RE: Lossless Compression Help!

["Kenneth Watt" <kennwatt@xxxxxxx>]

Title: RE: [ukha_d] Lossless Compression Help!

Just a little friendly debate ;-)

 

No shouting required!

 

Actually I had a look at that huffy thing and it does look quite interesting but you still have to get the image into the digital domain from analogue and then back out to analogue again for viewing and that’s where the whole thing falls down, which is what I’ve been trying to say!

 

K.

 

-----Original Message-----
From: Mark Harrison [mailto:Mark.Harrison@xxxxxxx]
Sent: 28 May 2002 13:30
To: ukha_d@xxxxxxx Subject: RE: [ukha_d] Lossless Compression Help!

 

Tony,

 

Everyone understands this.

The confusion comes because someone (Jason?) said that they _captured_ losslesly...

 

... when it was asked how (ie - did they have a decoder with a digital out), this got modified to "No - I capture in analogue, and use lossless compression of that".)

 

Then the shouting began.

 

M.

 

-----Original Message-----
From: BUTLER, Tony, FM [mailto:tony.butler@xxxxxxx]
Sent: Tue 28/05/2002 13:23
To: 'ukha_d@xxxxxxx'
Cc:
Subject: RE: [ukha_d] Lossless Compression Help!

> >> Yes, but the compression also removes certain elements of
> the original
> >> and this has been the whole basis of the argument over
> whether analogue
> >> or digital is better for audio for many a long year.

Pkzip etc use compression where, yes, data is removed - otherwise it would
not be compressed!!
BUT at decompression, that data is recovered to create an exact copy of the
original.
With Jpeg/mpeg2 etc, data is removed that CANNOT be recreated - is this why
there appears to be some confusion?
BOTH methods do lose data when the file is compreseed, but one of them can
recover that data.


Tony


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