nicolas75;572334 Wrote: > You downsample a high resolution file, then upsample to the original > sample rate, which gives you the very same, binary identical, original > file.
If you've thrown away information above fs/2 when you downsampled it, you cant get it back by upsampling. So the binary file would never be identical in that case. nicolas75;572334 Wrote: > I think it is easy to write a software which upsample a file, and mix it > with high resolution noise, or whatever kind of "reverse dithering" dsp. > This will add artificial high resolution data you can hardly distinguish > from real high resolution recording. Sure, you could. Although I would expect someone with experience (like BruceB I mentioned in the post above) to be able to look at the HF content and "decide" whether it is real - harmonics, noise, digital artefacts. -- JackOfAll ------------------------------------------------------------------------ JackOfAll's Profile: http://forums.slimdevices.com/member.php?userid=3069 View this thread: http://forums.slimdevices.com/showthread.php?t=74688 _______________________________________________ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
