81:
647:
laser vibrometer type tests are often conducted on the body in white structures enabling the fast acquisition of a large number of measurement points with a good spatial resolution. However, testing a complete vehicle is mostly infeasible, requiring evaluation of every subsystem individually, hence limiting the usability of this technology in a fast and efficient way. Alternatively, structural vibrations can also be acoustically measured using particle velocity sensors located near a vibrating structure. Several studies have revealed the potential of particle velocity sensors for characterizing structural vibrations, which accelerates the entire testing process when combined with scanning techniques.
656:
1425:
377:
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350:. Single-, double- and triple-honeycomb designs achieve relatively greater degrees of sound damping. The primary soundproofing limit of curtains is the lack of a seal at the edge of the curtain, although this may be alleviated with the use of sealing features, such as hook and loop fastener, adhesive, magnets, or other materials. The thickness of glass will play a role when diagnosing sound leakage.
412:(MLV) is used to dampen or weaken sound waves between layers of mass. Use of a viscoelastic damping compound or MLV converts sound waves into heat, weakening the waves before they reach the next layer of mass. It is important to use multiple layers of mass, in different widths and density, to optimize any given soundproofing treatment. Installing soundproof drywall is recommended for its higher
517:
438:
681:(FHWA) in conjunction with State Highway Administration (SHA) adopted Federal Regulation (23 CFR 772) requiring each state to adopt their own policy in regards to abatement of highway traffic noise. Engineering techniques have been developed to predict an effective geometry for the noise barrier design in a particular real-world situation. Noise barriers may be constructed of wood,
25:
206:, absorb noise by friction within the cell structure. Porous open cell foams are highly effective noise absorbers across a broad range of medium-high frequencies. Performance can be less impressive at lower frequencies. The exact absorption profile of a porous open-cell foam will be determined by a number of factors including cell size,
626:
high-energy sound sources in play when the vehicle is in use. There are many complex noises created within vehicles which change with the driving environment and speed at which the vehicle travels. Significant noise reductions of up to 8 dB can be achieved by installing a combination of different types of materials.
608:
For educators and students, improving the sound quality of an environment will subsequently improve student learning, concentration, and teacher-student inter-communications. In 2014, a research study conducted by
Applied Science revealed 86% of students perceived their instructors more intelligibly,
419:
Walls are filled with mineral wool insulation. Depending on the desired level of treatment, two layers of insulation may be required. Outlets, light switches, and electrical boxes are weak points in any given soundproofing treatment. Electrical boxes should be wrapped in clay or putty and backed with
345:
Residential sound programs aim to decrease or eliminate the effects of exterior noise. The main focus of a residential sound program in existing structures is the windows and doors. Solid wood doors are a better sound barrier than hollow doors. Curtains can be used to dampen sound, either through use
646:
damping pads are usually attached to the body in order to attenuate higher-order structural panel modes that significantly contribute to the overall noise level inside the cabin. Traditionally, experimental techniques are used to optimize the size and location of damping treatments. In particular,
384:
Sealing gaps and cracks around electrical wiring, water pipes and ductwork using acoustical caulk or spray foam will significantly reduce unwanted noise as a preliminary step for ceiling soundproofing. Acoustical caulk should be used along the perimeter of the wall and around all fixtures and duct
633:
blend materials. Waterproofing may be necessary depending on the materials used. Acoustic foam can be applied in different areas of a vehicle during manufacture to reduce cabin noise. Foams also have cost and performance advantages in installation since foam material can expand and fill cavities
641:
Surface damping materials are very effective at reducing structure-borne noise. Passive damping materials have been used since the early 1960s in the aerospace industry. Over the years, advances in material manufacturing and the development of more efficient analytical and experimental tools to
274:
decreases as they become farther apart so increasing the distance between the receiver and source results in a progressively lesser intensity of sound at the receiver. In a normal three-dimensional setting, with a point source and point receptor, the intensity of sound waves will be attenuated
213:
The absorption aspect in soundproofing should not be confused with sound-absorbing panels used in acoustic treatments. Absorption in this sense refers to reducing a resonating frequency in a cavity by installing insulation between walls, ceilings or floors. Acoustic panels can play a role in
503:, in combination with open-cell rubber or a closed-cell foam floor underlayment, will further reduce sound transmission. After applying these techniques, hardwood flooring or carpeting can be installed. Additional area rugs and furniture will help reduce unwanted reflection within the room.
