Acoustics Research & Development (R&D)

ITS is active in Research and Development in acoustics, with many contents produced by ITS human ressource.

  • Report PhR09-000  Comparisons between measurements and predictions of the properties of dry air in terms of thermodynamics and fluid dynamics (2009)
  • Report PhR08-005  Review of the computation scheme of dissipative silencers (2008)
  • Report PhR16-006  Acoustic development program for ITS: aperiodic report of the implementation (2016)
  • Report PhR08-007  Comparisons between measurements and prediction with a 5-parameters model for the COmputation of Acoustic Layers (2008)
  • Report PhR16-008  User’s manual for the software SILDIS (2016)
  • Report PhR08-009  Overview of the properties of some materials in the context of the design of sound proofing equipments involving porous media (2008)
  • Report PhR14-011  Acoustic and aeraulic design of dissipative silencers: the status of the Art (2014)
  • Report PhR14-012  Comparisons between measurements and predictions of the transmission loss of a single-leaf (plane) partition consisting of a monolithic, isotropic plate (and related considerations) (2014)
  • Report PhR16-013  Sound Impact Limitation Design for Industrialized Solutions: a single Excel based software for a wide range of applications (presentation brochure for the software SILDIS) (2016)
  • Report PhR08-014  Procedure for the use of Excel based programs with a restricted access (2008)
  • Report PhRxx-015  Collection of soundproofing constructions systems: a companion to “User’s manual for the software SILDIS” (20xx)
  • Report PhR16-016  Comparisons between measurements and predictions of the sound absorption of a multilayered (plane) acoustic structure (2016)
  • Report PhR09-017  Comparisons between measurements and predictions of the sound transmission of a single-leaf (plane) partition consisting of a porous medium (2009)
  • Report PhR09-018  Comparisons between measurements and predictions of the sound transmission of a single-leaf (plane) partition consisting of a monolithic, orthotropic plate (2009)
  • Report PhR09-020  Comparisons between measurements and predictions of the sound transmission of  a (plane) partition consisting of a monolithic, isotropic plate covered by a porous medium (2009)
  • Report PhR09-023  Acoustic design of plane partitions: the status of the Art (2009)
  • Report PhR09-024  Comparisons between measurements and predictions of the sound transmission of a double-leaf (plane) partition consisting of 2 monolithic, isotropic plates (2009)
  • Report PhR09-025  Comparisons between measurements and predictions of the sound transmission of a double-leaf (plane) partition consisting of 1 monolithic, isotropic plate and 1 monolithic, orthotropic plate (2009)
  • Report PhR09-026  Comparisons between measurements and predictions of the sound transmission of a triple-leaf (plane) partition consisting of (3) monolithic, isotropic plates (2009)
  • Report PhR09-027  Comparisons between measurements and predictions of the sound transmission of a (plane) plate with an extensional damping (2009)
  • Report PhR09-030  Sécurisation du programme de calcul SILDIS  (2009)
  • Report PhR15-031  Comparisons between measurements and prediction of the acoustic performance of rectangular dissipative silencers. Part 1: propagation loss with or without flow (2015)
  • Report PhR09-032  Comparisons between measurements and predictions of the acoustic performance of rectangular dissipative silencers. Part 2: bypass correction (2009)
  • Report PhR09-033  Comparisons between measurements and predictions of the acoustic performance of rectangular dissipative silencers. Part 3: reflection loss (2009)
  • Report PhR09-034  Comparisons between measurements and predictions of the acoustic performance of rectangular dissipative silencers. Part 4: insertion loss without self noise (2009)
  • Report PhR09-035  Comparisons between measurements and predictions of the acoustic performance of rectangular dissipative silencers. Part 5: self noise (2009)
  • Report PhR13-037  Comparisons between measurements and predictions of the aeraulic performance of rectangular dissipative silencers.  (2013)
  • Report PhR13-041  Comparisons between measurements and prediction of the acoustic performance of square dissipative silencers. Part 1: propagation loss with or without flow (2013)
  • Report PhR09-047  Comparisons between measurements and predictions of the aeraulic performance of square dissipative silencers. (2009)
  • Report PhR09-051  Comparisons between measurements and prediction of the acoustic performance of round dissipative silencers. Part 1: propagation loss with or without flow (2009)
  • Report PhR09-055  Comparisons between measurements and predictions of the acoustic performance of round dissipative silencers. Part 5: self noise (2009)
  • Report PhR09-057  Comparisons between measurements and predictions of the aeraulic performance of round dissipative silencers. (2009)
  • Report PhR16-061  Comparisons between measurements and prediction of the acoustic performance of round dissipative silencers with a central pod. Part 1: propagation loss with or without flow (2016)
