ETD Jumpiness (was Re: [CAUT] Sacrifice (was tuners-technology))

[Jeff Tanner]

On Thursday, March 3, 2005, at 12:55 PM, Porritt, David wrote:

> I have thought that the jumpiness in the SAT was due to the fact that 
> it
> listens to such high partials through most of the scale.

Hi partials - being one or two octaves above the fundamental, or the 
fundamental itself?

>   These higher
> partials can be squirrelly or sometimes very soft.
>

You can usually hear the reason the lights are jumpy.  More often than 
not, anchoring that bridge pin will clean up that offensive partial.

As far as soft goes, sometimes I will have a difficult time getting a 
reading on the 8th partial of F3 for the FAC calculation on some pianos 
- usually older Steinway Bs and Ds.  But you're not using that high of 
partials when tuning.

Jeff