Text: The Pedal Tone The pedal tone is a unique characteristic of brass instruments. It is the note which is at the fundamental frequency of the harmonic sequence of the instrument, but it is not a resonant frequency of the air column. When the bell effect raises the lower resonances of the closed tube, the lowest resonance is actually not used, being out of tune with the rest of the notes. However, if the player's lips are vibrated at the pedal tone frequency, all the harmonics above it contribute and produce a tone at this pedal tone pitch. It is sometimes called a fictitious fundamental, but for the bass brass instruments, it is quite strong and useful.

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