http://www.k-wave.org/forum/topic/simulating-transducer-elements-and-elevation-focus-using-source-sensor-classes Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:27:45 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/simulating-transducer-elements-and-elevation-focus-using-source-sensor-classes#post-7557 Sat, 06 Jun 2020 14:27:28 +0000 Bradley Treeby 7557@http://www.k-wave.org/forum/ <p>Quick follow up - I've just posted a <a href="http://www.k-wave.org/forum/topic/alpha-version-of-kwavearray-off-grid-sources">new array class</a> for k-Wave which will possibly be of use here. </p> http://www.k-wave.org/forum/topic/simulating-transducer-elements-and-elevation-focus-using-source-sensor-classes#post-7554 Sat, 06 Jun 2020 13:42:58 +0000 Bradley Treeby 7554@http://www.k-wave.org/forum/ <p>Hi João,</p> <p>Yes, you would feed all 40 grid points the same signal, use the same points as sensor points, and then average these to get the sensor signal.</p> <p>The elevation focussing is embedded deep into the code as part of the time loop (a different index to the driving signal is used for each grid point). There is some explanation in the k-Wave manual.</p> <p>Hope that helps,</p> <p>Brad </p> http://www.k-wave.org/forum/topic/simulating-transducer-elements-and-elevation-focus-using-source-sensor-classes#post-7503 Mon, 18 May 2020 02:36:59 +0000 jackYANG 7503@http://www.k-wave.org/forum/ <p>Hi jr20,<br /> If your grid is finely meshed, I think you can use the most central point to signal to the surrounding points,this seems to produce some slight errors.The second question you want can be found in the kwave booklet,in addition, I think fcous can achieve the sound beam you want. </p> http://www.k-wave.org/forum/topic/simulating-transducer-elements-and-elevation-focus-using-source-sensor-classes#post-7500 Fri, 15 May 2020 17:40:07 +0000 jr20 7500@http://www.k-wave.org/forum/ <p>Hi all,</p> <p>I recently started using the source and sensor classes instead of the kWaveTransducer one. All my simulations use 3D grids. My first question is how would you place the sensors and sources to simulate the height of a transducer element? Say, if one element is 40 grid points tall, then should I feed all 40 source points that make up this element with the same pressure signal? Should all of these 40 source points be sensor points as well? And if so, should the signal detected by the 40 sensors be averaged to achieve the signal detected by the entire element? </p> <p>My next question is regarding elevation focusing. I know kWaveTransducer uses additional delays to simulate an elevation focussed beam. Can you shed some light on how to compute these delays to achieve the correct focusing? Or point to some lines in code where that is computed, as I can't seem to find them...</p> <p>Kind regards,</p> <p>João </p>