# Differences

This shows you the differences between two versions of the page.

Link to this comparison view

tutorial:the_discrete_fourier_transformation_dft [2013/08/02 12:37]
Simon-Shlomo Poil [The Discrete Fourier Transformation (DFT): Definition and numerical examples]
tutorial:the_discrete_fourier_transformation_dft [2014/12/04 11:45] (current)
Klaus Linkenkaer-Hansen [Background]
Line 11: Line 11:
- Learn to work with complex numbers and complex functions.   - Learn to work with complex numbers and complex functions.

-<note tip>You can run FFT analysis in the NBT toolbox (using the Welch method). See [[tutorial:amplitude_in_classical_frequency_bands|]] or [[tutorial:power_spectra_wavelet_analysis_and_coherence|]]</note>+<note tip>You can run FFT analysis in the NBT toolbox ([[tutorial:download_and_install_nbt|]]) (using the Welch method).
+
+See
+
+[[tutorial:amplitude_in_classical_frequency_bands|]]
+
+or
+
+[[tutorial:power_spectra_wavelet_analysis_and_coherence|]]</note>

===== Background ===== ===== Background =====
Line 27: Line 35:
** Preparation for the tutorial ** ** Preparation for the tutorial **

-The commands on in this box ensure that the following exercise has all the necessary scripts and does not interfere with variables or graphics from previous exercises. If you come directly from another exercise it should be clear which commands you can skip.+The commands in this box ensure that the following exercise has all the necessary scripts and does not interfere with variables or graphics from previous exercises. If you come directly from another exercise it should be clear which commands you can skip.

Start MATLAB and find your current working directory using 'pwd'. Start MATLAB and find your current working directory using 'pwd'.
Line 99: Line 107:
phs = 90/360; % the phase of the wave.  phs = 90/360; % the phase of the wave.

- [wave] = SignalGenerator_sin(frq, len, Fs, phs); % Generate a sine wave.+ [wave] = signalgenerator_sin(frq, len, Fs, phs); % Generate a sine wave.
</code> </code>

Line 279: Line 287:

<html> <html>
-<script type="text/javascript"><!-- +<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
-google_ad_client = "ca-pub-8640848843881724";+<!-- nbtwikibundbar -->
-/* nbtwikibundbar */ +<ins class="adsbygoogle"
-google_ad_slot = "2215324537"; +     style="display:inline-block;width:728px;height:90px"
-google_ad_width = 728; +     data-ad-client="ca-pub-8640848843881724"
-google_ad_height = 90+     data-ad-slot="2215324537">;<;/ins>
-//-->+<script>
+(adsbygoogle = window.adsbygoogle || []).push({});
</script> </script>
-<script type="text/javascript" +</html>
-src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> +
-</script></html>+

tutorial/the_discrete_fourier_transformation_dft.1375447065.txt.gz · Last modified: 2013/08/02 12:37 by Simon-Shlomo Poil
The NBTwiki platform - version 2.8 - 9 May 2013
Copyright (C) 2008-2015