[pianotech] Finger Cymbal Sounds Answer

[Steven Hopp]

Ron O and others,

 

Thanks for the suggestions regarding the other options and the rebuild needs for this piano.  The concert is actually to try to raise money for a new Steinway D.  So I don't know where the money would come from for a rebuild.

 

Anyway, regarding muting the duplex.  I am going to listen for a weak sustain for my own learning ears.  The reason muting is necessary is I think the pianist would find the sound disturbing when he played.  For me this is much more important than the sustain as long as it is not so pronounced to be offensive.  I play pretty well and it bothers me.  

 

By the way it is a C7B.  

 

Regarding the profs ears....He is 28.  

 

Also the glue on the string thing instead of a mute I might try because it will look better and I don't have time to get the other part suggested.

 

In reality, I am just trying to make this piano sound and play as well as possible.  The prof is happy and if the pianist on Sunday is happy and the audience is pleased then my job is done.  I must say I am happy because the results are good much in part to the things I have learned and studied from PTG seminars and conventions and the priceless nature of this list.  

 

Many Thanks,

 

Steven Hopp
 
> Date: Sat, 24 Oct 2009 08:24:46 +1100
> To: pianotech at ptg.org
> From: sec at overspianos.com.au
> Subject: Re: [pianotech] Finger Cymbal Sounds Answer
> 
> Steven,
> 
> >Thanks to all for the suggestions. In the end it was duplex noise.
> 
> I've been following this thread, expecting it to be duplex noise. If 
> the C7 is thirty years old I think it will be a C7B. If it hasn't 
> been re-strung it will be due for it. But it likely will have a dead 
> board in the first capo string section. Furthermore, the scale 
> lengths at F21 are far too short in this piano (no 7 foot piano with 
> a plain wire F21 can work), so it would benefit from a tenor bridge 
> if and when it is rebuilt. The C7F was a major scaling improvement, 
> with a 23 note bass which resulted in G#23, the first note on the 
> long bridge, having a percentage of break at around 36% (the same as 
> the 183cm F21 first long bridge note on the S&S model D). The note 
> F21 on the C7B had a percentage of break in the low twenties. It was 
> gutless on that note and refused to stay in tune if the weather dared 
> change. Just turning on the air conditioning in the room was enough 
> to completely stuff the tuning. All the C7 pianos before the C7F 
> broke at E20/F21 and were a scaling mess, whereas the C7F is quite a 
> respectable instrument compared to many other offerings in the 7 foot 
> class.
> 
> >Once muted everything was fine.
> 
> Well sort of. The muting will tend to kill the duplex noise, but it 
> will also be damping all energy which bleeds across the capo to the 
> duplex segment. This will result in less sustain for those notes 
> which have damped duplex segments.
> 
> > I thought it was in relation to my filing and voicing but I now 
> >realize that we had just moved this piano from a proffessors small 
> >office to an auditorium. I believe the acoustics are what helped 
> >pronounce the noise which was probably already present in the small 
> >room but was not as audible? I will know for sure when we move it 
> >back after the recital Sunday.
> 
> Indeed. Its likely that the professor's room be will less lively at 
> around 3.5K, relative to the auditorium, which will allow you to hear 
> the duplex noise more easily in the auditorium.
> 
> >It is interesting that the proffesor did not hear the noise until I 
> >pointed it out to him while explaining the "funny" mute job in the 
> >non speaking length of the strings.
> 
> The prof's ears might have done a bit more work than yours, and he 
> very likely has considerably more roll off. Older ears, in general, 
> are less likely to hear duplex noise.
> 
> Ron O.
> -- 
> OVERS PIANOS - SYDNEY
> Grand Piano Manufacturers
> _______________________
> 
> Web http://overspianos.com.au
> mailto:ron at overspianos.com.au
> _______________________
 		 	   		  
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