039 to 0. 118 in depending on the maker. This hourglass shape, even though invisible to the naked eye, helps to accurate the pitch/scale discrepancy between the chalumeau and clarion registers perfect 12th. The diameter of the bore affects qualities similar to available harmonics, timbre, and pitch stability how far the player can bend a note in the manner required in jazz and other music. The bell at the base of the clarinet flares out to enhance the tone and tuning of the bottom notes. The fixed reed and fairly uniform diameter of the clarinet give the tool an acoustical behavior approximating that of a cylindrical stopped pipe. Recorders use a tapered inner bore to overblow at the octave when the thumb/register hole is pinched open, while the clarinet, with its cylindrical bore, overblows at the 12th. Adjusting the angle of the bore taper controls the frequencies of the overblown notes harmonics. Changing the mouthpiece's tip establishing and the length of the reed adjustments elements of the harmonic timbre or voice of the clarinet because this adjustments the rate of reed vibrations. Generally, the goal of the clarinetist when generating a valid is to make as much of the reed vibrate as possible, making the sound fuller, warmer, and potentially louder. The lip place and force, shaping of the vocal tract, choice of reed and mouthpiece, amount of air force created, and evenness of the airflow account for most of the clarinetist's capacity to manage the tone of a clarinet.