Home Propeller Head Plaza

Technical and scientific discussion of amps, cables and other topics.

[ Follow Ups ] Thread: [ Display  All  Email ] [ Propeller Head Plaza ]
[ Alert Moderator ]

Hi Ted.

that was fast..

Yes, by looking at the dac immediately before any filtering, you see the step waveform. And the peak values at that point are visibly riding three sines. But, post filtering cannot reconstruct the peak value of the 15Khz signal on a cycle by cycle basis unless the filter is resonating at 15Khz.

Nyquist theory assumes the ability to reconstruct using more than one sample, much as an FFT requires many points.

It would be nice to have someone chime in who can support the math to show how point by point reconstruction is not really pure nyquist theory. I can't.

How do I get pics here?

Cheers, John

This post is made possible by the generous support of people like you and our sponsors:
  Herbie's Audio Lab  

Follow Ups Full Thread
Follow Ups
You can not post to an archived thread.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]