Review of Wireless Acoustic Sensor Networks for Environmental Noise Monitoring in Smart Cities

Table 1

State of the art of WASN projects for noise monitoring.

Year	Name of the project	LAeq	Acoustic	Sound (not ad hoc)	Low-cost (ad hoc)	Low-cost (ad hoc)
						sig. proc.	level meter	high-capacity	low-capacity
2005	Telos
2007	Santini
2008	SensorNet
2010	Hakala
2011	Burdwan
2011	IDEA
2012	SENSEable
2013	Xiamen
2013	MESSAGE
2014	Smart sound monitoring
2015	Barcelona NMN
2015	RUMEUR
2015	FISONIC				†
2016	CENSE
2016	UrbanSense
2016	DYNAMAP
2017	SONYC
2018	Medusa				^†
2018	MONZA

^†Despite the fact that the authors detail it as a low-cost platform, its price is substantially higher than the other low-cost platforms.