Sounds to me like a cross-talk cancelling thing; with decorrelated material (reverb, sometimes crowd noise) it can produce startling surround effects. If this were the case, you should find that it occurs for some listening positions more than others (TVs with these algorithmns built in usually produce about 3 lobes - dead ahead and either side, about 30-40 degrees off the centre line. If you have a look at the audio settings, you'll probably find that the option for surround (is it SRS or something?- I forget) is selected - and if you changed to straight stereo, the effect should disappear.
It doesn't usually work that well in a corner, and should be more pronounced if you brought the telly away from close-by reflective surfaces. The effect can be quite pleasing, but sometimes is disconcerting. Cheers ppl Dr Peter Lennox School of Technology University of Derby, UK tel: 01332 593155 e: p.len...@derby.ac.uk -----Original Message----- From: sursound-boun...@music.vt.edu [mailto:sursound-boun...@music.vt.edu] On Behalf Of Richard Dobson Sent: 07 August 2012 12:09 To: Surround Sound discussion group Subject: Re: [Sursound] Can anyone explain this ? Re odd things heard: is anyone here a regular watcher of "The Big Bang Theory" show (E4, and on various cable channels)? There is a standard "sting" (a sort of semi-pitched noise cluster cum whoosh sort of thing, little more than a second in length) used to transition from one scene to the next. My stereo TV (full HD but otherwise cheap 32" LCD type) is in the corner of my lounge, and is in general not notable at all for significant stereo effects, much less anything more "immersive". Obviously, the built-in speakers (a generous 2 * 6W) are the typical small tinny things. However, that sting, fleeting as it is, seems to produce a significant amount of pseudo-surround, very much ~not~ localised to the TV, such that every time it is really rather surprising. One day I will have to record and analyse it, but I haven't got around to that yet. Does anyone have any idea if this is just a random emergent feature of the sound (TV or room artifact), or has that effect been designed into it in some discernible way? Richard Dobson .. > sometimes (depending on content), the result will be surprising, but > tricks like these tend to fail on arbitrary content. > _______________________________________________ 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
