http://www.k-wave.org/forum/topic/fft-padding-in-extractampphase-function-in-heat-simulation Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:28:11 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/fft-padding-in-extractampphase-function-in-heat-simulation#post-7632 Sun, 21 Jun 2020 22:39:04 +0000 Hammerben1 7632@http://www.k-wave.org/forum/ <p>Yep that works perfectly thanks! </p> http://www.k-wave.org/forum/topic/fft-padding-in-extractampphase-function-in-heat-simulation#post-6617 Mon, 29 Oct 2018 11:44:55 +0000 Bradley Treeby 6617@http://www.k-wave.org/forum/ <p>Hi Hammerben1,</p> <p>If you have followed the "Heating By A Focused Ultrasound Transducer" example and recorded for an integer number of points per period, you can turn off the padding and windowing, i.e., use:</p> <pre><code>% extract the pressure amplitude at each position p = extractAmpPhase(sensor_data.p, 1/kgrid.dt, freq, ... &#39;FFTPadding&#39;, 1, &#39;Window&#39;, &#39;Rectangular&#39;);</code></pre> <p>Does that answer your question?</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/fft-padding-in-extractampphase-function-in-heat-simulation#post-6582 Fri, 14 Sep 2018 20:18:50 +0000 Hammerben1 6582@http://www.k-wave.org/forum/ <p>hi:<br /> We are trying to do heat simulation on a 700x1400 grid. However, we found that that dimension of heat simulation would require &gt;190GB RAM. We therefore changed the fft padding in extractAmpPhase function to 1. We wonder what would that do to the heat simulation results? Also should the heat simulation be ran on p_max? Can it?<br /> Thanks! </p>