299:
When sound waves hit a medium, the reflection of that sound is dependent on the dissimilarity of the material it comes in contact with. Sound hitting a concrete surface will result in a much different reflection than if the sound were to hit a softer medium such as fiberglass. In an outdoor
625:
Automotive soundproofing aims to decrease or eliminate the effects of exterior noise, primarily engine, exhaust and tire noise across a wide frequency range. A panel damping material is fitted which reduces the vibration of the vehicle's body panels when they are excited by one of the many
182:(acoustic foam, soundproof foam). Fibrous absorption material such as cellulose, mineral wool, fiberglass, sheep's wool, are more commonly used to deaden resonant frequencies within a cavity (wall, floor, or ceiling insulation), serving a dual purpose along with their
580:
Most sound transfer from a room to the outside occurs through mechanical means. The vibration passes directly through the brick, woodwork and other solid structural elements. When it meets with an element such as a wall, ceiling, floor or window, which acts as a
226:
and other resonant absorbers work by damping a sound wave as they reflect it. Unlike porous absorbers, resonant absorbers are most effective at low-medium frequencies and the absorption of resonant absorbers is matched to a narrow frequency range.
592:
and other absorbent means is less effective against this transmitted vibration. The transmission can be stopped by breaking the connection between the room that contains the noise source and the outside world. This is called acoustic decoupling.
133:
can be used to limit unwanted noise. Soundproofing can reduce the transmission of unwanted direct sound waves from the source to an involuntary listener through the use of distance and intervening objects in the sound path (see
498:
Decoupling between the joist and subfloor plywood using neoprene joist tape or u-shaped rubber spacers helps create soundproof flooring. An additional layer of plywood can be installed with a viscoelastic compound.
357:
Significant noise reduction can also be achieved by installing a second interior window. In this case, the exterior window remains in place while a slider or hung window is installed within the same wall openings.
1257:
585:, the vibration is amplified and heard in the second space. A mechanical transmission is much faster, more efficient and more readily amplified than an airborne transmission of the same initial strength.
629:
The automotive environment limits the thickness of materials that can be used, but combinations of dampers, barriers, and absorbers are common. Common materials include felt, foam, polyester, and
328:, a microphone is used to pick up the sound that is then analyzed by a computer; then, sound waves with opposite polarity (180° phase at all frequencies) are output through a speaker, causing
1136:"4. Physical Techniques to Reduce Noise Impacts - The Audible Landscape: A Manual for Highway Noise and Land Use - Federal Approach - Noise Compatible Planning - Noise - ENVIRonment - FHWA"
242:, by absorption or redirection through reflection or diffusion. Absorption reduces the overall sound level, whereas redirection makes unwanted sound harmless or even beneficial by reducing
287:
Adding dense material to treatment helps stop sound waves from exiting a source wall, ceiling or floor. Materials include mass-loaded vinyl, drywall, soundproof sheetrock, plywood,
1273:
988:
400:
An effective method to reduce impact noise is the "resilient isolation channel". The channels decouple the drywall from the joists, reducing the transfer of vibration.
178:
Sound-absorbing material controls reverberant sound pressure levels within a cavity, enclosure or room. Synthetic absorption materials are porous, referring to
601:
Restaurants, schools, office businesses, and healthcare facilities use architectural acoustics to reduce noise for their customers. In the United States,
920:
1162:
1057:
424:. After switch plates, outlet covers and lights are installed, acoustical caulking should be applied around the perimeter of the plates or fixtures.
368:
or greater. It is part of their
Residential Sound Insulation Program. The program provides solid-core wood entry doors plus windows and storm doors.
1300:
1135:
577:
A room within a room (RWAR) is one method of isolating sound and preventing it from transmitting to the outside world where it may be undesirable.
