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In Reply to: Re: Theory vs. Practice posted by Christine Tham on May 19, 2006 at 15:31:24:
<< If the source signal rapidly changes in amplitude and frequency), then even relatively small errors in the time domain (caused by jitter) or amplitude (caused by filtering/upsampling etc.) can cause reconstruction errors for frequencies above 15kHz (for 44.1kHz sampling rate) so LARGE they exceed full scale at 20-22kHz (and is this is in the digital domain prior to Nyquist filtering)! >><< Let me say it another way: the waveform (which in my case is a test signal consisting of a pair of sine waves modulated in both frequency and amplitude) that is being reconstructed is TOTALLY DIFFERENT from that implied by the captured recording. >>
What you are saying sounds very unlikely to me. However, there isn't enough information in your post to understand your claims. Could you please clarify your statements?
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Follow Ups
- I'm not following you - Charles Hansen 21:14:38 05/20/06 (2)
- I'll try and explain it as simply as I can, but it is a lot easier if i can draw a picture - Christine Tham 22:01:19 05/20/06 (1)
- Re: I'll try and explain it as simply as I can, but it is a lot easier if i can draw a picture - Frank.. 11:30:45 05/22/06 (0)
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