tuning in noisy environments.

[John Ross]

Hi List,
I find the use of earplugs to reduce the overall sound, works to cut
out the interference. The piano beats come through, just fine. Mind
you, I do use a SATlll.
I use the earplugs from Pianotek, they cut the sound down by 12db, and
only cost around $12 U.S.
Regards,
John M. Ross
Windsor, Nova Scotia.
jrpiano@win.eastlink.ca
----- Original Message -----
From: "Sarah Fox" <sarah@gendernet.org>
To: "Pianotech" <pianotech@ptg.org>
Sent: Sunday, November 24, 2002 2:45 PM
Subject: Re: tuning in noisy environments.


| Hi Don,
|
| > The soundboard of a piano will pick up the extranious noise.
*grin* just
| > like a big ear drum.
|
| True.  However, it's not the size of the eardrum that counts but
rather its
| acoustic impedance.  There is virtually no impedance mismatch
between the
| wood of the sounding board and the solid materials of the contact
| microphone, hence high efficiency of sound conductance.  There is a
very
| large impedance mismatch between air and wood, hence a very low
efficiency
| of sound conductance between those media.  It's like being
underwater.  The
| surface of the pool is HUGE.  Yet it's hard to hear anyone talking
above
| water owing to the impedance mismatch.  Try the contact mic, and I
bet
| you'll find it works.  The only question is whether you want to work
tied
| down to a cord, wearing headsets.
|
| Peace,
| Sarah
|
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