Pathways2Sustainability presentation (Calgary 2013):
Acoustic ecology tends to be overlooked by modern planners, designers, and architects. The European Union, however, is keeping an eye on urban racket as a possible ‘unfunded liability’ with future consequence for insurers and public health care. In Canada, there is no equivalent monitoring.
Modern HVAC (heating ventilation & air conditioning) systems while super efficient, cost effective, and ‘green’ nevertheless can be a source for unusual and persistent sound. For instance, Infrasound (below the range of hearing) silently affects physical matter. Infrasound can also create the conditions for ‘standing waves’ of audible sound that can be a nuisance, or worse, harmful to human health.
Don Hill demonstrates a sound fix to remediate unpleasant noise—if you can't fix it, feature it!