Grave (phonetic)

Phonemes can be described as grave from both an articulatory or acousitc perspective. In the articulatory perspective 'grave' refers to phonemes of periferal articulation such as labial and velar consonants, and back vowels In contrast, acute phonemes include dental and palatal consonants, and front vowels. From the acoustic perspective, acute sounds have a concentration of energy in the higher spectrum versus graves which have a concentration of energy in the lower spectrum.