80:
2224:
1873:
1634:
621:
Spatially averaged particle velocity spectra (left) and broadband colormaps of a car floor without (middle) and with (right) a damping treatment
214:
treatment reducing reflections that make the overall sound in the source room louder, after walls, ceilings, and floors have been soundproofed.
2040:
609:
while 66% of students reported experiencing higher concentration levels after sound-absorbing materials were incorporated into the classroom.
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1092:
642:
characterize complex dynamic behaviors enabled the expansion of the usage of these materials to the automotive industry. Nowadays, multiple
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393:
insulation should only be used to fill gaps and cracks or as a 1-2 inch layer before installing mineral wool. Cured spray foam and other
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2234:
2116:
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564:
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67:
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after application and also prevent leaks and some gases from entering the vehicle. Vehicle soundproofing can reduce wind, engine,
1082:
354:
achieve somewhat greater sound damping than single-pane windows when well-sealed into the opening of the window frame and wall.
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2219:
2070:
1748:
964:
389:
insulation is most commonly used in soundproofing for its density and low cost in comparison to other soundproofing materials.
291:, concrete or rubber. Different widths and densities in soundproofing material reduce sound within a variable frequency range.
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542:
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Creating separation between a sound source and any form of adjoining mass, hindering the direct pathway for sound transfer.
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1904:
103:. There are several methods employed including increasing the distance between the source and receiver, decoupling, using
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Since the early 1970s, it has become common practice in the United States and other industrialized countries to engineer
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2187:
1217:
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environment such as highway engineering, embankments or paneling are often used to reflect sound upwards into the sky.
40:
2035:
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946:
416:(STC) value. Soundproof drywall in combination with a viscoelastic compound may achieve a noise reduction of STC 60+.
397:
can be a sound conductor. Spray foam is not porous enough to absorb sound and is also not dense enough to stop sound.
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527:
448:
361:
In the US, the FAA offers sound-reducing for homes that fall within a noise contour where the average sound level is
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638:, and tire noise. Vehicle soundproofing can reduce sound inside a vehicle from five to 20 decibels.
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Studies and research regarding sound reduction materials with the purpose of reducing sound
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has requirements regulating the length of exposure of workers to certain levels of noise.
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788:
773:"Acoustics of Buildings: including Acoustics of Auditoriums and Sound-proofing of Rooms"
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1043:"What is more effective between active noise cancellation and soundproofing ?"
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112:
904:
408:
Mass is the only way to stop sound. Mass refers to drywall, plywood or concrete.
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190:, which absorb sound reflections in a room, improving speech intelligibility.
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properties. Both fibrous and porous absorption material are used to create
772:
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1524:
316:
may be applied to the surface. It will scatter sound in all directions.
2335:
1502:
682:
235:
868:
1955:
1058:"City wants more Midway-area homeowners to sign up for soundproofing"
796:
364:
199:
2177:
2153:
2138:
2131:
1828:
1675:
1163:"U.S. Standards on Workplace Noise Trail Those of Other Countries"
673:
along major highways to protect adjacent residents from intruding
654:
375:
79:
1665:
852:
Design, characterization and modeling of biobased acoustic foams
602:
1730:
1343:
836:
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of heavy materials or through the use of air chambers known as
510:
431:
312:
from a hard flat surface is giving a problematic echo then an
18:
1339:
254:
in the structure of the room itself or things in the room.
1244:"Introduction to Car Audio: How to Tame That Road Noise"
743:(PhD thesis). California Polytechnic State University.
1108:
Chakraborty, Bikash C.; Ratna, Debdatta (2020-01-31).
1018:"Noise Control in Multi-Family Residential Buildings"
2344:
2313:
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2095:
2011:
1897:
1821:
1765:
1658:
1587:
1484:
1442:
1377:
1320:"Sound Barriers Guidelines - Highway Traffic Noise"
1274:"DOW Automotive Systems: BETAFOAM™ acoustic foams"
246:. Damping can be separately applied to reduce the
1302:Designing the damping treatment of a vehicle body
1183:"Boosting Students' Learning With Soundproofing"
885:"Technical comparison of soundproof wall panels"
659:Noise barrier alongside a railway line in Japan
837:"Acoustic foam: a method to achieve acoustic"
1742:
1355:
145:Soundproofing can suppress unwanted indirect
8:
883:Kulakov, Kirill; Romanovich, Marina (2019).
