Best Timbre for Demonstrating 12TET M3s

> Huh? I would have thought the opposite, since the main source of
> beating/roughness of the 400-cent M3 is due to the 4th partial of the
> higher note clashing with the 5th partial of the lower note.

Yip, that's what I would have thought too, but that's not what ex-
periment seems to bear out. I have also managed to convince more people
that a 13-some-odd-cent sharp M3 sounds raunchy more often with a
clarinet timbre than with any other.

Either way though, timbre unequivocally affects perception of tuning.

>> Huh? I would have thought the opposite, since the main source of
>> beating/roughness of the 400-cent M3 is due to the 4th partial of the
>> higher note clashing with the 5th partial of the lower note.

> Yip, that's what I would have thought too, but that's not what ex-
>periment seems to bear out. I have also managed to convince more
people
>that a 13-some-odd-cent sharp M3 sounds raunchy more often with a
>clarinet timbre than with any other.

> Either way though, timbre unequivocally affects perception of
tuning.

It would be nice to understand this apparently backwards result, though.
Bill Sethares, can you help us?