PhilNYC;130961 Wrote: > if you upsample a 44.1khz data sample to 96khz, how do you not invent > new data?You're not inventing data because you're using the information that already exists within the digital signal to create the intermediate points. There's no more information in the signal - you're not creating anything, you're just filtering the signal.
You might like to think of it in relation to what happens at the DAC; the digital signal is converted to an instantaneous analogue level at the sampled points, and then held (and filtered) to give a continuous analogue signal. But the signal between the precise sampled points (in the analogue domain) is not 'invented'. Maybe in concept it's even akin to FLAC compression; when you decompress from FLAC to WAV you get more data samples, but you're not 'inventing' data - the information is all in the original compressed FLAC file. -- Patrick Dixon www.at-tunes.co.uk ------------------------------------------------------------------------ Patrick Dixon's Profile: http://forums.slimdevices.com/member.php?userid=90 View this thread: http://forums.slimdevices.com/showthread.php?t=26685 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
