http://www.k-wave.org/forum/topic/include-acoustic-attenuation-so-that-the-acoustic-field-attenuates-over-distance Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:40:23 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/include-acoustic-attenuation-so-that-the-acoustic-field-attenuates-over-distance#post-8507 Mon, 25 Apr 2022 19:11:51 +0000 bencox 8507@http://www.k-wave.org/forum/ <p>Hi alan, </p> <p>Which simulation function are you using? In <code>pstdElastic3D</code> you can set the absorption using <code>medium.alpha_coeff_compression</code> and <code>medium.alpha_coeff_shear</code>.</p> <p>Best wishes<br /> Ben </p> http://www.k-wave.org/forum/topic/include-acoustic-attenuation-so-that-the-acoustic-field-attenuates-over-distance#post-8474 Fri, 11 Mar 2022 16:47:57 +0000 alan.keenan 8474@http://www.k-wave.org/forum/ <p>I am using the Bernstein and Spicer equations for shear wave acoustic field calculations due to pulsed laser excitation in the non ablative regime.<br /> D_S = - s_T ^ 4 * cos(2 * theta) .* sin(2 * theta) ./ ...<br /> (s_T ^ 4 * (1 - 2 * cos(theta) .^ 2) .^ 2 + 4 * s_T ^ 3 .* cos(theta) .^ 2 .* sin(theta) .* sqrt(s_L ^ 2 - (s_T * cos(theta)) .^ 2));<br /> Beam spreading is present in the resulting images, however, there is no acoustic attenuation with distance. Is it possible to introduce a function that will attenuate the acoustic field with distance? The material model is aluminium. </p>