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A sound baffle is a construction or device which reduces the strength (level) of airborne sound. Sound baffles are a fundamental tool of noise mitigation, the practice of minimizing noise pollution or reverberation. An important type of sound baffle is the noise barrier constructed along highways to reduce sound levels in the vicinity of properties. Sound baffles are also applied to walls and ceilings in building interiors to absorb sound energy and thus lessen reverberation.^[1]

Highway noise barriers

The technology for accurate prediction of the effects of noise barrier design using a computer model to analyze roadway noise has been available since the early 1970s. The earliest published scientific design of a noise barrier may have occurred in Santa Clara County, California in 1970 for a section of the Foothill Expressway in Los Altos, California.^{[citation needed]} The county used a computer model to predict the effects of sound propagation from roadways, with variables consisting of vehicle speed, ratio of trucks to automobiles, road surface type, roadway geometrics, micro-meteorology and the design of proposed soundwalls.

Interior sound baffle design

Since the early 1900s, scientists have been aware of the utility of certain types of interior coatings or baffles to improve the acoustics of concert halls, theaters, conference rooms and other spaces where sound quality is important. By the mid-1950s, Bolt, Beranek and Newman and a few other U.S. research organizations were developing technology to address sound quality's design challenges. This design field draws on several disciplines including acoustical science, computer modeling, architecture and materials science. Sound baffles are also used in speaker cabinets to absorb energy from the pressure created by the speakers, thus reducing cabinet resonance.

In 1973, Pearl P. Randolph, a school bus driver in Virginia, won a new school bus in a national contest held by Wayne Corporation for the suggestion that sound baffles be installed in the ceiling of school buses. In 1981, they were first made mandatory by the state of California.

Vehicle exhaust sound baffles

Baffles are also found in the exhaust pipes of vehicles, particularly motorcycles.

References

^ "What is an Acoustic Baffle?". soundcontroltech.com. Retrieved 2016-12-16.

[1] "What is an Acoustic Baffle?". soundcontroltech.com. Retrieved 2016-12-16.

[1]

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+{{Short description|Device or construct that prevents or attenuates loud noises}}
-A '''sound baffle''' is a construction or device which reduces the strength (level) <!-- not the "intensity" --> of [[airborne sound]]. Sound baffles are a fundamental tool of [[noise mitigation]], the practice of minimizing [[noise pollution]] or [[reverberation]]. An important type of sound baffle is the [[noise barrier]] constructed along [[highways]] to reduce sound levels at properties in the vicinity. Sound baffles are also applied to walls and ceilings in building interiors to [[absorption (acoustics)|absorb]] sound energy and thus lessen [[reverberation]].
+{{Refimprove|date=December 2016}}
+[[File:Absorbing panels, Downtown Recording.jpg|thumb|Sound baffles on the wall of a recording studio]]
+A '''sound baffle''' is a construction or device which reduces the strength (level) <!-- not the "intensity" --> of [[airborne sound]]. Sound baffles are a fundamental tool of [[noise mitigation]], the practice of minimizing [[noise pollution]] or [[reverberation]]. An important type of sound baffle is the [[noise barrier]] constructed along [[highways]] to reduce sound levels in the vicinity of properties. Sound baffles are also applied to walls and ceilings in building interiors to [[absorption (acoustics)|absorb]] sound energy and thus lessen reverberation.<ref>{{Cite web|url=http://soundcontroltech.com/baffles-banners-clouds/what-is-an-acoustic-baffle/|title=What is an Acoustic Baffle?|website=soundcontroltech.com|access-date=2016-12-16}}</ref>
 ==Highway noise barriers==
-{{main|Noise barrier}}
+{{Main|Noise barrier}}
-The technology for accurate prediction of the effects of noise barrier design using a [[computer model]] to analyze [[roadway noise]] has been available since the early 1970s. The earliest published scientific design of a noise barrier may have occurred in [[Santa Clara County]], [[California]] in 1970 for a section of the [[Foothill Expressway]] in [[Los Altos, California]]. The county used a computer model to predict the effects of sound propagation from [[roadways]], with variables consisting of [[vehicle]] [[speed]], ratio of trucks to automobiles, road surface type, roadway [[geometric]]s, micro-[[meteorology]] and the design of proposed [[soundwalls]].
+The technology for accurate prediction of the effects of noise barrier design using a [[computer model]] to analyze [[roadway noise]] has been available since the early 1970s. The earliest published scientific design of a noise barrier may have occurred in [[Santa Clara County]], [[California]] in 1970 for a section of the [[Foothill Expressway]] in [[Los Altos, California]].{{Citation needed|date=November 2018}} The county used a computer model to predict the effects of sound propagation from [[roadways]], with variables consisting of [[vehicle]] [[speed]], ratio of trucks to automobiles, road surface type, roadway [[geometric]]s, micro-[[meteorology]] and the design of proposed [[soundwalls]].
 ==Interior sound baffle design==
-{{main|Architectural acoustics}}
+{{Main|Architectural acoustics}}
+{{More citations needed section|date=November 2022}}
-Since the early 1900s scientists have been aware of the utility of certain types of interior coatings or baffles to improve the [[acoustics]] of [[concert halls]], [[theaters]], [[conference rooms]] and other spaces where the quality of sound is important. By the mid 1950s [[Bolt, Beranek and Newman]] and a few other U.S. research organizations were developing technology to address the design challenges. This design field draws on several disciplines including [[acoustical science]], computer modeling, [[architecture]] and [[materials science]]. Sound baffles are also used in [[speaker cabinets]] to absorb [[energy]] from the pressure created by the speakers thus reducing cabinet [[resonance]].
+Since the early 1900s, scientists have been aware of the utility of certain types of interior coatings or baffles to improve the [[acoustics]] of [[concert halls]], [[theaters]], [[conference rooms]] and other spaces where sound quality is important. By the mid-1950s, [[Bolt, Beranek and Newman]] and a few other U.S. research organizations were developing technology to address sound quality's design challenges. This design field draws on several disciplines including [[acoustical science]], computer modeling, [[architecture]] and [[materials science]]. Sound baffles are also used in [[speaker cabinets]] to absorb [[energy]] from the pressure created by the speakers, thus reducing cabinet [[resonance]].
 In 1973, Pearl P. Randolph, a [[school bus]] driver in [[Virginia]], won a new school bus in a national contest held by [[Wayne Corporation]] for the suggestion that sound baffles be installed in the ceiling of [[school buses]]. In 1981, they were first made mandatory by the [[state of California]].
 ==Vehicle exhaust sound baffles==
-{{main|Muffler}}
+{{Main|Muffler}}
 Baffles are also found in the exhaust pipes of vehicles, particularly motorcycles.
 ==See also==
+{{Commonscat|Sound baffles}}
 *[[Noise pollution]]
 *[[Noise health effects]]
+==References==
-<!-- Unsourced image removed: [[Image:73 Wayne Lifeguard at Virginia State Capitol.jpg|275px|right|thumb|A new 1973 [[Wayne Corporation|Wayne]] Lifeguard [[school bus]] won in national contest for safety ideas is presented to the winning Mrs. Elwood (Pearl P.) Randolph, a driver from [[Goochland County, Virginia|Goochland County Public Schools]] at [[Virginia State Capitol]]]] -->
+{{Reflist}}
+{{DEFAULTSORT:Sound Baffle}}
-[[Category:Acoustics]]
 [[Category:Ceilings]]
 [[Category:Noise pollution]]
-[[Category:Noise reduction]]
+[[Category:Noise control]]
-[[Category:Sound]]
-[[cs:Ozvučnice]]