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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: High Resolution Signal versus Upsampled Signal posted by Todd Krieger on August 27, 2003 at 22:52:10:
"and truncation of such derived signals to 24 bits really does not really lose anything."Really?
I take then that you have never designed and implemented an oversampling low-pass filter yourself?
Because more often than not, by choice of filter type or the precise nature of the window around your Sinc filter, the resultant coefficients do not sum to unity. In which case the output of the filter must be scaled to remap full-scale in onto full-scale out.
This scaling is a division that applies to all samples, original ones and interpolated ones alike.See what's happening?
Been there. Done that. Got it cast in silicon. And the t-shirt too.
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Follow Ups
- Re: High Resolution Signal versus Upsampled Signal - Werner 08/27/0323:02:15 08/27/03 (2)
- Think About It... - Todd Krieger 00:57:23 08/28/03 (1)
- Re: Think About It... - Werner 01:38:26 08/28/03 (0)
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