1111:Polymers for Vibration Damping Applications
545:. Unsourced material may be challenged and
466:. Unsourced material may be challenged and
2310:
1749:
1735:
1727:
1362:
1348:
1340:
989:"How to sound-proof your noisy apartment"
965:"Reflection, Refraction, and Diffraction"
919:Cox, Trevor J.; D'Antonio, Peter (2009).
903:
867:
804:
748:
565:Learn how and when to remove this message
486:Learn how and when to remove this message
385:registers to further seal the treatment.
68:Learn how and when to remove this message
850:Ghaffari Mosanenzadeh, Shahrzad (2014).
616:
2225:Signal-to-interference-plus-noise ratio
731:
107:to reflect or absorb the energy of the
2041:Equivalent pulse code modulation noise
198:Porous absorbers, typically open cell
1141:Federal Highway Administration (FHWA)
854:(PhD thesis). University of Toronto.
210:, porosity, thickness, and density.
7:
2164:(energy per symbol to noise density)
543:adding citations to reliable sources
464:adding citations to reliable sources
111:, using damping structures such as
2235:Signal-to-quantization-noise ratio
685:, earth or a combination thereof.
45:There are too many short sections.
14:
2149:(energy per bit to noise density)
2117:Carrier-to-receiver noise density
2031:Effective input noise temperature
332:and canceling much of the noise.
279:of the distance from the source.
1760:(physics and telecommunications)
1711:
1710:
1423:
922:Acoustic Absorbers and Diffusers
739:Hawkins, Timothy Gerard (2014).
515:
436:
23:
16:Methods to reduce sound pressure
2372:Block-matching and 3D filtering
2220:Signal-to-noise ratio (imaging)
2071:Noise, vibration, and harshness
380:Apartment ceiling soundproofing
1161:Buckley, Cara (20 July 2012).
679:Federal Highway Administration
1:
1905:Additive white Gaussian noise
1081:Long, Marshall (2014-02-05).
949:. Studio tips. Archived from
2281:Interference (communication)
2188:Signal-to-interference ratio
2178:Signal, noise and distortion
2036:Equivalent noise resistance
905:10.1051/e3sconf/20199102027
43:. The specific problem is:
2452:
947:"Low frequency absorption"
662:
39:to meet Knowledge (XXG)'s
2331:Total variation denoising
1706:
1418:
99:is any means of impeding
1259:UK Thinsulate literature
969:www.physicsclassroom.com
750:10.15368/THESES.2014.121
414:sound transmission class
330:destructive interference
250:in the air or to reduce
136:sound transmission class
2245:Contrast-to-noise ratio
1387:Architectural acoustics
1246:. Secrets of Car Audio.
1188:The Wall Street Journal
1084:Architectural Acoustics
806:2027/mdp.39015031200952
783:(2855): 85. July 1924.
88:being tested inside an
2168:Modulation error ratio
2103:Carrier-to-noise ratio
2066:Noise spectral density
1474:Fletcher–Munson curves
1469:Equal-loudness contour
1379:Acoustical engineering
892:E3S Web of Conferences
660:
622:
381:
270:The energy density of
93:
2383:Denoising autoencoder
2357:Anisotropic diffusion
2202:Signal-to-noise ratio
2046:Impulse noise (audio)
1961:Johnson–Nyquist noise
1849:Government regulation
1610:Hermann von Helmholtz
1508:Fundamental frequency
1412:Sympathetic resonance
695:Acoustic transmission
658:
620:
379:
240:resonance in the room
140:sound reduction index
83:
2266:List of noise topics
539:improve this section
460:improve this section
326:active noise control
320:Active noise control
252:mechanical resonance
224:Helmholtz resonators
50:improve this article
2026:Circuit noise level
2021:Channel noise level
1630:Werner Meyer-Eppler
1540:Missing fundamental
1022:Acoustical Surfaces
860:2014PhDT.......199G
789:1924Natur.114R..85.
