Several of my Low Whistles, for example an MK, a Goldie, a Burke, and who knows what else, came perfectly tuned to ET.DaveL wrote:
Please excuse the newbie question, but I had assumed that whistles were tuned to Just Intonation as I understood that ITM was based around that tuning.
Are some whistles tuned to an ET scale then?
On my Goldie I can play from Bottom D up to B in the 2nd octave and the needle doesn't move, straight up the whole time.
Seems that on Generation D's the F# is usually flat, which is where you want it for JI. I've carved out the holes on most/all of my Generations to give a strict ET scale.
You can move the pitch of notes around quite a bit on whistles with your blowing, so anybody with a good ear can play an ET whistle JI if he chooses, or visa versa.
And playing "in tune" is situational. Playing along with an uilleann piper and you'll probably want to be JI. Playing along with fretted strings and you'll want to be ET.
The differences are small, and as I've said the difference between an ET whistle and a JI whistle is two pieces of tape (one for Hole 2, one for Hole 5). That's because the JI scale of D Major needs B and F# to be 15 cents flat of their ET positions. Cover the top 1/4 of the hole (more or less) and Bob's your Uncle.
The other notes are nearly the same, well within the variation imparted by blowing slightly differently.
Seems to me that the difference between JI and ET is more a matter of theory than practice. (A professional tuba player told me that 30 years ago but I didn't believe him at the time).
For the theory part, here's a D Major scale in JI with the differences from ET
D 0
E +4
F# -14
G -2
A +2
B -16
C# -10
So what if your whistle is tuned that way but you're playing a tune in B minor? Certainly you don't want the tonic to be 16 cents flat? That's why ET was invented.