[pianotech] What is bloom,

[Dale Erwin]

Ron
  How about sound pressure, partial balance and clarity.  The short subjective version is that when I puck a string to test sustain I alwasy try  to pluck lightly with the same amount of force. If I pluck lightly and it just seems to be like a horse that wants to run free and easy...I like it...a lot. If I pluck a string lightly and there seems to be a resistance to vibrating freely...then that dog just won't hunt.
 Does that clear it all up?


 

 

Dale S. Erwin
www.Erwinspiano.com
Custom restoration
Ronsen Piano hammers
Join the Weickert felt Revolution
209-577-8397
209-985-0990



 

 

-----Original Message-----
From: Ron Nossaman <rnossaman at cox.net>
To: pianotech at ptg.org
Sent: Fri, Mar 18, 2011 5:39 pm
Subject: Re: [pianotech] What is bloom,


On 3/18/2011 3:23 PM, David M. Porritt wrote: 
> I am very aware of how our expectations affect what we see, hear, 
> believe etc. Could “bloom” be a result of different expectations? If we 
> are expecting decay like this: 
 
-Simulate steep decline graphic- 
 
> since that is what we get on most pianos, but if we get decay like this: 
 
-Simulate shallow decline graphic- 
 
> Our brain could interpret it as bloom since it is more than we expected. 
 
I agree, from my questionable experience. Reshaping the tonal envelope to produce a less dramatic impact spike, and a shallower transition into dwell, tapering gradually into decay gives the subjective impression of more sound (average) for longer. I've always much disliked the term "bloom" for this effect, since it doesn't, so "bloom" isn't really descriptive and I consider it misleading. It just dies more gradually, gracefully, and less traumatically, like UL approved electrical products. 
 
And it's still nowhere near the phenomenon JD brought up. 
Ron N 

 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20110318/7ad1de57/attachment.htm>