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<span class="path" dir="ltr"><a href="index.html">FOSSEE_Communication_Systems_Toolbox</a> >> <a href="section_1f049b1e3111e3d1d538e7603f77f589.html">FOSSEE_Communication_Systems_Toolbox</a> > finddelay</span>
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<div class="refnamediv"><h1 class="refname">finddelay</h1>
<p class="refpurpose">This function returns the estimated delay between two input signals using crosscorrelation.</p></div>
<div class="refsection"><h3 class="title">Description</h3>
<p class="para">D = FINDDELAY(X,Y), returns estimated Delay D between X
and Y. D is positive implies Y is delayed with respect to X and vice versa.
If X, Y are matrices, then D is a row vector corresponding to delay between columns of X and Y</p>
<p class="para">D = FINDDELAY(...,MAXLAG), uses MAXLAG as the maximum correlation
window size used to find the estimated delay(s) between X and Y:</p>
<p class="para">> If MAXLAG is an integer-valued scalar, and X and Y are row or column
vectors or matrices, the vector D of estimated delays is found by
cross-correlating (the columns of) X and Y over a range of lags
-MAXLAG:MAXLAG.
> If MAXLAG is an integer-valued row or column vector, and one input is vector
and another be matirx (let X is a row or column vector ,
and Y is a matrix) then the vector D of estimated delays is found by
cross-correlating X and column J of Y over a range of lags
-MAXLAG(J):MAXLAG(J), for J=1:Number of columns of Y.
> If MAXLAG is an integer-valued row or column vector, and X and Y are
both matrices. then vector D of estimated delays is found by
cross-correlating corresponding columns of X and Y over a range of lags
-MAXLAG(J):MAXLAG(J).</p>
<p class="para">By default, MAXLAG is equal to MAX(LX,LY)-1 for vectors,</p>
<p class="para"></p></div>
<div class="refsection"><h3 class="title">Examples</h3>
<div class="programlisting"><table border="0" width="100%"><tr><td width="98%"><pre class="scilabcode"><span class="scilabid">X</span> <span class="scilaboperator">=</span> <span class="scilabopenclose">[</span> <span class="scilabnumber">0</span> <span class="scilabnumber">0</span> <span class="scilabnumber">1</span> <span class="scilabnumber">2</span> <span class="scilabnumber">3</span> <span class="scilabopenclose">]</span><span class="scilabdefault">;</span>
<span class="scilabid">Y</span> <span class="scilaboperator">=</span> <span class="scilabopenclose">[</span> <span class="scilabnumber">0</span> <span class="scilabnumber">0</span> <span class="scilabnumber">0</span> <span class="scilabnumber">1</span> <span class="scilabnumber">2</span> <span class="scilabnumber">3</span><span class="scilabopenclose">]</span><span class="scilabdefault">;</span>
<span class="scilabid">D</span> <span class="scilaboperator">=</span> <span class="scilabid">finddelay</span><span class="scilabopenclose">(</span><span class="scilabid">X</span><span class="scilabdefault">,</span><span class="scilabid">Y</span><span class="scilabdefault">,</span><span class="scilabnumber">2</span><span class="scilabopenclose">)</span>
<a class="scilabcommand" href="scilab://disp">disp</a><span class="scilabopenclose">(</span><span class="scilabid">D</span><span class="scilabopenclose">)</span>
<span class="scilabid">X</span> <span class="scilaboperator">=</span> <span class="scilabopenclose">[</span> <span class="scilabnumber">0</span> <span class="scilabnumber">1</span> <span class="scilabnumber">0</span> <span class="scilabnumber">0</span> <span class="scilabdefault">;</span> <span class="scilabnumber">1</span> <span class="scilabnumber">0</span> <span class="scilabnumber">2</span> <span class="scilabnumber">1</span> <span class="scilabdefault">;</span><span class="scilabnumber">0</span> <span class="scilabnumber">0</span> <span class="scilabnumber">0</span> <span class="scilabnumber">2</span> <span class="scilabopenclose">]</span><span class="scilabdefault">;</span>
<span class="scilabid">Y</span> <span class="scilaboperator">=</span> <span class="scilabopenclose">[</span> <span class="scilabnumber">0</span> <span class="scilabnumber">0</span> <span class="scilabnumber">1</span> <span class="scilabnumber">0</span> <span class="scilabdefault">;</span><span class="scilabnumber">1</span> <span class="scilabnumber">0</span> <span class="scilabnumber">0</span> <span class="scilabnumber">2</span> <span class="scilabdefault">;</span> <span class="scilabnumber">0</span> <span class="scilabnumber">0</span> <span class="scilabnumber">0</span> <span class="scilabnumber">0</span> <span class="scilabopenclose">]</span><span class="scilabdefault">;</span>
<span class="scilabid">D</span> <span class="scilaboperator">=</span> <span class="scilabid">finddelay</span><span class="scilabopenclose">(</span><span class="scilabid">X</span><span class="scilabdefault">,</span><span class="scilabid">Y</span><span class="scilabopenclose">)</span>
<a class="scilabcommand" href="scilab://disp">disp</a><span class="scilabopenclose">(</span><span class="scilabid">D</span><span class="scilabopenclose">)</span></pre></td><td valign="top"><a href="scilab://scilab.execexample/"><img src="ScilabExecute.png" border="0"/></a></td><td valign="top"><a href="scilab://scilab.editexample/"><img src="ScilabEdit.png" border="0"/></a></td><td></td></tr></table></div></div>
<div class="refsection"><h3 class="title">Authors</h3>
<ul class="itemizedlist"><li class="member">Pola Lakshmi Priyanka, IIT Bombay</li></ul></div>
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