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Líon torthaí a aimsíodh
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Tiúb a bhfuil ceann amháin de i dteagmháil leis an aer mórthimpeall agus an ceann eile dúnta. Gabhann fréamhnóta le píb mhúchta agus má dhéantar forshéideadh is féidir nótaí níos airde a sheinm.
Tube that communicates freely with the ambient air at one end and is completely closed at the other. The fundamental is approximately an octave lower than that given by a pipe of equal dimensions open at both ends.