http://www.k-wave.org/forum/topic/pressure-wave-amplitudes-are-not-same-compared-to-matlab-computation Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:08:30 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/pressure-wave-amplitudes-are-not-same-compared-to-matlab-computation#post-7822 Mon, 14 Sep 2020 10:07:25 +0000 s148275 7822@http://www.k-wave.org/forum/ <p>No I am currently not using the alpha_filter. </p> http://www.k-wave.org/forum/topic/pressure-wave-amplitudes-are-not-same-compared-to-matlab-computation#post-7813 Fri, 11 Sep 2020 13:30:17 +0000 Bradley Treeby 7813@http://www.k-wave.org/forum/ <p>Ok - I'll generate an issue. I can't promise when it will be done though!</p> <p>Are you also using <code>medium.alpha_filter</code>? </p> http://www.k-wave.org/forum/topic/pressure-wave-amplitudes-are-not-same-compared-to-matlab-computation#post-7811 Fri, 11 Sep 2020 13:18:41 +0000 s148275 7811@http://www.k-wave.org/forum/ <p>Hi Brad,</p> <p>Yes this would be really nice to have. The 3D simulation I am currently running takes much longer with the Maltlab solver. And since I am using <code>medium.alpha_sign</code> I cannot use the C++ code. I do not need the support for <code>medium.alpha_mode</code>.</p> <p>Best,<br /> Frank </p> http://www.k-wave.org/forum/topic/pressure-wave-amplitudes-are-not-same-compared-to-matlab-computation#post-7808 Fri, 11 Sep 2020 10:21:33 +0000 Bradley Treeby 7808@http://www.k-wave.org/forum/ <p>Hi Frank,</p> <p>It's not currently on the list - is it something that you need?</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/pressure-wave-amplitudes-are-not-same-compared-to-matlab-computation#post-7792 Tue, 08 Sep 2020 10:54:18 +0000 s148275 7792@http://www.k-wave.org/forum/ <p>Hi Brad,</p> <p>Are you planning to include <code>medium.alpha_mode</code> and <code>medium.alpha_sign</code> in the C++ code?</p> <p>Best,<br /> Frank </p> http://www.k-wave.org/forum/topic/pressure-wave-amplitudes-are-not-same-compared-to-matlab-computation#post-7712 Tue, 28 Jul 2020 09:04:49 +0000 Bradley Treeby 7712@http://www.k-wave.org/forum/ <p>Hi Subhajit,</p> <p>We have a pretty large test suite to make sure the output from the MATLAB code and C++ code are the same, although there are a few options (e.g., <code>medium.alpha_mode</code>) that are not supported by the C++ code. Do you generate the input file using the <code>&#39;SaveToDisk&#39;</code> option of <code>kspaceFirstOrder3D</code>? </p> <p>Brad </p> http://www.k-wave.org/forum/topic/pressure-wave-amplitudes-are-not-same-compared-to-matlab-computation#post-7681 Wed, 01 Jul 2020 20:26:47 +0000 subhajit 7681@http://www.k-wave.org/forum/ <p>Corrected as ...extend suggestions/comments on the... </p> http://www.k-wave.org/forum/topic/pressure-wave-amplitudes-are-not-same-compared-to-matlab-computation#post-7680 Wed, 01 Jul 2020 10:30:58 +0000 subhajit 7680@http://www.k-wave.org/forum/ <p>Hi,<br /> I was comparing the photoacoustic pressure waves computed by matalb and c++ binary(...-OMP.exe) under identical geometry and other conditions.The waveforms look almost similar except<br /> 1) the amplitude of the one computed by Matlab is 1.341 times of the other one<br /> 2)-OMP.exe computed waveform is little noisy. </p> <p>Grid: 128x128x128, Nt: 936, dt:1.818 ns, dx=dy=dz:10um. Medium: Heterogeneous, Max speed: 1540m/s</p> <p>I followed the example file in k-wave to prepare the hdf5 input file.</p> <p>It would be of great help if the forum members kindly extend suggestions/comment son the observed difference.<br /> Regards,</p> <p>- Subhajit </p>