
are not good.
Lossy compression systems are a major disaster from the standpoint of
the forensic audio specialist.
| Quote: | Was anyone ever able to reconstruct the Watergate tapes?
|
Those 18 minutes are gone forever, but the rest of the stuff is available
through http://nixon.archives.gov for the most part, although they are
slow in getting a lot of them online.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis." |
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Martin Harrington
Guest
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| Posted:
Fri Nov 04, 2005 3:49 am Post subject:
Re: Anyone know of any rescrambler software for forensics? |
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A company called Intellegent Devices.
It's their speciallity.
They were the ones decipheing all the stuff after 9/11
They also happen to design the software for PARIS Daw, (digital
workstation).
www.intdevices.com
--
Martin Harrington
www.lendanear-sound.com
"Ty Ford" <tyreeford@comcast.net> wrote in message
news:Q7GdnTa5XYDV6ffeRVn-jw@comcast.com...
| Quote: | Had a guy send me some garbled cell phone audio. You know the kind of
weird
smearing that a cell phone can do.
Has anyone heard of any software capable of descrambling something like
that?
Regards,
Ty Ford
-- Ty Ford's equipment reviews, audio samples, rates and other
audiocentric
stuff are at www.tyford.com
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KGT
Guest
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| Posted:
Fri Nov 04, 2005 4:11 am Post subject:
Re: Anyone know of any rescrambler software for forensics? |
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Ty
I'm afraid what's gone is gone. I've done 10 years of CDMA and
(alittle) GSM voice quality Audio work for Lucent & now Motorola. I can
sometime figr out the words if the coders FER is <10-20%. Can you post
some of it somewhere & I'll take a look with Audition.
Kevin Tracy |
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Guest
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| Posted:
Fri Nov 04, 2005 4:14 am Post subject:
Re: Anyone know of any rescrambler software for forensics? |
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Scott Dorsey wrote:
| Quote: | Lossy compression systems are a major disaster.
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Scott, I put the period where it belongs, IMNSHO. For a "real good
time", play with CELP, MELP or True Speech. They make MP3 look almost
high quality.
bobs
Bob Smith
BS Studios
we organize chaos
http://www.bsstudios.com |
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Courtney Goodin
Guest
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| Posted:
Fri Nov 04, 2005 5:43 am Post subject:
Re: Anyone know of any rescrambler software for forensics? |
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"Ty Ford" <tyreeford@comcast.net> wrote in message
news:Q7GdnTa5XYDV6ffeRVn-jw@comcast.com...
| Quote: | Had a guy send me some garbled cell phone audio. You know the kind of
weird
smearing that a cell phone can do.
Has anyone heard of any software capable of descrambling something like
that?
Regards,
Ty Ford
-- Ty Ford's equipment reviews, audio samples, rates and other
audiocentric
stuff are at www.tyford.com
|
Most of that stuff is single sideband suppressed carrier if it is analog
interference (not easy to correct) and if digital and is just missing
packets you could try some kind of restoration software that fixes dropouts
using interpolation.
---Courtney |
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Martin Harrington
Guest
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| Posted:
Sat Nov 05, 2005 4:24 am Post subject:
Re: Anyone know of any rescrambler software for forensics? |
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Not for 3 years or so, but they won't open source it, and maintain that
their still going to do something with it.
--
Martin Harrington
www.lendanear-sound.com
"Predrag Trpkov" <predrag.trpkovNeSpamu@ri.htnet.hr> wrote in message
news:dkft8e$33j$1@ss405.t-com.hr...
| Quote: |
"Martin Harrington" <lendan@bigpond.net.au> wrote in message
news:gBvaf.7974$Hj2.4175@news-server.bigpond.net.au...
A company called Intellegent Devices.
It's their speciallity.
They were the ones decipheing all the stuff after 9/11
They also happen to design the software for PARIS Daw, (digital
workstation).
www.intdevices.com
They still do?
Predrag
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Martin Harrington
Guest
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| Posted:
Sat Nov 05, 2005 4:25 am Post subject:
Re: Anyone know of any rescrambler software for forensics? |
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That's right, along with Edmund Pireli.
--
Martin Harrington
www.lendanear-sound.com
"Ty Ford" <tyreeford@comcast.net> wrote in message
news:5-6dndKR8a8GEfbeRVn-sg@comcast.com...
| Quote: | On Thu, 3 Nov 2005 16:49:00 -0500, Martin Harrington wrote
(in article <gBvaf.7974$Hj2.4175@news-server.bigpond.net.au>):
A company called Intellegent Devices.
It's their speciallity.
They were the ones decipheing all the stuff after 9/11
They also happen to design the software for PARIS Daw, (digital
workstation).
www.intdevices.com
Hee hee. that would be Stephen St. Croix's company; a lacrosse ball's toss
down the road from here. Thanks
Again. it's not so much about the noise as it is the ;cgil #li hn_= kj and
other lossy compression smearing.
