It really seems to me that sound transmission in wood is a product of grain structure, curing process and coatings. There is a guy up here who builds guitars worth 50K to 100K that make a Martin sound small. He was telling a guy all the different prep he does to the surface. I think he builds up layers of a super hard surface over specially cured, treated and cured again wood. Thanks Keith On Fri, Oct 1, 2010 at 2:35 PM, Delwin D Fandrich <del at fandrichpiano.com>wrote: > > > *From:* Keith Roberts [mailto:keithspiano at gmail.com] > *Sent:* Friday, October 01, 2010 2:04 PM > *To:* Delwin D Fandrich; College and University Technicians > *Subject:* Re: [CAUT] Bridge root material > > > > At first I thought it was dim light and yellowing shellac that had confused > me. So I sanded it down a little and it looks like Oak to me and my buddy. > It is a German Piano and so must be of European origin. > > > > But then again, Hemholtz used holes to isolate frequency and project sound > directionally. That holes are a sound absorbing medium is not true. They are > a heat absorbing as insulation but all insulations do not make great sound > barriers. Still, it's probably not as good > > KR > > > > Seriously, I can’t see it mattering all that much. They both have about the > same mass, stiffness and internal resistance and not much else seems to > matter. > > > > Delwin D Fandrich > > Piano Design & Fabrication > > 620 South Tower Avenue > > Centralia, Washington 98531 USA > > del at fandrichpiano.com > > ddfandrich at gmail.com > Phone 360.736.7563 > > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/caut.php/attachments/20101001/44db5a8e/attachment-0001.htm>
This PTG archive page provided courtesy of Moy Piano Service, LLC