--- In harmonic_entropy@y..., Carl Lumma <carl@l...> wrote:
> >> () On the harmonic entropy list, when we were listening to
chords of
> >> tones with harmonic content, at least two of us reported
hearing a
> >> "warbling", "pulsing" at a rate which could only have been
caused by
> >> the presence of virtual pitches (not combination tones).
> >
> >i don't remember this being our conclusion. could you point us to
> >this discussion again? perhaps on the harmonic entropy list
> >itself . . .
>
> See msg. number 174.
>
> -Carl

i don't see how the presence of virtual pitches would help explain
this. virtual pitches occur at the missing fundamentals of
approximate harmonic series. that would be at the "1" of the
9:10:11:15 chord.

meanwhile, it's obvious that i was stoned when i wrote that message.
in fact i remember it -- i was at ara's apartment late at night.
anyhow, the most prominent combinational tones at low volumes are of
the form 2*a - b. and 2*10 - 9 = 11. so there ya go. combinational
tones do seem to be at work, explaining the warbling.

should one of us report back to the tuning list on this?