Trumpet Sounds - Alto Saxophone
The usable range of the trumpet sounds technique on the alto saxophone is between the low B♭ and the high C two octaves higher. Beyond this point, the technique becomes too strenuous on the lips to produce stable pitches.
The alto saxophone, being the historically preferred instrument of choice for composers, is a fair choice for composing with the trumpet sounds since the producible pitch range is more extensive than the other three common saxophones. It is much easier to start with learning how to make trumpet sounds on the alto saxophone as well. The aperture of the neckpiece is neither too small (as is the case for the soprano) nor too large (as the tenor and baritone). For this reason, performers can comfortably learn how to produce sound and work on tone quality starting with the alto saxophone then moving to the less comfortable instruments, if they so desire.
With regards to repertoire, many saxophone quartet pieces employ trumpet sounds for the alto saxophone. Examples are…
A graph of the hertz output has been added below. When plotted, the curve that is produced is representative of an exponential curve with an R squared value very close to 1. This means that the representative model is accurate and within an acceptable range.