Feedback

In the CMI model, we have separated feedback in two parts: [2] [4]

• Primary feedback - consisting of visual feedback, tactile, kinaesthetic and proprioceptive feedback and primary auditory feedback as provided directly by the input device.


Specifically, Cadoz [4] defines the hand perception properties as:

• Simple cutaneous tactile perception: the elementary form of touch, that tells us about the temperature or the state of an object's surface.
• Tactile-kinesthetic perception: the one that gives us information about an object's form, orientation, distance and size, due to different palpation strategies, exploratory movements and the evolution of the information sent by different cells of the skin, muscles and joints.
• Proprioceptive perception: the one that allows the perception of weight, the trajectories and movements of an object, by sensible receptors in articulations, together with vestibular receptors (inner ear).
He considers that "the tactile-proprio-kinesthetic sense gives information relative to an object's temperature, pressure and state of its surface, its strengthen, softness, form, orientation, its distance and its size, its weight, articulate structures, its plasticity properties or deformability and finally its movement" [4].
 
• Secondary feedback - the secondary auditory feedback, i.e., the sound actually generated by the instrument.

Let's finish the section on gestures and sensors by referencing a sensor classification done at the Pedagogy Department at IRCAM, in conjunction with the Groupe de Discussion sur le Geste Musical (GDGM).
 

Wed Feb 10 10:07:20 MET 1999