PSN-L Email List Message

Subject: RE: WinSDR
From: "Marchal van Lare" vanlare@.............
Date: Tue, 14 Feb 2012 23:19:21 +0100


Hi,

Exactly, raw data in Winsdr and filtering with Winquake......... sorry.

Winsdr can be set up to display a signal with a filter, this will not harm
the raw data ;)

Regards,

Marchal

-----Oorspronkelijk bericht-----
Van: psnlist-request@.............. [mailto:psnlist-request@...............
Namens Larry Cochrane
Verzonden: dinsdag 14 februari 2012 23:13
Aan: psnlist@..............
Onderwerp: Re: WinSDR

On 2/14/2012 11:06 AM, Marchal van Lare wrote:
> WinSdr does not muddy up the data, you can still save the raw data in
> Winquake and filter it with WQ.
>
> Marchal
>

I think Marchal meant raw data in WinSDR and filter it with WQ.

Tom Dick wrote:
> Using this new filtering ..... am I right... if you filter within WinSDR
> then you really don't need to filter within WinQuake...it muddies up the
> data....right???

If you mean the period extending filter you should only do this once, either
in 
WinSDR in real-time or after the fact in WinQuake using the raw data channel
from the 
sensor.

 >I had been working with this program about 4 weeks now. I am not satisfied
with the 
 >results. Bob's self-standing program seems better. What participated my
comments
 >was I know there was a "standard" we had with the old WinQuake filtering
and what 
 >we everybody settle on.

Tom, WinSDR and WinQuake use the same code as Bob's program. The only thing
I did was 
convert his Visual Basic code to C++ so I could include the filter into the
programs. 
After adding the code to WQ I compared the output, sample per sample,
between the two 
programs and they were identical.

 >What is this one decade? Does this mean if the pendulum frequency is .04
that I can 
 >go as low as .008?

Decade = 10 so a pendulum frequency of .04 (25 sec) could be extended to
..004 (250 sec).

Regards,
Larry Cochrane
Redwood City, PSN

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