Participant T3, singing a messa di voce on the pitch C4 (~261.63 Hz) into an Earthworks M30 omnidirectional microphone at a mic-to-mouth distance of 5 cm.
Participant T3, singing a messa di voce on the pitch C4 (~261.63 Hz) onto an Edison Home Phonograph (ca. 1903) at a mic-to-mouth distance of 40 cm.