352:Double-pane windows
310:specular reflection
2082:Pseudorandom noise
1972:Quantization error
1783:Noise cancellation
1513:Frequency spectrum
1324:roads.maryland.gov
1168:The New York Times
1087:. Academic Press.
1062:chicagotribune.com
1056:Wisniewski, Mary.
661:
623:
507:Room within a room
382:
248:acoustic resonance
218:Resonant absorbers
184:thermal insulation
123:sound generators.
119:, or using active
94:
86:pair of headphones
2401:
2400:
2397:
2396:
2336:Wavelet denoising
2296:Thermal radiation
2291:Spectrum analyzer
2087:Statistical noise
1911:Atmospheric noise
1808:Noise temperature
1793:Noise measurement
1773:Acoustic quieting
1724:
1723:
1686:Musical acoustics
1518:harmonic spectrum
1222:Car Insulation UK
1121:978-0-12-819253-5
1094:978-0-12-398265-0
575:
574:
567:
501:Mass loaded vinyl
496:
495:
488:
410:Mass-loaded vinyl
314:acoustic diffuser
275:according to the
238:serves to reduce
222:Resonant panels,
127:Acoustic quieting
101:sound propagation
92:for soundproofing
78:
77:
70:
41:quality standards
32:This article may
2441:
2389:Deep Image Prior
2378:Shrinkage Fields
2362:Bilateral filter
2311:
1916:Background noise
1813:Phase distortion
1751:
1744:
1737:
1728:
1714:
1713:
1615:Carleen Hutchins
1547:Combination tone
1434:
1427:
1407:String vibration
1364:
1357:
1350:
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1334:
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1047:
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1038:
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1007:
1005:
1004:
995:. Archived from
985:
979:
978:
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943:
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827:
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797:10.1038/114085b0
769:
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736:
720:Recording studio
715:Noise regulation
570:
563:
559:
556:
550:
519:
511:
491:
484:
480:
477:
471:
440:
432:
395:closed-cell foam
367:
204:melamine sponges
194:Porous absorbers
90:anechoic chamber
73:
66:
62:
59:
53:
27:
26:
19:
2451:
2450:
2444:
2443:
2442:
2440:
2439:
2438:
2424:Noise reduction
2404:
2403:
2402:
2393:
2367:Non-local means
2340:
2321:Low-pass filter
2306:
2300:
2286:Noise generator
2276:Colors of noise
2254:
2161:
2157:
2146:
2142:
2091:
2013:
2007:
1987:Coherent noise
1963:(thermal noise)
1893:
1817:
1803:Noise reduction
1761:
1755:
1725:
1720:
1702:
1654:
1645:D. Van Holliday
1583:
1552:Mersenne's laws
1486:Audio frequency
1480:
1444:Psychoacoustics
1438:
1437:
1430:
1416:
1373:
1368:
1338:
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1045:. berkeley.edu.
1041:Camtion, Eros.
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710:Noise pollution
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2419:Fluid dynamics
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2301:
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2283:
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2262:
2260:
2259:Related topics
2256:
2255:
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2199:
2185:
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2074:
2068:
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2048:
2043:
2038:
2033:
2028:
2023:
2017:
2015:
2009:
2008:
2006:
2005:
2004:
2003:
1998:
1996:Gradient noise
1993:
1985:
1980:
1975:
1969:
1964:
1958:
1953:
1948:
1943:
1941:Gaussian noise
1938:
1933:
1928:
1923:
1921:Brownian noise
1918:
1913:
1908:
1901:
1899:
1898:Class of noise
1895:
1894:
1892:
1891:
1886:
1884:Transportation
1881:
1876:
1871:
1866:
1861:
1856:
1851:
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1673:
1668:
1662:
1660:
1659:Related topics
1656:
1655:
1653:
1652:
1647:
1642:
1640:Joseph Sauveur
1637:
1632:
1627:
1625:Marin Mersenne
1622:
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1607:
1602:
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1359:
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1336:
1335:
1311:
1292:
1265:
1249:
1235:
1208:
1191:. 2014-12-08.
1174:
1153:
1127:
1120:
1100:
1093:
1073:
1048:
1033:
1009:
980:
956:
953:on 2019-08-07.
