| > What is a "strike tone"? >holding down the F2 and Ab2 >so their dampers are off the strings, then strike C5 Gadzooks what a gaff. (besides counting the partials wrong) Ghosting. (or sympathetic vibration) Now I get it. Here I am thinking C5 is the "double 10th" of Ab2 and the "triple 5th" of F2. "What does that have to do with a minor 3rd". Good thing I asked because otherwise, "who you gonna call". Obviously I was not trained in using ghosting to tune. I never did heed the 6--5 3rds because they sound muddy to begin-with and don't test like the 5--4 3rd using the 5--4, 5--3, 5--2, 5--1 coincident partials. My piano being a foot and half shorter than a B has a very muddy F2 m3. But ghosting it with C5, the partials beat loud and clear even though two of the unisons, Ab2 and C5 are out. What a "swimmy beat". Hmmm---makes you wonder how far apart strings can be before they can't excite each other in sympathetic vibration and does this have anything to do with "coupled motion" ? Also I wonder if unisons can be tested by ghosting. ---ric ============= But come, fill a flagon, for it will crave sometime to tune the harp; and nought pitches the voice and sharpens the ear like a cup of wine. ------- Ivanhoe ============= ---- Original Message ----- From: Michael Jorgensen <Michael.Jorgensen@cmich.edu> To: <pianotech@ptg.org> Sent: Wednesday, May 30, 2001 2:18 AM Subject: Re: Strike Tone not Yielding same beatspeed | Hi ric, | C5 is the lowest coincident partial or lowest common harmonic | between F2 and Ab2. The idea is that by holding down the F2 and Ab2 so | their dampers are off the strings, then strike C5. This starts the | partial singing without adding to the tone or confusing the beat rate, | since C5 has a damper. This technique is most useful to beginning tuners | to hear beats or locate partials more easily. | -Mike | | | Richard Moody wrote: | | > What is a "strike tone". What is C5 supposed to do with the beat | > rate of F2--Ab2? | > Why C5? Why not C4 or C3? Do these then produce differences from | > C5? ---ric | > | > ----- Original Message ----- | > From: Michael Jorgensen <Michael.Jorgensen@cmich.edu> | > To: <pianotech@ptg.org> | > Sent: Tuesday, May 29, 2001 7:25 AM | > Subject: Strike Tone not Yielding same beatspeed | > | > | Hello, | > | Steinway B, F2-A flat 2 minor third tested using C5 as strike | > tone | > | yields a significantly faster beat speed than listening to the | > beatspeed | > | by playing the minor third by itself.
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