> degree in inharmonicity would not differ in the treble side among different models. Sorry, inh DOES vary but a very small change in speaking length makes a huge difference in inh. > I tried to make a point that you cannot hear by ear how much inharmonicity there is. True to a point. Once understanding inh and stretch and how it effects double and triple octaves I know what I am dealing with. That is experience coupled with understanding the effects of inh. That will come with time. > The stretch you can put up on above that is what you can try to hear. Doing more or less stretch than the piano calls for is difficult for me as an aural tuner but I can do it easily with an EDT. I am very easily confused so don't confuse me, please. > In the bass I try to do it but in the end: > checking myself by ear, I don't believe I do it > (Though stretching can be very healthy). If it is a good sounding bass you stretch. There can be no questioning of that. How MUCH you stretch is an issue that will keep us tuners stretching our heads for ever and three days. If you do not stretch the bass octaves the bass will sound constrained and constipated. If it sounds free and open you are stretching. I may stretch more or less than you do but that is a matter of taste and opinion not of science. There is an effect of stretch where the octave becomes louder than at any other setting. This "power point" is very narrow and one has to move the tuning hammer very small amounts to find it but once you have hard this occur you will search for it in every tuning. The effect is of the beginning of a beat that never resolves itself into a beat because the sustain does not remain long enough for it to resolve into a beat. You know that out of tune unisons sound louder than in tune unisons. The same is true for octaves so I intentionally use this effect to find that narrow point where I can create a louder octave with a beat that is too slow to hear. It is a matter of phasing. You can tune two strings so they sound loud and then change one string and you can make the sound diminish. This is a matter of the two strings being in phase and then out of phase. It is this phenomenon that I use in octave tuning and the octaves are stretched by a considerable amount. I have had other tuners tell me they like more and others have said they liked less stretch. The difference is a difference in esthetics not quality of tuning. So there. Now you have ME confused. Regards, Newton
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