A technique in which the characteristics of imposed acoustic waves are measured as a function of temperature after passing through a substance (and/or its reaction product(s)) whilst the substance is subjected to a controlled temperature program.
Source:
PAC, 1985, 57, 1737. 'Nomenclature for thermal analysis - IV (Recommendations 1985)' on page 1740 (https://doi.org/10.1351/pac198557111737)