Electromyographic analysis of lip and face muscles in beatboxing
Résumé
Muscular activations of lip and face muscles have been studied while performing beatbox sounds in comparison to speech sounds. Five trained beatboxers were recorded for various tasks involving the production of beatboxed sounds (kick, hi-hat, and rimshot) and related spoken syllables ([pu] for kick, [ti] for hi-hat, and [ka] for rimshot). Activations of orbicularis-oris lip muscle and zygomaticus-major face muscles were recorded by surface electromyography (EMG) during the production of isolated and repeated sounds in both beatboxing and speaking condition. Sound pressure level was much greater in beatboxing than in speaking. As expected, bilabial sounds kick and [p] involved higher levels of orbicularis muscle activation than the other sounds studied. This activity was significantly higher for kick than for [p]. A difference in lip and face muscular activity between beatbox and speech was not found for hi-hat and rimshot, even though the boxemes were produced louder than the consonants at same place of articulation. These results underline the value of beatbox exercises for working on labial and facial praxis, and on speech intelligibility
Origine | Fichiers produits par l'(les) auteur(s) |
---|