Subject: Re: Image-source model with consideration of air absorption From: Emmanuel Vincent <emmanuel.vincent@xxxxxxxx> Date: Tue, 22 Nov 2011 11:50:16 +0100 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>Dear Junfeng, Roomsim (http://media.uws.ac.uk/~campbell/Roomsim/) as well as our command-line software Roomsimove (for moving sources)(http://www.irisa.fr/metiss/members/evincent/Roomsimove.zip) account for this. Emmanuel -- Emmanuel Vincent METISS Project-Team INRIA Rennes - Bretagne Atlantique Campus de Beaulieu, 35042 Rennes cedex, France Phone: +332 9984 2269 - Fax: +332 9984 7171 Web: http://www.irisa.fr/metiss/members/evincent/ On 11/22/2011 11:28 AM, Junfeng Li wrote: > Dear list, > > I am now considering to generate room impulse response (RIR) using the well-known image-source method. However, I found that the traditional image-source method only considered the absorption of enclosure surfaces, without the consideration of air absorption. However, the air absorption should be also an important factor which affect the simulated RIR. > > To reformulate the image-source method, the Green function （ exp(jwd/(4*pi*d) ） in the free field should be extended to that with the consideration of air absorption effect. I searched this problem for some days. However, I did not find any reference. > > Could anyone point some references on this issue or the (source code of) improved image-source method that implemented this idea? > > Thank you so much in advance. > > Best regards, > Junfeng