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Interesting question regarding perceived note onset

Suppose we have 2 (or more) musical notes, played with some kind of standard musical-instrument onset.  Let’s use, say, piano, guitar, and maybe a woodwind.


What is the analytic result (looking at the analytic  envelopes of the signals) in terms of time offset (or not) that results  in the notes being perceived as exactly simultaneous?


First, with notes nearby (to get dL’s) and then with widely spread notes (in frequency, not time), to get a sense of how the various bandwidths of the cochlear filtering and the bandwidth of the instrument play off against each other.


Interestingly I’m not actually aware of any clear results of this sort, although they may exist, I don’t know of them.


Has anyone heard of such a thing?





James D. Johnston  (jj@xxxxxxx)


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