Changes between Version 2 and Version 3 of DSP/SampSin


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Timestamp:
Jul 1, 2015, 4:19:20 PM (9 years ago)
Author:
dlambros
Comment:

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  • DSP/SampSin

    v2 v3  
     1= Sampling a Sinusoid =
    12For this tutorial, use the Y option when calling doing SSH. First you are going to want to resolve a space on SB3 before continuing on with the tutorial.
    23{{{
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    45}}}
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    6 Check that the nodes are powered ON:
     7Check the current status of the nodes:
    78
    89{{{
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    1112
    12 If one or both of the nodes are in a powered off state turn them on with:
     13If one or both of the nodes are in a powered on state turn them off with:
    1314
    1415{{{
    15 omf tell -a on -t all
     16omf tell -a offh -t all
    1617}}}
    1718
    … …  
    2223}}}
    2324
    24 After calling the nodes will power down after imaging. Turn them back on and enter:
     25The nodes will be in an off state after imaging. Turn them back on and enter:
    2526
    2627{{{
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    2829}}}
    2930
    30 *Note if this doesn't work the first time, the node might be recovering from imaging. Wait a few seconds and try again.
     31*Note if this doesn't work the first time, the node might 'hiccup' because they recovering from imaging. Wait a few seconds and try again.
    3132
    3233Enter on the command line:
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    4243
    4344[[Image(sinkout.png)]]
     45
     46= Determining Frequencies of Multiple Sinusoids =
     47In the case of when you receive a signal that is made of multiple sinusoidal signals that are summed together and you would like to know the frequencies of the individual signals that make of the signal.
     48
     49Below is what the received signal looks like:
     50
     51From this, you wouldn't be able to glance and determine the signals that make it up. But if you view the signals FFT as seen below you can see impulses at the frequencies that make up this signal:
     52