ITD and IID you mean for sound localization (660ms) ?
The threshold for ITD seems to be determined at 10 microseconds (at 1kHz).
That ITD= 10us (corresponds to 100kHz).
I guess that is where the 'we need at least 100kHz bandwidth comes from' even when we are just able to hear to 16kHz (for medium aged folks, older farts like me are lower) yet that 10us limit does not seem to be age dependent.
Of course temporal resolution to 10us can still be reached with bandwidths < 100kHz for this we don't need 192kHz sample frequencies.
we can still localize sounds very well with just a RBCD bandwidth it seems.
> 1500Hz timing differences could not be 'determined' which would be important for localization.
However, the 10us limit (22us at 1.5kHz) still suggests that the hearing can detect those timing differences.
Why would the brain only use this available 'info' for localization ?
Have no idea how that relates to perception and enjoyment of music and how the ears/neurons/brain handles that.
All the research is usually done with test tones and (sometimes suspect) transducers.
I think it is more complex than the numbers suggest when music is involved, instead of localization with test tones only.
Interesting indeed nonetheless.