Robert Scott wrote: > > Frank, > > I did not mean to imply that RCT's were not properly calibrated. > Even though the separate quartz tone source supplied with the RCT > is inexpensive, it may still be very accurate. (After all, providing > a single accurate tone reference is the only job it has to do!) > I only raised the issue in order to highlight where the accuracy was > coming from. It cannot come from anything within a PC because the > makers of PCs and soundcards do not take the trouble to ensure that > any of their clocks have absolute accuracies better than 2 cents. > Any tuning program running in a general-purpose PC must be calibrated > at some time in their life to an external reference. PC tuning > programs do work off an internal clock in the computer, but only after > the program has taken into account the calibration error of that > internal clock. > > Frank Cahill wrote: > > >...I find that very interesting. If you are correct, there could > >be alot of RCTs that are not properly calibrated. I assumed that the > >RCT worked off an internal clock in the computer. > > -Bob Scott > Ann Arbor, Michigan I stand informed!! Yes, the external device should do a good job if it has been properly calibrated against a good source. What's most impressive about this device is that Dean, while once an engineering student, was never an engineer. Quite a job he's done. Now if I could just figure out how he found the time to design this thing. I'm having a heckof a time finding time to tune, write technical manuals, take care of a 9 yr old daughter AND....find time to practice aural tuning. -- Frank Cahill Associate Member, Piano Technicians Guild Northern Va
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