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Neil Young on the future of audio


SteveFord

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Wait a minute, I forgot, we're talking about the RIAA here. 
Now that the last audio format has been cracked (SACD),
they have to invent another one so that they can resurrect their glory days of raping artists and consumers alike.
 
Maybe they've finally reached their goal of creating a format with 1000 bit encryption and a 3dB dynamic range! 
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 Sorry if that wasn't clear.
It is now possible for regular people to make exact digital copies of SACDs.
As far as I know, it was the last significant digital audio format to be cracked,
in other words, to have the copy-protection defeated.
  
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 Sorry if that wasn't clear.
It is now possible for regular people to make exact digital copies of SACDs.
As far as I know, it was the last significant digital audio format to be cracked,
in other words, to have the copy-protection defeated.
  
 
DVD-A's CPPM encryption has been broken as well.  I'm guessing that this new his res format will be a digital download (any new hardware encryption scheme has been shown to just annoy people, can be broken, and forces people to either buy a new device or opt out and let it fail) 

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  • 3 weeks later...
That stepped-looking response is misleading. 
The magic that's actully happening is lots of fancy math is used
and the sine wave is reconstructed using those data points.
 
As it turns out, you only need two of those data points per cycle
to have enough information to rebuild the waveform.
That's called Nyquist theory or somesuch and is pretty well agreed upon.
  
The upshot of is is that if you sample 44,100 times a second, you can accurately rebuild waveforms of
frequencies up to 22,050 Hz on a CD and much much higher with DVD Audio.
 
The part that's perhaps a bit less certain is whether or not reconstructing with resolution beyond 20 kHz can be perceived. 
I think it's an oversimplification to just dismiss doing this simply because we can't hear higher than 16kHz or so.
Tiny delays in sound arrivals allow us to tell what direction a sound comes from.
We can't say "Ooh, I sensed a 30 microsecond delay."
But, we can point to where we think a sound came from based on the arrival time to our two ears.
 
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