James Richard Tyrer wrote:
Remember that you have a 3,221,225,472,000Hz bit rate.
Perhaps this isn't really clear. This corresponds to the *clock* rate of an equivalent single bit serial signal. That is, it is 2^24 * 192Ks/s. The signal would only have one low to high and one high to low transition for every 1/192K sec frame, but the clock would have to run that fast to produce a 1 bit signal with all of the information in the 24bit @ 192K s/s signal. You can cut this in half by separating the sign bit. But this is still a way too high a frequency to even consider.
A digital Bessel filter
A Bessel filter is always preferred because it has constant delay in the pass band. A disadvantage is that the F0 needs to be greater than the highest frequency in the desired pass band. In theory, you are going to get more bits out with a FIR Bessel filter which you need to discard since they are only higher frequency information.
-- JRT _______________________________________________ Open-hardware mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-hardware
