http://www.k-wave.org/forum/topic/about-the-simulation-frequency-range-of-the-source Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 01:07:40 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/about-the-simulation-frequency-range-of-the-source#post-5680 Wed, 14 Sep 2016 19:20:31 +0000 uhultrasound 5680@http://www.k-wave.org/forum/ <p>Hi Brad,</p> <p>Thank you very much for your help and the links, have a good day.</p> <p>John </p> http://www.k-wave.org/forum/topic/about-the-simulation-frequency-range-of-the-source#post-5678 Wed, 14 Sep 2016 08:51:40 +0000 Bradley Treeby 5678@http://www.k-wave.org/forum/ <p>Hi John,</p> <p>If you open the k-Wave help in the MATLAB help browser, you can find two examples of time reversal using <code>kspaceFirstOrder2D</code> (<a href="http://www.k-wave.org/documentation/example_pr_2D_tr_line_sensor.php">2D Time Reversal Reconstruction For A Line Sensor</a> and <a href="http://www.k-wave.org/documentation/example_pr_2D_tr_circular_sensor.php">2D Time Reversal Reconstruction For A Circular Sensor</a>).</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/about-the-simulation-frequency-range-of-the-source#post-5677 Tue, 13 Sep 2016 23:01:28 +0000 uhultrasound 5677@http://www.k-wave.org/forum/ <p>Hi Liwen, </p> <p>Thank you very much for the information and suggestions. BTW, I was wondering if you know how to use "time reversal" with kspaceFirstOrder2D since I didn't find an example for it?</p> <p>Many thanks and have a good day.</p> <p>John </p> http://www.k-wave.org/forum/topic/about-the-simulation-frequency-range-of-the-source#post-5675 Mon, 12 Sep 2016 10:11:43 +0000 Liwen Xu 5675@http://www.k-wave.org/forum/ <p>Hi,I have successfully used the kspaceFirstOrder2D to simulate an acoustic source with frequency 20hz,and you should change the number of grid points and the grid point spacing. </p> http://www.k-wave.org/forum/topic/about-the-simulation-frequency-range-of-the-source#post-5673 Sun, 11 Sep 2016 01:07:23 +0000 uhultrasound 5673@http://www.k-wave.org/forum/ <p>Hi,</p> <p>Could you please let me know what the the simulation frequency range of the source? For example, I was wondering if the kspaceFirstOrder2D or kspaceFirstOrder3D could be used to simulate an acoustic source with frequency as low as e.g. 1 Hz to 100 Hz (i.e. it is not an ultrasound source but it is an acoustic source)?</p> <p>Many thanks and have a good day.</p> <p>John </p>