How to create a Spectrum Analyzer?

Hello people,
Well i need to create a Spectrum Analyzer in my application, to analyze the frequencies from a auido capture.
Any tips? Because i don't know where to start to develop this.
My best,
David

DavidHenriques wrote:
Ok i see. But how to create the graphics, exist some kind of free library related with this?You have a lot of learning to do and the FFT is the least of your worries. Check out Java implementations of the FFT from the source forge repository. Take a look at my second post in Perform Hamming window and FFT with Java for an outline of what you have to do to create the spectrum values. Take a look at JFreeChart for the display of the results though you might find it a bit slow when running real time (I use my own very very simple but fast charting).
You can do everything mechanically without any real understanding what you are doing but I hope your examiners are looking for more; I would be.

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NI LabVIEW Report Generation Toolkit for Microsoft Office
Write To Spreadsheet File VI
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www.ni.com/support

How to capture a .gif file from a spectrum analyzer and save the file in PC

I want to capture a .gif file from a spectrum analyzer and save the file in PC, but I've got a problem when read data from the instrument. I'm not sure how to format the string got from the instrument , When I use "%s" or "%t" as the read string format the data got from the instrument is truncated.
my code are as follows, could anyone tell me where i am wrong?
char resultsArray[5000];
viPrintf(hSpectrumInstr, ":MMEMTORCR 'CICTURE.GIF'\n");
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getchar();
Solved!
Go to Solution.
Attachments:
readResult.docx ‏50 KB

char resultsArray[5000];
viPrintf(hSpectrumInstr, ":MMEMTORCR 'CICTURE.GIF'\n");
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Hello,
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Hello,
Trying to control R3131A spectrum analyzer connected through GPIB-USB-B and my laptop using Labview8.5.
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The typical way to make a measurement on any instrument is as follows:
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3. store result in a file
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Programming an application to communicate to an anritsu spectrum analyzer.

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Hello guillem,
Thank you for contacting National Instruments.
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Attachments:
VISA_Communication.vi ‏33 KB

Spectrum analyzer with sim and DAQ IV File

Hello..
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>
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