938:
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842:
828:
764:
730:
729:
727:
724:
723:
722:
717:
712:
707:
702:
697:
690:
687:
671:noise barriers
663:Main article:
652:
651:Noise barriers
649:
614:
611:
598:
595:
583:sounding board
573:
572:
555:September 2021
523:
521:
514:
508:
505:
494:
493:
476:September 2021
444:
442:
435:
429:
426:
405:
402:
373:
370:
342:
339:
337:
334:
321:
318:
305:
302:
296:
293:
284:
281:
277:inverse square
267:
264:
259:
256:
232:
229:
219:
216:
195:
192:
180:open cell foam
175:
172:
170:
167:
105:noise barriers
76:
75:
31:
29:
22:
15:
13:
10:
9:
6:
4:
3:
2:
2447:
2446:
2435:
2434:Noise control
2432:
2430:
2427:
2425:
2422:
2420:
2417:
2415:
2412:
2411:
2409:
2390:
2387:
2384:
2381:
2379:
2376:
2373:
2370:
2368:
2365:
2363:
2360:
2358:
2355:
2353:
2352:Gaussian blur
2350:
2349:
2347:
2343:
2337:
2334:
2332:
2329:
2327:
2326:Median filter
2324:
2322:
2319:
2318:
2316:
2312:
2309:
2303:
2297:
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2292:
2289:
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2279:
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2267:
2264:
2263:
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2257:
2250:
2246:
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2240:
2236:
2233:
2230:
2226:
2223:
2221:
2218:
2215:
2211:
2207:
2203:
2200:
2197:
2193:
2189:
2186:
2183:
2179:
2176:
2173:
2169:
2166:
2163:
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2151:
2148:
2147:
2136:
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2129:
2126:
2122:
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2115:
2112:
2108:
2104:
2101:
2100:
2098:
2094:
2088:
2085:
2083:
2080:
2078:
2075:
2072:
2069:
2067:
2064:
2062:
2061:Noise shaping
2059:
2057:
2054:
2052:
2049:
2047:
2044:
2042:
2039:
2037:
2034:
2032:
2029:
2027:
2024:
2022:
2019:
2018:
2016:
2010:
2002:
1999:
1997:
1994:
1992:
1989:
1988:
1986:
1984:
1981:
1979:
1976:
1974:(or q. noise)
1973:
1970:
1968:
1965:
1962:
1959:
1957:
1954:
1952:
1949:
1947:
1944:
1942:
1939:
1937:
1936:Flicker noise
1934:
1932:
1929:
1927:
1924:
1922:
1919:
1917:
1914:
1912:
1909:
1906:
1903:
1902:
1900:
1896:
1890:
1887:
1885:
1882:
1880:
1879:Sound masking
1877:
1875:
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1867:
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1806:
1804:
1801:
1799:
1796:
1794:
1791:
1789:
1788:Noise control
1786:
1784:
1781:
1779:
1776:
1774:
1771:
1770:
1768:
1764:
1759:
1752:
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1664:
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1661:
1657:
1651:
1648:
1646:
1643:
1641:
1638:
1636:
1635:Lord Rayleigh
1633:
1631:
1628:
1626:
1623:
1621:
1618:
1616:
1613:
1611:
1608:
1606:
1605:Ernst Chladni
1603:
1601:
1598:
1596:
1593:
1592:
1590:
1586:
1580:
1577:
1573:
1570:
1569:
1568:
1567:Standing wave
1565:
1563:
1560:
1558:
1555:
1553:
1550:
1548:
1545:
1541:
1538:
1536:
1535:Inharmonicity
1533:
1531:
1528:
1527:
1526:
1523:
1519:
1516:
1515:
1514:
1511:
1509:
1506:
1504:
1501:
1499:
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1441:
1433:
1429:
1426:
1422:
1421:
1413:
1410:
1408:
1405:
1403:
1402:Soundproofing
1400:
1398:
1397:Reverberation
1395:
1393:
1390:
1388:
1385:
1384:
1382:
1380:
1376:
1372:
1365:
1360:
1358:
1353:
1351:
1346:
1345:
1342:
1325:
1321:
1315:
1312:
1304:
1303:
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1275:
1269:
1266:
1261:
1260:
1253:
1250:
1245:
1239:
1236:
1223:
1219:
1216:Neale, Paul.
