http://www.k-wave.org/forum/topic/the-direct-wave Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 17:20:57 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/the-direct-wave#post-6453 Sun, 13 May 2018 19:49:34 +0000 Bradley Treeby 6453@http://www.k-wave.org/forum/ <p>Hi George,</p> <p>If you have a scatterer in an otherwise homogeneous background medium, then I think this is a sensible way to decompose the direct and scattered wave. If the background medium also changes, then probably not (the direct wave will not be the same in the two cases).</p> <p>I'm not sure I follow what you mean by the coefficient of the direct wave?</p> <p>Brad </p> http://www.k-wave.org/forum/topic/the-direct-wave#post-6434 Mon, 23 Apr 2018 06:20:21 +0000 LYM 6434@http://www.k-wave.org/forum/ <p>Hi Brad,</p> <p>Thank you for your reply. I have tried your method and it helps me a lot. But I still have two questions.<br /> (1) The medium is changed. Can we ignore the difference between the two direct wave?<br /> (2) How to calculate the coefficient of the direct wave before subtracting it? </p> <p>Thanks your time very much!</p> <p>George </p> http://www.k-wave.org/forum/topic/the-direct-wave#post-6419 Wed, 18 Apr 2018 09:18:19 +0000 Bradley Treeby 6419@http://www.k-wave.org/forum/ <p>Hi George,</p> <p>Could you run a simulation in a homogeneous medium first (i.e., without the scatterer), and then subtract this from your simulation?</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/the-direct-wave#post-6413 Sat, 14 Apr 2018 09:43:26 +0000 LYM 6413@http://www.k-wave.org/forum/ <p>Hi,</p> <p>First, thanks for the tool, it really helps me a lot with my research. </p> <p>I want to research that how the scattered wave change with time by sensor. Is there any fast way to remove the influence of the direct wave. </p> <p>Best,<br /> George </p>