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.
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