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BFD results with filter info (1 Viewer)

Rick Radford

Supporting Actor
Joined
May 12, 2001
Messages
642
Gang,
I thought Jeffrey did a nice job showing what he accomplished with his BFD.
I thought I'd expand a bit with my results and show graphs made with both ETF and Excel and include the filter info I used to get the results. Hope someone struggling with this finds it useful.
Note: You may have to copy the link and paste it in the address window of your browser for it to work. I remain stumped as to why the links and images work erratically for me.
First is an Excel graph (I got from Sonnie's excellent site) which shows:
Raw spl (no RS correction) in yellow
Raw spl with RS correction in dark blue
BFD spl (no RS correction) in cyan
BFD spl with RS correction in magenta
(the data for the Excel graph came from ETF5 which normalizes the data to a max of 100 dB, so the numbers you see are not actual spls, but do show an accurate curve shape)
Compare the dark blue line to the magenta line (with RS correction: raw vs BFD). Or the yellow line to the cyan line (without RS correction: raw vs BFD).
Click here for the excel graph.
The ETF graph shows a baseline measurement and EQ results with filters I set up on 2 different days. There are no RS corrections applied to this data. The major difference between the EQ'd results is a 3 dB boost @ 81 Hz I plugged into the 02.07 line (filter 5 in the 02.07 data below).
Click here for the ETF graph.
Here are the filters for the ETF line named 01.31:
Filter settings for 01/31/2002
Sub trim = 0
FilterFrequencyBWGain
F1: 32 +8/606/60-4
F2: 50 –8/607/60-7
F3: 50 +9/604/60-5
F4: 80 -9/605/60-4
F5: 80 +8/605/60-3
And here are the filters for the ETF line named 02.07:
Filter settings for 02/07/2002
Sub trim = +5
FilterFrequency BWGain
F1: 25+8/606/60-3
F2: 32+8/606/60-6
F3: 50-8/606/60-10
F4: 50+8/603/60-7
F5: 80+1/6010/60+3
F6: 40+0/604/60-1
 

Jeffrey Noel

Screenwriter
Joined
Sep 11, 2001
Messages
1,533
Thanks Rick! :)
I can't get your links to work. It says that I do not have access to them. Is it just a problem with Geocities?
I'll have to post my filter parameters, just like you! :emoji_thumbsup:
Isn't the BFD just marvelous?! :D
 

Rick Radford

Supporting Actor
Joined
May 12, 2001
Messages
642
>I can't get your links to work. It says that I do not have access to them. Is it just a problem with Geocities?<

I know. It's a royal PITA for me as well. You have to copy the link and paste it in the address window of your browser for it to work (at least for me). And it's the same address that's already in the browser. Go figure!

I'd post the images in the msg, but am running into the same problem there.

Dang computers, grumble, grumble. Or maybe it's the nut behind the wheel. I dunno.

Edit: I can't even make my work-around work now in IE 5.0. But it just did work in Netscape 4.79 and Opera 6.01. (!)
 

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