THE RECORDER'S HOLES
The holes of early recorders were undercut to improve the sound quality of the instrument.
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Undercutting helps the flow of air through the open holes, as shown in the picture below and thus gives more sound and better speech. The blue lines and arrows show the movement of the air molecules.

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Philippe BOLTON, le Grand Portail, F-84570 VILLES SUR AUZON, France TEL : +33 4 90 61 86 11
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