Today, many computational techniques of form-finding use the term design with the term research. Thus, architectural studios become more and more like laboratories for design experiments. This study proposes a design experiment called “The Sound Motion Streaks Project” where the sound can be used as generative computational data and applied to digital form finding studies. Design process relies on an idea that sound as an external force can produce or deform shapes according to its influence. The first phase of the process is to make physical experiments on the sound and see its influences on granularand fluid materials. We can say that, in these physicalexperimentations, there is a knowledge transmission from physical todigital medium that we can use as design parameters on software. Indigital software, the sound can be a force field and manipulate digitalmatters such as particles, curves and meshes. The form-finding methodof the Sound Motion Project is constituted by all physical and digitalexperiments, and applied in an urban area in order to discuss itsarchitectural potentials. For instance, all material events in the areadepend on duration and movement of digital tools, thus the notion ofform and/or space become kinetic. Kinetic reactions bring out a newunderstanding of space and form which consists of motionlessboundary, translatability, rhythmicity, differentiated densities andheterogeneity. Also this generative approach gives architects manypotential solutions for architectural forms.