Actually, I think the ear/brain does not make this distinction without pattern recogntion, in other words, the height impression to the extent that it arises from spectrum of the sound depends on what the ear/brain expects the actual sound to be. There is a similar effect about frontal versus rear sounds. A natural familiar type of sound source can be made to sound behind when played in front if it is spectrally modified in the way it would be if it were in fact coming from hehind! Height perception similarly plays off the known sound spectrum versus the perceived one to determine height. But for height it is pretty crude--7-8 kHz tends to sound up even if it is not. Cymbals float up in perception even though the sound is familiar in spite of the source being not up. This is true in reality as well as in recordings. Robert
On Sun, 1 Apr 2012, Augustine Leudar wrote:
I am getting a many opinions on this as possible and I have now heard various answers. It specifically relates to boosted band and, in this scenario, elevation cues in the median plane . Blauert's 1969 experiment showed that if an if a narrow band noise or sinusoid wave with a centre frequency of 8 khz is played to both ears equally the sound is generally localized above the head. My question is how does the auditory system distinguish between 8khz as a directional elevation cue or a boosted 8 khz that might be present in a soundsource directly in front of the listener ? So far I have been told its to do with binaular differences between the two ears (the directional bands may not be the same in each ear due to the different shapes of the pinna and can be compared, visual cues, envelope shapes) any clarification or alternatives would be great. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20120401/32fffd7b/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
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