Subject: Re: Ph.D. dissertation announcement: Sound Source Segregation From: Al Bregman <bregman(at)HEBB.PSYCH.MCGILL.CA> Date: Sat, 17 Dec 2005 03:33:30 -0500Dear Harry, Any chance that there's any biological relevance to John Murray's approach? Al ----- Original Message ----- From: "Harry Erwin" <harry.erwin(at)btinternet.com> To: "Al Bregman" <al.bregman(at)mcgill.ca> Sent: Saturday, December 17, 2005 3:18 AM Subject: Re: Ph.D. dissertation announcement: Sound Source Segregation > I always suggest this idea in my lecture to the computing students on > auditory localization. It's related to target motion analysis in > submarine sonar. My student, John Murray, has been doing something > similar and has shown that prediction of movement coupled with > movement of the array improves the SNR markedly. He's using an Elman > network instead of a HMM. > > On 17 Dec 2005, at 06:22, Al Bregman wrote: > > > Hi Nicoleta, > > > > Thanks for the announcement and making your thesis available > > online. I've > > read the abstract, though not the full thesis. > > > > It brought back to mind something that's been bothering me about > > the use of > > spatial location in separating sounds. Typically in studying spatial > > hearing in humans, we immobilize the head to a greater or lesser > > degree so > > that our subjects won't "cheat" by moving their heads. In doing > > so, we may > > be systematically ignoring an important cue for auditory scene > > analysis > > (ASA). Why do the subjects want to move their heads? Is it > > because such > > motions (as well as whole-body motions) cause the components from > > different > > sound sources to behave differently, making it easier to segregate > > them? > > > > Has anybody studied the role of head movements in ASA? > > > > Al > > > > -- > "The data (or the marks when teaching) are sacrosanct--they tell us > what actually happened." Harry Erwin, PhD > http://osiris.sunderland.ac.uk/~cs0her > > > > > > -- > "The difference between theory and practice is that, in theory, there > is no difference between theory and practice, but in practice, there > is." (Tom Vogl) > Harry Erwin > >