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Re: Roughness in audio and vision
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
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
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
Centre for Digital Music
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