This set of pitches is too sparse to be musically useful for brass instruments therefore, the bells and mouthpieces of brasses are crafted to adjust these pitches. Brasses with a bell do not naturally vibrate at this frequency.Ī closed cylinder vibrates at only the odd members of its harmonic series. Its name comes from the foot pedal keyboard pedals of a pipe organ, which are used to play 16' and 32' sub-bass notes by pressing the pedals with the player's feet. A pedal tone has the pitch of its harmonic series' fundamental tone. Pedal tones (or pedals) are special low notes in the harmonic series of brass instruments. Problems playing this file? See media help.
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