Reduce source activity
This cathegory constitutes a broad number of measures that are aimed to influence the way an activity is carried out, so that noise is reduced. This might for example concern traffic speed, which can be approached from different angles. One is to enforce the rules (e.g. speed limits), an other is to find design solutions that affect certain behaviours (e.g. reduced lane size and shared space solutions). In the latter approach, a parallel can be drawn to the notion of environmental affordances1, a term which has also been applied to sound environments2.
1Gibson, J.J.. The ecological approach to visual perception. Hillsdale, New Jersey: Lawrence Erlbaum Associates, 1986.
2Thibaud, J.-P.. The Acoustic Embodiment of Social Practice. In: Karlsson, H. (ed.) Proceeding of Stockholm, Hey Listen!, June 9-13. Stockholm: The Royal Swedish Academy of Music, 1998.