http://www.k-wave.org/forum/topic/sensor-directivity-simulation-in-3d Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:06:54 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/sensor-directivity-simulation-in-3d#post-234 Tue, 13 Sep 2011 15:59:23 +0000 WXia 234@http://www.k-wave.org/forum/ <p>Hi Brad,</p> <p>The disk streaming feature is indeed great for solving part of my problem. The problem has been nicely solved if I want to simulate all the steps (the signals generation, propragetion, detection and reconstruction). </p> <p>For my case, I want to use the k-wave only for the time reversal reconstruction of measured signals. The directivity of the transducer is considered as a weight fator. In this case, to simulate the directivity using large detector will not solve the problem.</p> <p>Regards,<br /> Wenfeng </p> http://www.k-wave.org/forum/topic/sensor-directivity-simulation-in-3d#post-232 Fri, 09 Sep 2011 10:28:42 +0000 Bradley Treeby 232@http://www.k-wave.org/forum/ <p>Hi Wenfeng,</p> <p>What aspect of using a large sensor array uses too much memory for your application? Is it because you are using a very large number of sensor points as well as time points? We have implemented a simple disk streaming option in the next release (which will be available sometime next month) so that the complete sensor data doesn't need to be stored in memory. This may be of some help.</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/sensor-directivity-simulation-in-3d#post-231 Fri, 09 Sep 2011 10:20:36 +0000 WXia 231@http://www.k-wave.org/forum/ <p>Hi Ben,</p> <p>Thank you for your reply!</p> <p>Using a large sensor to incorporate directivity requires too much memory when considering transducer array. </p> <p>I was thinking how to modify the main function kspaceFirstOrder3D to define the directivity function for each element as you have done in the 2D case using a sinc function. Could you help me understand your code and where and how you have made the modification for directivity in 2D case.</p> <p>Thanks!<br /> Wenfeng </p> http://www.k-wave.org/forum/topic/sensor-directivity-simulation-in-3d#post-229 Wed, 07 Sep 2011 17:46:00 +0000 bencox 229@http://www.k-wave.org/forum/ <p>Hi Wenfeng,</p> <p>There's currently no equivalent to <a href="http://www.k-wave.org/documentation/example_sd_sensor_directivity_2D.php">Sensor Element Directivity in 2D Example</a> in 3D, although you can incorporate directivity by explicitly using a large sensor, as in <a href="http://www.k-wave.org/documentation/example_sd_directivity_modelling_3D.php">Modelling Sensor Directivity in 3D Example</a>.</p> <p>Hope that helps,</p> <p>Ben </p> http://www.k-wave.org/forum/topic/sensor-directivity-simulation-in-3d#post-225 Wed, 24 Aug 2011 12:35:01 +0000 WXia 225@http://www.k-wave.org/forum/ <p>Dear Ben and Brad,</p> <p>I found that the k-wave toolbox can incoporate the sensor directivity function in 2D case accurately, but not in 3D. </p> <p>If I want to simulate in a 3D case, how can I incoporate the directivity function?</p> <p>Thanks in advance!<br /> Wenfeng </p>