Editing Mechanical engineering (section)

===Acoustical engineering===
{{main|Acoustical engineering}}

Acoustical engineering is one of many other sub-disciplines of mechanical engineering and is the application of acoustics. Acoustical engineering is the study of [[Sound]] and [[Vibration]]. These engineers work effectively to reduce [[noise pollution]] in mechanical devices and in buildings by soundproofing or removing sources of unwanted noise. The study of acoustics can range from designing a more efficient hearing aid, microphone, headphone, or recording studio to enhancing the sound quality of an orchestra hall. Acoustical engineering also deals with the vibration of different mechanical systems.<ref>{{cite web |url=http://learn.org/articles/What_is_the_Job_Description_of_an_Acoustic_Engineer.html |title=What is the Job Description of an Acoustic Engineer? |work=learn.org}}</ref>