This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment > The primary acoustic function of the ribs is to transfer sound cross=20 > grain more or less as fast as it otherwise buzzes along the grain. Really? Sez who? How? I have a nasty feeling this has been discussed ad-nauseum in the past, = but I gotta ask. Terry Farrell ----- Original Message -----=20 > Prompts me to ask a bit about an idea being thrown around in an off = list=20 > dialoug I am having with a couple folks. The idea is not mine but it=20 > sounds intriguing. Let me throw this at you (and whomever else might = be=20 > interested to comment). I'll let the fellow who threw this at me speak = > up for him/her self if they so choose. >=20 > The primary acoustic function of the ribs is to transfer sound cross=20 > grain more or less as fast as it otherwise buzzes along the grain. = What=20 > if we could make a soundboard with enough crown support perpendicular = to=20 > the bridge without support from the ribs (or nearly as much as we use = > in todays instruments) ? >=20 > The idea that strikes me as being able to perhaps do exactly this is = to=20 > allign the grain perpendicular to the bridge, and construct a=20 > pre-crowned soundboard panel of several laminants, all with grain = going=20 > the same direction. With the grain going perpendicular to the bridge = and=20 > what crown support the unribbed soundboard would have, cross grain=20 > ribbing would be able to do their acoustic job and provide a bit of=20 > extra support to the curvature of the wood while being of much smaller = > dimensions. In addition... the bridge itself would function like the=20 > ribs in speeding sound cross grain. It might be a way of approaching=20 > the different requirements of the bass and high treble areas. >=20 > Cheers > RicB ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/95/38/8e/98/attachment.htm ---------------------- multipart/alternative attachment--
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