>but you are still able to make a copy of a file with another bit size
>right ??? the question was how to make back ups - you dont need to
>record any new material to make a backup ?
>if you can listen to it and edit it is one thing - like you can also
>play a stereotape on the answeringmachine without changing it because
>I can play 24 bit and sound comes - if you can make an identical
>twin another ?
>no ?
>kenta
Sure you can copy it - a computer will copy anything even if it
can't decode it - but you can't back it up if you can't create it - if
you give a plain mac a 20 bit sound file to extract it will extract it as
16 bit because that is the maximum sampling rate it can handle - and if
you tell it to play a 20 bit it will turn it into 16 bit and play it
without necessarily telling you. Am I on the right track here - we are
talking about extracting AIFF files from CD? I think you need special
hardware to increase the sampling rate.
Same in imaging - if you open a 24 bit RGB image on a monitor which
can only display 16 bit colour - you can still see a pretty good picture
but the encoding is converted from 1 byte for each of the channels to a
16 bit code for each of the colours. It will still tell you that this
image is 24 bit - but you're not seeing it. Please bear in mind that I am
no expert on sound (although I'm working on it) - only imaging - but I
figure analogue to digital and vice versa will work the same for both.
The system is wierd and wonderful sometimes - take most inkjets for
example (excluding the high end arm and a leg systems) if you send a CMYK
file to the printer it will turn it into an RGB so that it can turn it
into a CMYK using it's own conversion formula for printing.
Pete
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