Editing Acoustical engineering (section)

===Noise control===
{{main|Noise control}}

Noise control is a set of strategies to reduce [[noise pollution]] by reducing noise at its source, by inhibiting sound propagation using [[noise barrier]]s or similar, or by the use of ear protection ([[earmuffs]] or [[earplug]]s).<ref>{{cite book|last=Bies|first=David|title=Engineering Noise Control: Theory and Practice|year=2009|publisher=Spon Press/Taylor & Francis |isbn=978-0415487078}}</ref> Control at the source is the most cost-effective way of providing noise control. Noise control engineering applied to cars and trucks is known as [[noise, vibration, and harshness]] (NVH). Other techniques to reduce product noise include [[vibration isolation]], application of acoustic absorbent and acoustic enclosures. Acoustical engineering can go beyond noise control to look at what is the best sound for a product,<ref>{{cite web|last=University of Salford|title=Making products sound better|url=http://www.acoustics.salford.ac.uk/res/cox/sound_quality/|access-date=2013-05-21|archive-url=https://web.archive.org/web/20130724080408/http://www.acoustics.salford.ac.uk/res/cox/sound_quality/|archive-date=2013-07-24|url-status=dead}}</ref> for instance, manipulating the sound of door closures on [[automobile]]s.