PookyNMR wrote on Thu, 14 October 2004 16:07 |
Thanks guys, this is an incredible learning opportunity. I did finish Nika's 'digital filters' paper last night. I now have (or think I have) a basic understanding of IIR and FIR filters. I do have some first year University calculus and linear algebra classes under my belt so the math did not scare me too much. If I understand correctly, the waveform (voltage) is reconstructed from the sample data by upsampling the original sample ("smoothing the circle" to borrow Dan's analogy). These new samples from the upsampling are they created by runing the original samples value through a 'windowed' FIR filter. Correct? Thanks. Nathan |
PookyNMR wrote on Thu, 14 October 2004 16:07 |
I did finish Nika's 'digital filters' paper last night. |
Quote: |
I now have (or think I have) a basic understanding of IIR and FIR filters. I do have some first year University calculus and linear algebra classes under my belt so the math did not scare me too much. |
Quote: |
If I understand correctly, the waveform (voltage) is reconstructed from the sample data by upsampling the original sample ("smoothing the circle" to borrow Dan's analogy). These new samples from the upsampling are they created by runing the original samples value through a 'windowed' FIR filter. Correct? |
Nika Aldrich wrote on Thu, 14 October 2004 14:16 |
Does that answer the question? I know it will start a few more. I'm ready. Do you understand, for example, WHY we do the two-step on the filtering, filtering once before conversion and once after? Nika. |