selection gestures • A gesture with no sound (preparation) ß Ex: selecting a data bank ß Putting the fingers on a guitar
Decision (or excitation) gestures • A gesture that makes a sound with parameters given at a fixed time ß Ex: hitting a key on a keyboard ß Ex: crossing a plane
Modulation gestures • A gesture that makes a sound with parameters evolving with time ß Ex: moving a pedal ß Ex: moving a hand in the air
Expressivness of musical gestures • Expressivness of sound or of gesture? • Rather say « gestures adapted to a musical expressivity »
• The importance of details in music ß nuances , climates ß Accentuations and changes ß Micro-accidents: octaviation, appogiatures, portamento, trilles
Bi-manual contexts • Coopération: ß Making a knot ß A goal is in common
• Coordination: ß Play keyboards (piano, computer) ß Identical task
• Independance: ß Different goals but something in common ß drumming
Some rules • Difference between the preferred hand and the other one • Precedence of the non-preferred hand • The non-preferred hand makes a reference space and the preferred hand plays in this reference space
Sensory Feedback • sonic • Visual • Haptic
2. DiY instruments and bimanuality
Photosonic optical Synthesis • nice and
simple instrument
• works with light
• no electronic synthesis
Disk 752
Sounds of an optical instrument
The photosonic emulaor
The associated gestures Electronic musical instrument Vocal Filter
Square wave Filter
MSP implementation of the filter 100 200 300 400
500 600 700
800 900
Optical filter
1000 100
200
Digital filter 300
400
500
600
700
A 256 F!IR filter MSP module has been written which takes its coefficients from the filter matrix
800
900
1000
« Les gestes de la Photosonie » • • • •
navigation amplitude Filtering octaviation
Musical situations …
Musical situations (following)…
The Voicer
Interpolation between 4 vowels
Circular control of pitch
Les gestes du Voicer • Amplitude with the tip of the pen • Pitch with the rotations • Vowels space
Voicer on stage
Gloves: same as guitar? • Signs=selection • Plectrum=decision • But also: bowing or aftertouch
Sign dictionary
Gesture to Pitch Mapping
Musical example
Instrument: “corde filtrante” Forces on the string Sound input: noise, sample,…
String physical parameters
« Les gestes de “la corde filtrante” » • Touching on Tactex surface ß (Creating a shape through a dynamic system)
• Control with a pen : modulation Percussion with the two mains
Virtuality (pointing fingers) • Sélection of an objet • Activation with a click • Modulation, visual feeback helps in giving a referential space
Visual feedback • Moving objects as a musical meaning
Inventing gestures, • Inventing new gestures • Musical Improvisation • Coherence when playing with other performers
Composing with gestures, • • • •
How to write gestures How to describe the expressivness How to define sonic spaces How to write a score
transmit gestures (pedagogy) • What to transmit: gesture or sound ? • Pedagogy: link between the performer and his instrument
Characteristics of a digital musical instrument • • • • •
gesture + music + real time Be playable on stage adequation with musical objectives Adaptable to different musical situations Be able to write for it
Instrument evaluation • • • •
Define the context Find the mode of expression of the mapping Have an idea about the musical possibilities Good/bad instrument? ß Pratical and ergonomic ß the goal : to explore at best the sonic universe
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