Beatboxing is a form of vocal percussion primarily involving the art of mimicking drum machines, using one's mouth, lips, tongue, and voice. It may also involve vocal imitation of turntablism, and other musical instruments. To produces the different sounds, the Beatboxers use their vocal apparatus in a much wider and more complex way than its use in speech. This allows them to acquire a panel of rich and varied sounds. The Human Beatbox (HBB) is a very recent subject of study in phonetics. This study offers an exploratory study of pharyngolaryngeal articulatory behaviors using nasofibroscopy and electroglottography and an aerodynamic study in order to better understand the articulatory capacities and limits of the vocal tract.
HBB is characterized by two very interesting aspects (1) the complexity of the oro-pharyngo-laryngeal joints and the articulatory precision of the beatboxers and (2) the respiratory management which allows the artists to beatbox continuously without interrupting their performance. These two points, very characteristic of this technique, allow them to best imitate diverse and varied musical tones. The Human Beatbox is still little studied and the literature on this subject is quite limited. Percussive sounds (for example imitations of bass drums, hi-hat or snare) seem to be characterized by articulatory strategies, melodic sounds (for example wind instruments, strings) seem to be based on both articulatory and phonatory strategies, and finally, electronic sounds seem to mainly use complex phonatory strategies. Our objectives are to better understand the articulatory capacities and limits of the vocal tract at different levels (articulation capacities, sound production mechanisms, muscular and acoustic temporal relationships, strategies of efficiency...). It is possible to find clinical applications of the Human Beatbox in the context of congenital speech disorders (for example dyspraxia) or acquired (for example oro-pharyngo-laryngeal surgery of the partial glossectomy type).
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
OTHER
Masking
NONE
Enrollment
5
Laryngeal exploration performed using a flexible fibrescope while singing.
Electrography of glottal movement using the EG2-PCX2 system (Glottal enterprises) while singing.
Air flow measurement and acoustic signal recording while singing using the EVA2 system (SQLab-LPL, Aix en Provence, France)
Questionnaire on subject singing habits, the way it use and perceive the use of his body when singing.
Hopital Foch
Suresnes, Île-de-France Region, France
Describe and understand the production mechanisms in HBB
Measurement of the values of air pressure (Pa) during sound productions
Time frame: 1 day
Describe and understand the production mechanisms in HBB
Electroglottography iii) electroglottographic and acoustic with measurements of frequency and time acoustic parameters on acoustic analysis software.
Time frame: 1 day
Describe and understand the production mechanisms in HBB
Visualisation of larynx images
Time frame: 1 day
Study the articulation capacities of the human vocal tract and its biomechanical limits in BeatBox singers
Nasofibroscopy
Time frame: 1 day
Study the articulation capacities of the human vocal tract and its biomechanical limits in BeatBox singers
Oral and nasal aeromynamics measurement.
Time frame: 1 day
Study the articulation capacities of the human vocal tract and its biomechanical limits in BeatBox singers
Analysis of acoustic signal collected during laryngeal exploration
Time frame: 1 day
Measure aerodynamic and muscular temporal relationships to evaluate the strategies of efficiency, performance and "economy" of the structures of the vocal tract
Fibroscopy images compared to accoustic signal.
Time frame: 1 day
Measure aerodynamic and muscular temporal relationships to evaluate the strategies of efficiency, performance and "economy" of the structures of the vocal tract
Aerodynamic events compared to accoustic signal.
Time frame: 1 day
Relate the profile of the beatboxers collected by a survey and their articulation and aerodynamic capacities evaluated during the examinations
Qualitative comparison between an open survey and their articulation and aerodynamic capacities (fibroscopy and accoustic signal)
Time frame: 1 day
Evaluate the potential contributions of the study to the fields of research in linguistics of world languages, research on acquisition and / or clinical phonetics
Time frame: 1 day
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