Before experimenting is done the periodicals should be researched to see what if any has been already published. So that is why I asked if any on the list knows of articles published of experiments done on piano string inharmonicity specifically of a string clamped between two steel blocks. This could be compared to the research of piano strings attached to soundboards of which there are quite a few articles in scientific journals. A practical outcome would be if there is "significant" differnce between the string vibrating by itself vs the one vibrating on a soundboard. If there are no significant differences then the claims of soundboard or hammers affecting inharmonicity would needed to put to the same formal proof. Another intersting experiment would be to establish the margin of error of any given ETD or other instrument used to measure inharmonicity. ---ric ps You asked how often I was asked to tune a string not connected to a soundboard and actually I did that many times. The Yamaha CP 70 and 80 had no soundboards, only electronic pickups. This would not be a good instrument to study inharmonicity unless there are strings in the CP that are same dimensions as acoustic pianos. ----- Original Message ----- From: Ron Nossaman <RNossaman@KSCABLE.com> To: <pianotech@ptg.org> Sent: Monday, February 04, 2002 8:06 AM Subject: Re: Piano acoustics Ric wrote | >Yes! but I thought what if the inharmonicity of a vibrating piano wire is | >different than when connected to a bridge and piano soundboard? Ron replies | And that would matter how, practically? How often are you called upon to | tune a string not connected to a bridge and soundboard? | | Ric rote | >I would like to see experiments on piano wire clamped | >between two huge steel blocks with lengths appropriate to piano speaking | >lengths to see if the vibration (esp the partials is different). These | >experiments might | >determine if the soundboard affects inharmonicity. | Then go for it. You can be the one that adds that data to the literature. | Ron N
This PTG archive page provided courtesy of Moy Piano Service, LLC