cliveb;182494 Wrote: 
> Yes, but before you sample an analogue signal, you must first bandwidth
> limit it to half the sampling rate. In your example, if you have
> bandwidth limited the signal to 48kHz, so that it can be sampled at
> 96kHz without aliasing, then you WON'T get a satisfactory sampling at
> 48kHz, because the signal content between 24kHz and 48kHz will cause
> aliasing when you sample it at 48kHz.

Yes, you're right - thanks for the explanation.  

Is there a simple algorithm in the digital domain to deal with this
problem, or do you essentially have to do a D->A, apply the bandwidth
filter, and then A->D again?


-- 
opaqueice
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