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Audio and Video Talk
General Discussion
Some nice weekend reading
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<blockquote data-quote="Ampdog" data-source="post: 49648" data-attributes="member: 144"><p>Alternativeroute (post #3) has put it nicely.</p><p></p><p>I have never worked with it, but in photography the right process can 'improve' the image. It pre-supposes that, at a high sampling rate, the jump from one digit to the next is probably never going to lie outside the average of the two. The process can furthermore look at several previous digits and several following digits, and 'work out' where in between the two main digits it is looking at, an extra sample would probably have fallen to follow a smooth curve. It then goes to the next two digits and repeats the process, etc. In this way scratches (quite large ones) can be 'removed' (actually be covered over), etc.</p><p></p><p>As far as I know the same process is followed in audio. One can visualise a 'smoother' resultant signal, which could serve to at least lower the noise floor. It would also make the output of a (non-perfect) D/A filter smoother/clearer. In that sense digits 'that were not there' can be added. But care will of course have to be taken not to mess matters up with all the other algorithms in the process.</p></blockquote><p></p>
[QUOTE="Ampdog, post: 49648, member: 144"] Alternativeroute (post #3) has put it nicely. I have never worked with it, but in photography the right process can 'improve' the image. It pre-supposes that, at a high sampling rate, the jump from one digit to the next is probably never going to lie outside the average of the two. The process can furthermore look at several previous digits and several following digits, and 'work out' where in between the two main digits it is looking at, an extra sample would probably have fallen to follow a smooth curve. It then goes to the next two digits and repeats the process, etc. In this way scratches (quite large ones) can be 'removed' (actually be covered over), etc. As far as I know the same process is followed in audio. One can visualise a 'smoother' resultant signal, which could serve to at least lower the noise floor. It would also make the output of a (non-perfect) D/A filter smoother/clearer. In that sense digits 'that were not there' can be added. But care will of course have to be taken not to mess matters up with all the other algorithms in the process. [/QUOTE]
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Audio and Video Talk
General Discussion
Some nice weekend reading
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