  • Report PhR17-065  Comparisons between measurements and prediction of the acoustic performance of round dissipative silencers with a central pod. Part 5: self noise (2017)
  • Report PhR17-067  Comparisons between measurements and predictions of the aeraulic performance of round dissipative silencers with a central pod (2017)
  • Report PhR09-071  Comparisons between measurements and prediction of the acoustic performance of resonant silencers made of Pine Tree splitters with a rear lining. Part 1: propagation loss with or without flow (2009)
  • Report PhR09-075  Comparisons between measurements and prediction of the acoustic performance of resonant silencers made of Pine Tree splitters with a rear lining. Part 5: self noise (2009)
  • Report PhR09-081  Comparisons between measurements and prediction of the acoustic performance of resonant silencers made of Pine Tree splitters with a lateral lining. Part 1: propagation loss with or without flow (2009)
  • Report PhR10-085  Comparisons between measurements and prediction of the acoustic performance of resonant silencers made of Pine Tree splitters with a lateral lining. Part 5: self noise (2010)
  • Report PhR13-090  Comparisons between measurements and predictions of the acoustic performance of rectangular duct wall. Part 1: break-out sound transmission loss (2013)
  • Report PhR11-091  Comparisons between measurements and predictions of the acoustic performance of circular duct wall.Part 1: break-out sound transmission loss (2011)
  • Report PhR13-094  Comparisons between measurements and predictions of the acoustic performance of round bends. Part 1: insertion loss without self noise (2013)
  • Report PhR13-095  Comparisons between measurements and predictions of the acoustic performance of round bends. Part 2: self noise (2013)
  • Report PhR13-096  Comparisons between measurements and predictions of the acoustic performance of round bends. Part 3: insertion loss with self noise (2013)
  • Report PhRxx-100  Comparisons between measurements and predictions of the acoustic performance of rectangular ducts wall. Part 2: sound power level radiated by (duct) wall (20xx)
  • Report PhRxx-101  Comparisons between measurements and predictions of the acoustic performance of circular ducts wall. Part 2: sound power level radiated by (duct) wall (20xx)
  • Report PhR15-104  Comparisons between measurements and predictions of the spatial decay of speech in open-plan offices (2015)
  • Report PhR15-105  Comparisons between measurements and predictions of the sound spatial decay in industrial spaces (2015)
  • Report PhR15-107  Comparisons between measurements and predictions of exhaust ducts directivity  (2015)
  • Report PhR15-108  Comparisons between measurements and predictions of sound attenuation during propagation in air (2015)
  • Report PhR16-111  Comparisons between measurements and predictions of control valves aerodynamic noise.Part 1: flow indicators (2016)
  • Report PhR16-112  Comparisons between measurements and predictions of control valves aerodynamic noise. Part 2: noise level (2016)
  • Report PhR13-115  Comparisons between measurements and predictions of the acoustic performance of rectangular bends. Part 2: self noise (2013)
  • Report PhR16-117  Comparisons between measurements and predictions of control valves aerodynamic noise  (2016)
  • Report PhRxx-121  Comparisons between measurements and prediction of the acoustic performance of conventional splitter silencers versus silencers with discontinued splitters. Part 1: propagation loss with or without flow (20xx)
  • Report PhRxx-122  Comparisons between measurements and prediction of the acoustic performance of conventional splitter silencers versus silencers with discontinued splitters. Part 2: bypass correction (20xx)
  • Report PhRxx-123  Comparisons between measurements and prediction of the acoustic performance of conventional splitter silencers versus silencers with discontinued splitters. Part 3: reflection loss (20xx)
  • Report PhRxx-124  Comparisons between measurements and prediction of the acoustic performance of conventional splitter silencers versus silencers with discontinued splitters. Part 4: insertion loss without self noise (20xx)
  • Report PhRxx-125  Comparisons between measurements and prediction of the acoustic performance of conventional splitter silencers versus silencers with discontinued splitters. Part 5: self noise (20xx)
  • Report PhR16-131  Comparisons between measurements and prediction of the acoustic performance of rectangular dissipative silencers with discontinued splitters. Part 1: propagation loss with or without flow (2016)
  • Report PhRxx-132  Comparisons between measurements and predictions of the acoustic performance of rectangular dissipative silencers with discontinued splitters. Part 2: bypass correction (20xx)
  • Report PhRxx-133  Comparisons between measurements and predictions of the acoustic performance of rectangular dissipative silencers with discontinued splitters. Part 3: reflection loss (20xx)
  • Report PhRxx-134  Comparisons between measurements and predictions of the acoustic performance of rectangular dissipative silencers with discontinued splitters. Part 4: insertion loss without self noise (20xx)
