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Oh great many thanks!!</p>
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josep m</p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> matthew brandi <mfbrandi@outlook.com><br>
<b>Sent:</b> Friday, January 31, 2020 9:00 PM<br>
<b>To:</b> Jeppi Jeppi <jeppiot@hotmail.com>; Pd-List <pd-list@lists.iem.at><br>
<b>Subject:</b> Re: [PD] tabread4~ indexing issues</font>
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<div class="x_moz-cite-prefix">On 31/01/2020 17:09, Jeppi Jeppi wrote:<br>
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I noticed <span style="font-family:Calibri,Helvetica,sans-serif; background-color:rgb(255,255,255); display:inline!important">
nasty clicks occur </span>when indexing arrays <span style="font-family:Calibri,Helvetica,sans-serif; background-color:rgb(255,255,255); display:inline!important">
larger than 16384 samples</span> with tabread4~. I attach a demo file, notice I index the array with a cosine therefore no discontinuities are expected, yet beyond that size I get regular clicks.</div>
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What is the cause and how could it be overcome?</div>
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<p style="margin-top: 0px; margin-bottom: 0px;">Dear Josep</p>
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<p style="margin-top: 0px; margin-bottom: 0px;">Check the size of your table. It is 16,387 points, I believe — i.e. 16,384 (a power of two) plus 3 guard points (1 at the beginning, 2 at the end). 20,000 isn’t a power of two, so sinesum looks for the largest
power of two less than 20,000 (i.e. 16,384), and you end up trying to scan past the end of the table.<br>
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<p style="margin-top: 0px; margin-bottom: 0px;">If you give sinesum a power of two to chew on (it will add the guard points itself) and only scan the table less the guard points, you should be OK. I tested this with a table of 65,536 (+ 3) points, and it was
fine.</p>
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<p style="margin-top: 0px; margin-bottom: 0px;">I *think* that answer is error free. I hope it is helpful.</p>
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<p style="margin-top: 0px; margin-bottom: 0px;">Best</p>
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<p style="margin-top: 0px; margin-bottom: 0px;">m<br>
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<pre class="x_moz-signature" cols="85">--
matthew brandi</pre>
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