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Re: Upper joint cork

Author: Gordon (NZ)
Date: 2009-11-08 09:41

When cork pads are on the very small key cups, covering very small tone holes, and tone holes with a raised sealing line, as on oboes, the slapping sound of the cork is greatly reduced. The largest tone holes on an oboe, and most tone holes on a clarinet are a somewhat different ball game. Some particularly firm bladder pads I have been using are particularly slappy on the low keys of clarinets - just as slappy as cork, and about as unforgiving.

"As for clacking sounds, it is nominal and I for one got used to it within a short few weeks. NO ONE ELSE will every hear it."

A close microphone might.

On another tack, cork is made from a closed-cell structure. So I wonder why its thickness does not alter with changes in air pressure, like the closed container in a barometer does. Perhaps those cell walls are sufficiently permeable for the pressure inside the cells to equalise to atmospheric.

Post Edited (2009-11-08 09:42)

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