  The lyric career of Maria Callas, though exceptional, is also noteworthy for
its brevity. The first signs of downturn appeared at the age of 36 and her
voice fell silent at only 40. Though the literature has massively commented on
this premature worsening, few analyses of its characteristics have been made
public so far. The purpose of our study was to realise a perceptual and
acoustical analysis of recorded arias by the artist at the climax to the fall.
The audible impairments were first verbally described, and then compared to
acoustical observations based on spectrographic analyses and
fundamental-frequency measurements.
