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Entry  Fri Aug 12 19:13:25 2016, Praful, Update, Electronics, Mic Self Noise 8x
    Reply  Fri Aug 12 21:26:28 2016, rana, Update, PEM, Mic Self Noise 
       Reply  Mon Aug 15 12:23:56 2016, Praful, Update, PEM, Mic Self Noise 9x
Message ID: 12408     Entry time: Mon Aug 15 12:23:56 2016     In reply to: 12406
Author: Praful 
Type: Update 
Category: PEM 
Subject: Mic Self Noise 

I didn't have a separate training set and data set, so I think that's why the graphs came out looking too good. The units on the graphs are also incorrect, I was interpreting PSD as ASD. I haven't been able to get my Wiener filtering code working well- I get unreasonable subtractions like the noise being larger than the unfiltered signal, so Eric showed me this frequency-dependent calculation described here: https://dcc.ligo.org/LIGO-P990002

This seems to be working well so far:

freq1.pdf

freq2.pdf

freq3.pdf

Here's all the plots on one figure:

frequency_dependent.pdf

Let me know if this looks believable.

Quote:

Seems to good to be true. Maybe you're over fitting? Please put all the traces on one plot and let us know how you do the parameter setting. You should use half the data for training the filter and the second half for doing the subtraction.

 

Attachment 1: freq1.png  72 kB  | Hide | Hide all
freq1.png
Attachment 2: freq1.pdf  350 kB  | Hide | Hide all
freq1.pdf
Attachment 4: freq2.pdf  348 kB  | Hide | Hide all
freq2.pdf
Attachment 6: freq3.pdf  356 kB  | Hide | Hide all
freq3.pdf
Attachment 8: frequency_dependent.pdf  529 kB  Uploaded Tue Aug 16 12:06:28 2016  | Hide | Hide all
frequency_dependent.pdf
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