1212:
1209:
1198:
1194:
1190:
1189:
1184:
1178:
1175:
1170:
1169:
1164:
1157:
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1137:
1131:
1128:
1123:
1117:
1113:
1112:
1104:
1101:
1096:
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1086:
1085:
1077:
1074:
1063:
1059:
1052:
1049:
1044:
1037:
1034:
1023:
1019:
1013:
1010:
999:on 2017-02-13
998:
994:
990:
984:
981:
970:
966:
960:
957:
952:
948:
942:
939:
934:
932:9780203893050
928:
925:. CRC Press.
924:
923:
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901:
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713:
711:
708:
706:
703:
701:
698:
696:
693:
692:
688:
686:
684:
680:
676:
675:roadway noise
672:
666:
665:Noise barrier
657:
650:
648:
645:
639:
637:
632:
631:polypropylene
627:
619:
612:
610:
606:
604:
596:
594:
591:
590:acoustic foam
586:
584:
578:
569:
566:
558:
548:
544:
540:
534:
533:
529:
524:This section
522:
518:
513:
512:
506:
504:
502:
490:
487:
479:
469:
465:
461:
455:
454:
450:
445:This section
443:
439:
434:
433:
427:
425:
423:
417:
415:
411:
403:
401:
398:
396:
392:
388:
378:
371:
369:
366:
359:
355:
353:
349:
340:
335:
333:
331:
327:
319:
317:
315:
311:
303:
301:
294:
292:
290:
282:
280:
278:
273:
265:
263:
257:
255:
253:
249:
245:
241:
237:
230:
228:
225:
217:
215:
211:
209:
205:
201:
193:
191:
189:
185:
181:
173:
168:
166:
164:
163:reverberation
160:
156:
152:
148:
143:
141:
137:
132:
131:noise control
128:
124:
122:
118:
114:
113:sound baffles
110:
106:
102:
98:
97:Soundproofing
91:
87:
82:
72:
69:
61:
58:December 2023
51:
46:
42:
38:
37:
30:
21:
20:
2248:
2238:
2228:
2213:
2209:
2205:
2195:
2191:
2181:
2171:
2152:
2137:
2130:
2124:
2120:
2110:
2106:
2051:Noise figure
2012:Engineering
2001:Worley noise
1931:Cosmic noise
1868:
1854:Human health
1650:Thomas Young
1600:Jens Blauert
1588:Acousticians
1401:
1327:. Retrieved
1323:
1314:
1301:
1295:
1284:. Retrieved
1280:
1268:
1258:
1252:
1238:
1226:. Retrieved
1221:
1211:
1200:. Retrieved
1186:
1177:
1166:
1156:
1145:. Retrieved
1139:
1130:
1114:. Elsevier.
1110:
1103:
1083:
1076:
1065:. Retrieved
1061:
1051:
1036:
1025:. Retrieved
1021:
1012:
1001:. Retrieved
997:the original
992:
983:
972:. Retrieved
968:
959:
951:the original
941:
921:
914:
895:
891:
878:
851:
845:
831:
780:
776:
767:
740:
734:
705:Hearing test
668:
644:viscoelastic
640:
628:
624:
607:
600:
587:
579:
576:
561:
552:
537:Please help
525:
497:
482:
473:
458:Please help
446:
418:
407:
399:
387:Mineral wool
383:
360:
356:
344:
336:Applications
323:
307:
298:
286:
269:
261:
234:
221:
212:
197:
177:
144:
125:
96:
95:
64:
55:
48:Please help
44:
33:
2077:Phase noise
2056:Noise floor
1991:Value noise
1983:White noise
1926:Burst noise
1844:Environment
1839:Electronics
1822:Noise in...
1798:Noise power
1620:Franz Melde
1595:John Backus
1579:Subharmonic
1432:Spectrogram
1228:12 February
898:: 2, 4, 5.
