Hi Bernard, The accutuner, so I am told, does not use this method of pitch measurement.(FFT) Why do you believe that "firm blow" tuning is less accurate than "soft tuning"? At least one technician I know listens to the very beginnings of the sound--and uses the information his ear (or tuning device?) gathers during this "prompt" phase to tune the piano. As to accuracy it is 0.015 not 0.1 of a cent. At 01:40 AM 1/7/2006 +0100, you wrote: >Most?modern ETD?s are doing fast fourier transformation (FFT)?for pitch >calculation. >A good?aural tuner tune with a firm struck,?to catch also the transient phase >of the sound at higher volumes. Low volume tuning is like not voicing the >left pedal, it leaves?the transient phase untuned. But sometimes it may >happen, that the pianist also use volumes above mp... >In some ETD manuals you find sometimes statements of "0.1 Hz accuracy" Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. Non calor sed umor est qui nobis incommodat mailto:pianotuna@yahoo.com http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK, S4S 5G7 306-539-0716 or 1-888-29t-uner
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