http://www.k-wave.org/forum/topic/kspacefirstorder3dg-output-pressure Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:07:30 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/kspacefirstorder3dg-output-pressure#post-9208 Thu, 17 Apr 2025 03:13:18 +0000 hyeongyu 9208@http://www.k-wave.org/forum/ <p>Hello, this is hyeongyu.</p> <p>I am using K-wave to declare source masks and am using the simulation well.</p> <p>Thank you for creating such a great program.</p> <p>However, I have a question, so I decided to post on this forum.</p> <p>When I look at the KspaceFirstOrder3DG function, which is the function I use most often, the output is pressure.</p> <p>I tried two different experiments. </p> <p>First, I implemented a flat-circle aperture with the same size as the source mask. </p> <p>Second, I implemented a concave circle aperture with the same size as the source mask.</p> <p>The source used the same-amplitude sine wave.</p> <p>I applied a time delay to focus the waves at the same location, but the intensity at the focused point was weaker with the concave aperture. </p> <p>I had expected that the concave transducer would show stronger intensity due to directivity, but the results are different. What could be causing this? </p>