700:Acoustiblok
588:The use of
341:Residential
272:sound waves
161:that cause
153:that cause
151:reflections
147:sound waves
109:sound waves
52:if you can.
2408:Categories
2345:2D (Image)
1978:Shot noise
1967:Pink noise
1951:Infrasound
1946:Grey noise
1778:Distortion
1681:Ultrasound
1671:Infrasound
1457:Bark scale
1329:2017-07-10
1286:2017-05-26
1202:2021-05-20
1147:2020-02-13
1067:2017-02-05
1027:2017-07-10
1003:2017-02-05
974:2017-07-10
869:1807/71305
726:References
613:Automotive
597:Commercial
391:Spray foam
348:honeycombs
295:Reflection
289:fibreboard
258:Decoupling
208:tortuosity
174:Absorption
169:Techniques
159:resonances
117:absorption
2414:Acoustics
2271:Acoustics
1834:Buildings
1562:Resonance
1462:Mel scale
1392:Monochord
1371:Acoustics
1197:0099-9660
839:. Tabnak.
815:0028-0836
526:does not
447:does not
304:Diffusion
244:coherence
202:foams or
121:antinoise
2305:Denoise
1716:Category
1557:Overtone
1525:Harmonic
823:46370464
759:13922503
689:See also
372:Ceilings
363:65
266:Distance
149:such as
34:require
2314:General
2307:methods
2212:,
1766:General
1503:Formant
1281:dow.com
856:Bibcode
785:Bibcode
683:masonry
547:removed
532:sources
468:removed
453:sources
236:Damping
231:Damping
36:cleanup
2374:(BM3D)
2096:Ratios
1956:Jitter
1907:(AWGN)
1859:Images
1696:Violin
1530:Series
1224:. CIUK
1195:
1118:
1091:
929:
821:
813:
777:Nature
757:
677:. The
428:Floors
365:dB SPL
200:rubber
155:echoes
2429:Sound
2385:(DAE)
2182:SINAD
2132:dBrnC
2073:(NVH)
2014:terms
1889:Video
1874:Ships
1869:Rooms
1864:Radio
1829:Audio
1758:Noise
1691:Piano
1676:Sound
1490:pitch
1452:Pitch
1306:(PDF)
1277:(PDF)
993:Stuff
888:(PDF)
819:S2CID
755:S2CID
404:Walls
308:If a
2239:SQNR
2229:SINR
1666:Echo
1572:Node
1498:Beat
1488:and
1230:2015
1218:"Mr"
1193:ISSN
1116:ISBN
1089:ISBN
927:ISBN
811:ISSN
636:road
603:OSHA
530:any
528:cite
451:any
449:cite
283:Mass
157:and
138:and
129:and
115:for
2249:CNR
2214:SNR
2172:MER
900:doi
864:hdl
801:hdl
793:doi
781:114
745:doi
541:by
462:by
422:MLV
324:In
142:).
2410::
2158:/N
2143:/N
2125:kT
1322:.
1279:.
1220:.
1185:.
1165:.
1138:.
1060:.
1020:.
991:.
967:.
896:91
894:.
890:.
862:.
817:.
809:.
799:.
791:.
779:.
775:.
753:.
165:.
84:A
2251:)
2247:(
2241:)
2237:(
2231:)
2227:(
2216:)
2210:N
2208:/
2206:S
2204:(
2198:)
2196:I
2194:/
2192:S
2190:(
2184:)
2180:(
2174:)
2170:(
2160:0
2156:s
2154:E
2145:0
2141:b
2139:E
2127:)
2123:/
2121:C
2119:(
2113:)
2111:N
2109:/
2107:C
2105:(
1750:e
1743:t
1736:v
1363:e
1356:t
1349:v
1332:.
1308:.
1289:.
1262:.
1232:.
1205:.
1171:.
1150:.
1124:.
1097:.
1070:.
1030:.
1006:.
977:.
935:.
908:.
902::
872:.
866::
858::
825:.
803::
795::
787::
761:.
747::
568:)
562:(
557:)
553:(
549:.
535:.
489:)
483:(
478:)
474:(
470:.
456:.
71:)
65:(
60:)
56:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
