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On Mon, 11 Feb 2008 09:50:45 +0100, scott wrote:
>> For someone with the skills, extracting the necessary keys has become
>> fairly trivial. How long did it take for HD-DVD and Blu-Ray DVD
>> encryption to be "broken"?
>
> Exactly, and it hasn't even been properly "broken" in the sense Andrew
> means.
Precisely - the result is the important thing.
Jim
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On Mon, 11 Feb 2008 22:22:24 +0100, Tor Olav Kristensen wrote:
> Jim Henderson wrote:
>> On Sun, 10 Feb 2008 14:57:54 +0100, Tor Olav Kristensen wrote:
>>
>>>> I'd think that the conversion back and forth would modify an attempt
>>>> like this enough. Remember that mp3 encoding is lossy, not lossless.
>>> Yes, I know. And to overcome that, just don't make the changes to the
>>> sound THAT small.
>>
>> The thing is, the watermark, in order to be meaningful, would have to
>> re- encode exactly the same way. Otherwise, you end up with a
>> scrambled watermark. So you can maybe tell it was there, but not what
>> it was.
>
> Redundancy. Error correction codes.
I don't think that helps from the point of converting and then re-
encoding.
Jim
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On Mon, 11 Feb 2008 08:30:34 +0000, Stephen wrote:
> On 9 Feb 2008 15:39:13 -0500, Jim Henderson <nos### [at] nospam com> wrote:
>
>>I played in a youth orchestra when I was in high school, and the
>>conductor was having trouble getting us to learn the Symphonie
>>Fantastique,
>
> LOL
> When it was written, the professional musicians of the time hated it. It
> was too difficult for them. Thirteen timpani detuned to get the effect
> Berlioz wanted in the march to the scaffold IIRC.
It's not surprising; it is a fairly difficult piece; and if you think the
march effect was tough, you ain't seen the violin bit for the start of
the 5th movement. ;-)
Jim
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On Mon, 11 Feb 2008 08:35:20 +0000, Stephen wrote:
> On 9 Feb 2008 15:46:28 -0500, Jim Henderson <nos### [at] nospamcom> wrote:
>
>>On Sat, 09 Feb 2008 09:49:37 +0000, Stephen wrote:
>>
>>> 11CDs SHOSTAKOVICH Complete Symphonies 1-15 Barshai
>>
>>I got the 10th as I was looking for a recording of the Festival Overture
>>and it was on that disc. Third movement brings a vivid image to me of a
>>horse-drawn sleigh being pulled quickly across a snowy field for some
>>reason.
>>
>>
> That's my wife's I'll probably be out of the room or even the house,
> when she listens to it :)
:-)
>>How are the others?
>>
>>
> So far so good
Cool. I had wondered; I like Shostakovich, but he does tend towards
modern in his sound, and sometimes that doesn't work for me.
>>> CD DVORAK Complete Slavonic Dances Op 46, Op 72 RoyalPO 2CDs DVORAK
>>> Slavonic Dances & Other Music for PianoDuet
>>
>>Now there's something I haven't heard in ages - I think I've only got
>>those on cassette (and sheet music for violin solo at that). I'd
>>forgotten about those almost entirely.
>>
> I've not got round to these yet. In fact I've got a backlog that is
> quite long :(
Same here...
Right now still trying to get through the complete scores from all 3 LOTR
films. Finished TTT yesterday, now going through FOTR.
Jim
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Jim Henderson wrote:
> The thing is, the watermark, in order to be meaningful, would have to re-
> encode exactly the same way.
No it wouldn't. People work on watermarks all the time that don't need
precise reencoding.
Xerox worked on systems for watermarking documents that would survive
being photocopied at the wrong size and then faxed, for example.
--
Darren New / San Diego, CA, USA (PST)
On what day did God create the body thetans?
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On Mon, 11 Feb 2008 17:48:21 -0800, Darren New wrote:
> Jim Henderson wrote:
>> The thing is, the watermark, in order to be meaningful, would have to
>> re- encode exactly the same way.
>
> No it wouldn't. People work on watermarks all the time that don't need
> precise reencoding.
>
> Xerox worked on systems for watermarking documents that would survive
> being photocopied at the wrong size and then faxed, for example.
I'm trying to see how that would work in a sound file, though. Visual
watermarks are generally a different matter.
Jim
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Jim Henderson wrote:
> I'm trying to see how that would work in a sound file, though.
Futz with the analog before you encode it the first time. It's going to
be more audible that one that wouldn't survive recodings, but if you
want a watermark that survives being played out a speaker and
re-recorded, that's what you need.
I don't know enough about the physics of it to know how to do it, but I
know it's been done (and broken) multiple times.
--
Darren New / San Diego, CA, USA (PST)
On what day did God create the body thetans?
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On 11 Feb 2008 19:11:15 -0500, Jim Henderson <nos### [at] nospamcom> wrote:
>
>It's not surprising; it is a fairly difficult piece; and if you think the
>march effect was tough, you ain't seen the violin bit for the start of
>the 5th movement. ;-)
No I've not and even if I had I wouldn't understand it. One of my biggest
disappointments in life is that I have no singing voice and can't keep time. :(
I march to the beat of a different drum, as they say :)
Regards
Stephen
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On Mon, 11 Feb 2008 20:35:18 -0800, Darren New wrote:
> Jim Henderson wrote:
>> I'm trying to see how that would work in a sound file, though.
>
> Futz with the analog before you encode it the first time. It's going to
> be more audible that one that wouldn't survive recodings, but if you
> want a watermark that survives being played out a speaker and
> re-recorded, that's what you need.
>
> I don't know enough about the physics of it to know how to do it, but I
> know it's been done (and broken) multiple times.
Huh, I wouldn't have thought it could be done...too many variables..
Jim
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On Tue, 12 Feb 2008 08:36:11 +0000, Stephen wrote:
> On 11 Feb 2008 19:11:15 -0500, Jim Henderson <nos### [at] nospamcom> wrote:
>
>
>>It's not surprising; it is a fairly difficult piece; and if you think
>>the march effect was tough, you ain't seen the violin bit for the start
>>of the 5th movement. ;-)
>
> No I've not and even if I had I wouldn't understand it. One of my
> biggest disappointments in life is that I have no singing voice and
> can't keep time. :( I march to the beat of a different drum, as they say
> :)
Well, my violin teacher always said I couldn't count my way out of a wet
paper bag. (My sense of timing is pretty bad, but I still managed to be
pretty good even if I do say so myself <g>).
Jim
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