Multi-Dimensional Variation in Adult Speech as a Function of Age

We present a multidimensional acoustic report describing variation in speech productions on data collected from 500 francophone adult speakers (20 to 93 y.o.a.) as function of age. In this cross-sectional study, chronological age is considered continuous variable while oral productions, reading and speech-like tasks, are characterized via 22 descriptors related voice quality, pitch, vowel articulation vocalic system organization, time-related measures temporal well maximal performances tasks. first analysis, we detail how each descriptor varies according the speaker, for male female separately. second explore is, turn, predicted by combination all descriptors. Overall, results confirm that with increasing age, show more instability, sex-dependent pitch changes, slower rates, repetition rates less complexity effects performance A notable finding study some these changes throughout adulthood other appear either at old or early adulthood. Chronological appears only moderately indexed speech, mainly through rate parameters. discuss relation notion attrition possible factors play, an attempt better capture nature “age”.