Pipa organa merupakan alat yang menggunakan kolom udara sebagai sumber bunyi. Gerakan udara menimbulkan getaran pada lubang pipa sehingga menimbulkan gelombang stasionar. Frekuensi yang timbul tergantung dari panjang pipa
Pipa organa dibedakan menjadi dua:
1. Pipa organa terbuka.
2. Pipa organa tertutup
A. formulasi pipa organa terbuka.
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