Etienne - there are several things wrapped up in that - have a google on "doppler illusion" + john neuhof, also, "auditory looming"
But srictly, doppler isn't a perceptual cue for something approaching at al - it's a cue for something passing - that is, going from the state of approaching to that of departing. The rate of shift downwards in frequency can also be an important distance (range) cue - though not one for the important "coming-towards-me" class of information. cheers Dr Peter Lennox School of Technology, Faculty of Arts, Design and Technology University of Derby, UK e: p.len...@derby.ac.uk t: 01332 593155 ________________________________________ From: sursound-boun...@music.vt.edu [sursound-boun...@music.vt.edu] On Behalf Of etienne deleflie [edelef...@gmail.com] Sent: 24 February 2013 22:30 To: Eric Carmichel; Surround Sound discussion group Subject: Re: [Sursound] Saga of the Subs > > ELC: Visual cues may play part in this ability, too, but I fully agree > with you: The sound-source direction is unambiguous in certain situations. > This is why I wish to include multiple subs in my forthcoming experiments. > Another common myth is how much the Doppler Effect plays in our perception > of an object moving towards or away from us. A car moving towards us will > have a constant, albeit upwardly shifted, frequency. There is no frequency > change until the moment the car passes. Note that I selectively use the > word frequency, not pitch. Perceived pitch DOES change, but is a function > of increasing intensity, not a constantly-changing frequency. do you mean increasing intensity of the whole frequency spectrum, or just the increasing intensity of the higher frequencies? Higher frequencies are more perceivable, but that will be a function of a change in frequency spectrum, more than an increase in intensity. Would it not? Etienne -- http://etiennedeleflie.net -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20130225/383622c3/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound _____________________________________________________________________ The University of Derby has a published policy regarding email and reserves the right to monitor email traffic. If you believe this email was sent to you in error, please notify the sender and delete this email. Please direct any concerns to info...@derby.ac.uk. _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
