These sounds are produced by the hybrid wind instrument with a lip-reed excitation and by an entirely simulated wind instrument. The
mouthpiece parameters are varied so as to evaluate both attack and
sustained sounds over the stable operation range of the hybrid
instrument.
These results are discussed in depth in my thesis on the development and evaluation of the hybrid wind instrument. LR stands for lip-reed, GZ stands for "gamma, zeta" evaluation and WQ stands for "omega, Qr" evaluation.