FIG. 21.  Linear prediction spectra of the plosive burst for /b/, /d/, and /g/ before 16 different vowel nuclei. Each tracing is the average of six tokens of a CV syllable spoken by a single talker, after Klatt (1979b). Burst spectra for [d] and [g] display systematic changes associated with anticipatory lip rounding for a following rounded vowel, lower panels, and [g] appears to be palatalized before front vowels, top right panel.