On Thu, 24 Nov 2016 03:00:52 -0800 (PST), Phil Allison
wrote:

Eiron wrote:


If your head is in a fixed position then it is very difficult, even with
two ears, to locate sounds.



** To really *locate* an invisible sound source, you need to walk around and find it. But that is NOT the question.

One can usually nominate the direction of a source, which IS the topic, with the head held still long as the sound discontinuous and has high frequency components.

Stereo sound is heard perfectly by listeners with still heads, or even wearing headphones.



.... Phil





That is the essence of it. To be easily located, the sound needs to
have a lot of different frequency content - preferably in the form of
clicks. You can locate clicks easily in a reverberant space with many
speakers. Play a low-ish frequency sine wave through those same
speakers, and it is mostly a matter of luck whether you can locate it.

d

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