Resonance of Consonants: /s/ Resonance of the /s/ sound can be modeled after a tube open at both ends (half-wave resonator) in series with a tube open at one end (quarter-wave resonator). The uniform tube open at both ends represents the tongue palate constriction for /s/. It is approximately 2.5 cm. Long. The uniform tube open at one end (quarter-wave resonator) represents the area in the oral cavity in front of the constriction and is 1 cm long. Area between constriction and lips /s/ constriction 2.5 cm 1 cm Calculate the resonance characteristics of /s/