Regards,
Ty
-- Ty Ford's equipment reviews, audio samples, rates and other
audiocentric
stuff are at www.tyford.com
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Ty Ford
Guest
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| Posted:
Sun Nov 06, 2005 8:13 pm Post subject:
Re: Anyone know of any rescrambler software for forensics? |
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On Sat, 5 Nov 2005 03:12:38 -0500, Edi Zubovic wrote
(in article <15qom1dlqvkegbt64jeldmh4eqlpe6ic5o@4ax.com>):
| Quote: | On Fri, 4 Nov 2005 11:30:20 -0500, Ty Ford <tyreeford@comcast.net
wrote:
------------------8<----------------------
Again. it's not so much about the noise as it is the ;cgil #li hn_= kj and
other lossy compression smearing.
Regards,
Ty
-- Ty Ford's equipment reviews, audio samples, rates and other audiocentric
stuff are at www.tyford.com
Ty,
can you post somewhere a short clip? -- I mean, I can imagine the
problem but I'm curious to see it. Not interested in contents, of
course :)
Tku in advnc,
Edi Zubovic, Crikvenica, Croatia
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Dobre Utro Edi!
Sorry to say, upon the request of the client, I trashed everything. It was a
legal thing.
Regards,
Ty Ford
-- Ty Ford's equipment reviews, audio samples, rates and other audiocentric
stuff are at www.tyford.com |
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Ty Ford
Guest
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| Posted:
Sun Nov 06, 2005 8:17 pm Post subject:
Re: Anyone know of any rescrambler software for forensics? |
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On Sat, 5 Nov 2005 05:27:16 -0500, ggriswold wrote
(in article <1131186436.587149.111480@f14g2000cwb.googlegroups.com>):
Hi George,
That link appears not to work for me.
What I was hearing (at the worst moments) was the syllables turning into
short or longer tones, some modulated slightly, some not.
The cell phone was in her purse and there was a a considerable amount of
local noise as well as the data compression and interpolation.
Regards,
Ty
-- Ty Ford's equipment reviews, audio samples, rates and other audiocentric
stuff are at www.tyford.com |
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Edi Zubovic
Guest
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| Posted:
Sun Nov 06, 2005 10:08 pm Post subject:
Re: Anyone know of any rescrambler software for forensics? |
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On Sun, 6 Nov 2005 09:13:39 -0500, Ty Ford <tyreeford@comcast.net>
wrote:
-----------------8<------------------------
| Quote: |
can you post somewhere a short clip? -- I mean, I can imagine the
problem but I'm curious to see it. Not interested in contents, of
course :)
Tku in advnc,
Edi Zubovic, Crikvenica, Croatia
Dobre Utro Edi!
Sorry to say, upon the request of the client, I trashed everything. It was a
legal thing.
Regards,
Ty Ford
-- Ty Ford's equipment reviews, audio samples, rates and other audiocentric
stuff are at www.tyford.com
|
--Oh, it's perfectly all right. I was reading some materials about
Algorithmix's Renovator and I tried to see whether this issue could be
mended by that technology. It seems that tool could be of help with
cleaning spots, even longer tones and their harmonics content out of a
recording -- not at an affordable price for everyone but I like the
idea*. But, if there's a significiant loss, I think there's very hard
to get anything usable enough; perhaps there's some very advanced
resynthesis technologies out there, but of course, in the service of
forensics and the law :)
*Recently I looked at Cubetec's site in Germany -- it seems they have
Renovator or the (very) alike in their Wavelab-based VPI plugins set:
http://www.audiocube-solution.com/
All the best,
Edi Zubovic, Crikvenica, Croatia |
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Marty
Guest
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| Posted:
Sun Nov 13, 2005 4:18 am Post subject:
Re: Anyone know of any rescrambler software for forensics? |
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Steven was in a real bad bike accident a few years back (just after I
met him). Have you heard from him recently?
Marty Atias
Ty Ford wrote:
| Quote: | On Thu, 3 Nov 2005 16:49:00 -0500, Martin Harrington wrote
(in article <gBvaf.7974$Hj2.4175@news-server.bigpond.net.au>):
A company called Intellegent Devices.
It's their speciallity.
They were the ones decipheing all the stuff after 9/11
They also happen to design the software for PARIS Daw, (digital
workstation).
www.intdevices.com
Hee hee. that would be Stephen St. Croix's company; a lacrosse ball's toss
down the road from here. Thanks
Again. it's not so much about the noise as it is the ;cgil #li hn_= kj and
other lossy compression smearing.
Regards,
Ty
-- Ty Ford's equipment reviews, audio samples, rates and other audiocentric
stuff are at www.tyford.com
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