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Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum
From: |
Marcus D. Leech |
Subject: |
Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum |
Date: |
Mon, 09 Mar 2009 09:47:11 -0400 |
User-agent: |
Thunderbird 2.0.0.19 (X11/20090105) |
Brian Padalino wrote:
>
>
> As per the original question, I am wondering what the reason for
> taking the time to do a 4M point FFT and then compressing the
> frequency information? I would think you're just throwing away
> frequency resolution at that point and, inherently, wasting CPU
> cycles.
>
> So - back to Marcus - what is the overall goal of "compressing" your
> FFT data? I have a feeling it's for visualization of your data as
> opposed to actually performing math or computational analysis, right?
>
The original {1,2,4,8,16}M-bin data are used for SETI analysis, while
the "compressed" version
is used for a quick visual, "conventional" spectral display.
--
Marcus Leech
Principal Investigator, Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum, (continued)
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum, Marcus D. Leech, 2009/03/10
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum, Frank Brickle, 2009/03/10
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum, Marcus D. Leech, 2009/03/10
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum, Frank Brickle, 2009/03/10
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum, Marcus D. Leech, 2009/03/10
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum, Marcus D. Leech, 2009/03/10
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum, Firas Abbas, 2009/03/10
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum, Marcus D. Leech, 2009/03/10
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum, Marcus D. Leech, 2009/03/10
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum, Marcus D. Leech, 2009/03/10
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum,
Marcus D. Leech <=
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum, Brian Padalino, 2009/03/09
- Re: [Discuss-gnuradio] Correct method for "compressing" a power spectrum, Marcus D. Leech, 2009/03/09