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Fri Jan 15 12:04:26 2010, Sanjit, mevans, Update, Adaptive Filtering, Canceling noise again!
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Tue Jan 26 19:51:44 2010, Sanjit, rana, Update, Adaptive Filtering, OAF details  
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Mon Feb 1 18:31:00 2010, Sanjit, Update, Adaptive Filtering, OAF details
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Mon Feb 1 21:51:12 2010, Sanjit, Update, Adaptive Filtering, OAF details
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Fri Feb 5 00:52:55 2010, Sanjit, Update, Adaptive Filtering, OAF at 0.1-1.0 Hz 
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Fri Feb 5 01:04:58 2010, Sanjit, Update, Adaptive Filtering, OAF at > 5Hz
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Sat Feb 6 00:10:08 2010, Sanjit, Update, Adaptive Filtering, OAF at > 5Hz
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Message ID: 2516
Entry time: Fri Jan 15 12:04:26 2010
Reply to this: 2548
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Author: |
Sanjit, mevans |
Type: |
Update |
Category: |
Adaptive Filtering |
Subject: |
Canceling noise again! |
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OAF is successfully canceling noise again, thanks to Matt!
Here is a plot showing more than a factor of 10 noise reduction around 3Hz (similar to what we saw in the simulations)
The changes that has made it work are:
- use of RANGER channel (with ACC_MC1_X and/or ACC_MC2_X)
- mu = 0.01, tau = 1.0e-6, ntaps = 2000, nDown = 16
- nDelay = 5 and nDelay = 7 both work (may not be so sensitive on delay at low frequencies)
- Main changes: filter bank on the PEM channels (ASS_TOP_PEM_## filters: 0.1:0, 1:, Notch24, AA32)
- Added the AI800 filter for upsampling in MC1 (should not matter)
Matt suggested playing with the emphasis (EMPH) filters to cancel noise in different frequency bands.
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