This work proposes a series of ternary scales to replace certain traditionally binary features. The focus is on the Inherent Voicing Scale (Voiceless Obstruent,
Voiced Obstruent, Sonorant), which replace [voice] and [sonorant]. Applications are made to assimilations, neutralization, and consonant mutation, providing natural accounts for a number of previously opaque processes. Other proposed scales are Consonant
Stricture (stop, fricative, approximant/voiced) and Vowel
Height (low, mid, high), which replace [continuant], [consonantal], [high] and [low].