[pianotech] What is bloom,

[PAULREVENKOJONES at aol.com]

In a message dated 3/18/2011 9:08:15 P.M. Central Daylight Time,  
david at davidandersenpianos.com writes:

I can't believe that it's just Erwin and I who pluck strings, in the  
method described below, to assess soundboard health. All this  speculative
sorta scientific wondering is missing the point. Good soundboards produce  
a bloom or a swell, a strengthening pulse, an added sustain, when the string 
 is plucked, usually within 2 seconds of the pluck. 

Dave, I've been doing this for years, but my "rule" is the 1 or 2 second  
rule---does it pop at one or two seconds? After 2 seconds is a bad sign and  
almost always with little energy. 2 seconds for the midrange, and 1 second 
for  the treble. Make sense?
 
P
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