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visits member for 2 years, 9 months
seen Apr 9 '12 at 19:24

Apr
9
awarded  Scholar
Apr
9
accepted Noise amplitude increases as sample rate increase
Mar
3
comment Noise amplitude increases as sample rate increase
What you say about time averaging could be the case - that would mean that we have a lot of noise intrinsically in the collection. Then would that mean theoretically there is a sample rate if we go above which, the amplitude would stay the same?
Mar
3
comment Noise amplitude increases as sample rate increase
Hey Colin, so its called a load cell: basically its a probe attached to the arm of this machine which slowly (.1 mm/sec) moves downward into the material while simultaneously measuring resistance from which it determines the reaction force (how this works exactly i'm not sure). The machine is attached to a computer which allows us to select the sample rate. I think the measurement happens at the same rate but the sending to the computer happens at a faster rate when sample rate increases (i think?).
Mar
3
comment Noise amplitude increases as sample rate increase
Thanks for the answer...The question that I'm wondering is not how to overcome this..but why it happens? Is there a reason that the amplitude should change when the sampling rate is changed?
Mar
2
asked Noise amplitude increases as sample rate increase
Feb
25
awarded  Student
Feb
24
asked What is “charge discreteness”?