QWERTY Caster - Universitat Pompeu Fabra

Dessign Issues (Pressing 1990)
for a realtime interaction music interface x
1. Physical variables carrying the information (e.g. position,
pressure, velocity, acceleration, etc.)
2. Dimensionality of control or degrees of freedom
3. Control modality (i.e. discrete or continuous, and its digital
quantization)
4. Design appropriateness: efficiency, ergonomics, motor and
cognitive loads, degree of sensory reinforcement and redundancy,
appropriateness of gesture to expression
5. Historical foundations: using an existing technique, modifying or
creating a new one
6. Psychological nature of control: perceived naturalness of the link
between action and response, exploratory or goal-oriented, etc.
7. Literalness of control (one-to-one, one-to-many, many-to-one,
unpredictability, response delay, time dependence)
Sergi Jordà, Music Technology Group
IUA, UPF – Barcelona, 2008