Subject: Re: Roughness in audio and vision From: Dan Stowell <dan.stowell@xxxxxxxx> Date: Mon, 16 Feb 2009 11:01:05 +0000 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>Hi Bryan - Bryan Pardo wrote: > Some colleagues of mine are interested in the relationship between > roughness in visual images and audio images. They sent me the following > questions they were thinking about in hopes that I might be able to > provide some references to get them started. I figured this is just the > mailing list to get some pointers to papers. If any of these questions > make you think of a paper or two, I’d appreciate your emailing the > reference. > > > > 1) Do we have a reliable method to measure the roughness of a given a > natural sound or image? For images I wouldn't know (maybe some measure of fractal dimension? http://dx.doi.org/10.1103/PhysRevA.39.1500 ) but for sound, I keep finding papers where auditory roughness is said to be related to fast amplitude modulation (AM), e.g. Joder et al (2009), TASLP http://dx.doi.org/10.1109/TASL.2008.2007613 which references a thesis I haven't read (Eronen 2001) as the source of their method for measuring AM in the 10--40 Hz range. > 2) How could one synthesis sound clips (and images) with ascending or > descending order of roughness? If that kind of AM does indeed cause auditory roughness then synthesising is easy, just change the depth of the AM. > 3) How can acoustic roughness influence the perceived roughness of the > vision? Good question! Dan -- Dan Stowell Centre for Digital Music School of Electronic Engineering and Computer Science Queen Mary, University of London Mile End Road, London E1 4NS http://www.elec.qmul.ac.uk/department/staff/research/dans.htm http://www.mcld.co.uk/