http://www.k-wave.org/forum/topic/whats-the-value-of-mediumalpha_coeff-for-40-khz-sound-waves-in-air Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 00:20:14 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/whats-the-value-of-mediumalpha_coeff-for-40-khz-sound-waves-in-air#post-8401 Tue, 28 Dec 2021 02:21:41 +0000 KailingYI 8401@http://www.k-wave.org/forum/ <p>This similar question is already exist in the forum: <a href="http://www.k-wave.org/forum/topic/absorbtion-coefficents#post-522" rel="nofollow">http://www.k-wave.org/forum/topic/absorbtion-coefficents#post-522</a> </p> http://www.k-wave.org/forum/topic/whats-the-value-of-mediumalpha_coeff-for-40-khz-sound-waves-in-air#post-8399 Tue, 21 Dec 2021 10:16:47 +0000 KailingYI 8399@http://www.k-wave.org/forum/ <p>Hello,</p> <p>I'm simulating the case that the collimated double sound beams produce the difference frequency wave in air [See JASA: Westervelt 1963, Berktay 1965]. but What's the value of medium.alpha_coeff for 40 kHz sound waves in air? How can I get the value for other freq.? </p>