PSN-L Email List Message
Subject: Re: WinSDR decimating
From: Brett Nordgren brett3nt@.............
Date: Sat, 09 Jan 2010 22:44:32 -0500
Thanks Bob and Larry,
That's what I needed to know.
Brett
At 06:54 PM 1/9/2010 -0800, you wrote:
>Hi Brett,
>
>Bob is correct, WinSDR averages the input samples to produce the decimated
>output samples.
>
>Regards,
>Larry Cochrane
>Webtronics
>
>Robert McClure wrote:
>>Brett, I have asked Larry this question before. The data is
>>sample-averaged. Thus, if you reduce the sample rate by a factor of
>>10, then 10 samples are averaged to yield the output sample.
>>On 1/8/10, Brett Nordgren wrote:
>>>Larry,
>>>
>>>I am generating event files to use for analyzing our noise and was
>>>wondering how WinSDR handles reducing the sample rate. Suppose we're
>>>sampling at 200 SPS (Version III board) and we want to save an event file
>>>at 1 SPS. How does WinSDR handle the decimation of the data to the lower
>>>sample rate. Does it mathematically process the data in some way or just
>>>pass along every 200th point?
>>>
>>>Brett
>>
>>Watch our wiggles
>>http://bnordgren.org/seismo/gif_images.htm
>>
>>or watch some very very good wiggles
>>http://aslwww.cr.usgs.gov/Seismic_Data/telemetry_data/ANMO_24hr.html
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