http://www.k-wave.org/forum/topic/boundary-setting Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 08:56:39 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/boundary-setting#post-5160 Sun, 19 Jul 2015 13:09:02 +0000 Bradley Treeby 5160@http://www.k-wave.org/forum/ <p>Hi Kaiming,</p> <p>The number of time steps and their spacing is set by <code>kgrid.t_array</code>, which is set to <code>&#39;auto&#39;</code> by default. In this case, k-Wave tries to choose something sensible based on your inputs. However, it is straight forward to set your own values - see section 3.2 in the k-Wave manual for more details.</p> <p>For perfectly reflecting boundaries (sound soft or sound hard), there are a few ways you might enforce a boundary as discussed in <a href="http://www.k-wave.org/forum/topic/room-enclouse-acoustic-simulation">this post</a>.</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/boundary-setting#post-5155 Sat, 18 Jul 2015 19:40:09 +0000 jarvis 5155@http://www.k-wave.org/forum/ <p>hi,</p> <p>I'm doing some research on photoacoustic, and I need to set a boundary in my project. I want to know whether change medium properties like sound speed or density is the only way to simulate this kind of problem.There is one problem when I use this method, when I set a very low sound speed like (100m/s) the program has to run about five minutes to give out the result and I only need the first 10 seconds data. So, if there is any way to cease the simulation before it end or set simulate time? </p> <p>Thanks for developing such a useful toolbox! XD</p> <p>Kaiming </p>