摘要: The “singing formant” is a high spectrum envelope peak near 2.8 kHz characteristic of vowel sounds produced in male Western opera and concert singing. An acoustical model the vocal tract capable generating such provided that three conditions are met: (1) cross‐sectional area pharynx must be at least six times wider than larynx tube opening. If so, acoustically mismatched with rest tract, an extra formant added to transfer function. (2) sinus Morgagni wide relation tube. This may tune frequency value between frequencies third fourth formants normal speech. (3) piriformes wide. reduces fifth about 3 kHz. X‐ray studies raised lowered showed these fulfilled when lowered. Thus, lowering, typical ...