  • Report PhR15-135  Comparisons between measurements and predictions of the acoustic performance of rectangular dissipative silencers with discontinued splitters. Part 5: self noise (2015)
  • Report PhR15-137  Comparisons between measurements and prediction of the aerodynamic performance of rectangular dissipative silencers with discontinued splitters (2015)
  • Report PhR16-139  On the comparison of the performance of silencers with continuous and discontinuous splitters: 2 case studies with the software SILDIS (2016)
  • Report PhR13-141  Comparisons between measurements and predictions of the acoustic performance of straight round ducts. Part 1: insertion loss without self noise (2013)
  • Report PhR13-142  Comparisons between measurements and predictions of the acoustic performance of straight round ducts. Part 2: self noise (2013)
  • Report PhR13-143  Comparisons between measurements and predictions of the acoustic performance of straight round ducts. Part 3: insertion loss with self noise (2013)
  • Report PhR13-151  Comparisons between measurements and predictions of the acoustic performance of straight rectangular ducts. Part 1: insertion loss without self noise (2013)
  • Report PhR13-152  Comparisons between measurements and predictions of the acoustic performance of straight rectangular ducts. Part 2: self noise (2013)
  • Report PhR13-153  Comparisons between measurements and predictions of the acoustic performance of straight rectangular ducts. Part 3: insertion loss with self noise (2013)
  • Report PhR13-161  Comparisons between measurements and predictions of nozzle reflection (2013)
  • Report PhR14-171  Comparisons between measurements and predictions of sound decay in enclosed spaces. Part 1: temporal sound decay after noise-off (2014)
  • Report PhR14-172  Comparisons between measurements and predictions of sound decay in enclosed spaces. Part 2: reverberation time (2014)
  • Report PhR17-173  Comparisons between measurements and predictions of sound decay in enclosed spaces. Part 3: spatial sound decay (2017)
  • Report PhR16-181  Comparisons between measurements and prediction of jet noise. Part 1: turbulence noise. Sub-part 1: acoustic efficiency (2016)
  • Report PhR16-182  Comparisons between measurements and prediction of jet noise. Part 1: turbulence noise. Sub-part 2: sound power  (2016)
  • Report PhR16-184  Comparisons between measurements and prediction of jet noise. Part 1: turbulence noise. Sub-part 4: spectrum (2016)
  • Report PhR16-191  Comparisons between measurements and prediction of jet noise. Part 2: chocked jet noise. Sub-part 1: acoustic efficiency (2016)
  • Report PhR16-192  Comparisons between measurements and prediction of jet noise. Part 2: chocked jet noise. Sub-part 2: sound power  (2016)
  • Report PhR16-193  Comparisons between measurements and prediction of jet noise. Part 2: chocked jet noise. Sub-part 3: peak frequency (2016)
  • Report PhR16-194  Comparisons between measurements and prediction of jet noise. Part 2: chocked jet noise. Sub-part 4: spectrum (2016)
  • Report PhR16-202  Comparisons between measurements and prediction of jet noise. Part 3: undefined jet noise. Sub-part 2: sound power  (2016)
  • Report PhR16-204  Comparisons between measurements and prediction of jet noise. Part 3: undefined jet noise. Sub-part 4: spectrum (2016)
  • Report PhRxx-211  Comparisons between measurements and prediction of jet noise. Part 1: spectrum of turbulence noise (20xx)
  • Report PhRxx-212  Comparisons between measurements and prediction of jet noise. Part 2: spectrum of shock noise (20xx)
  • Report PhRxx-213  Comparisons between measurements and prediction of jet noise. Part 3: power of unspecified noise (20xx)
  • Report PhR16-221  Comparisons between measurements and predictions of safety valves noise (emissions). Part 1: flow indicators (2016)
  • Report PhR16-222  Comparisons between measurements and predictions of safety valves noise (emissions). Part 2: noise level (2016)
  • Report PhR16-230  Comparisons between measurements and predictions of piping systems flow indicators (2016)
  • Report PhR17-241  Comparisons between measurements and prediction of the acoustic performance of simple expansion chamber muffers without extended tubes. Part 1: transmission loss with or without flow (2017)
  • Report PhR17-242  Comparisons between measurements and prediction of the acoustic performance of simple expansion chamber muffers without extended tubes. Part 1: insertion loss with or without flow (2017)
  • Report PhR17-251  Comparisons between measurements and prediction of the acoustic performance of simple expansion chamber muffers with inlet extended tube. Part 1: transmission loss with or without flow (2017)
  • Report PhR17-261  Comparisons between measurements and prediction of the acoustic performance of simple expansion chamber muffers with outlet extended tube. Part 1: transmission loss with or without flow (2017)
  • Report PhR17-271  Comparisons between measurements and prediction of the acoustic performance of simple expansion chamber muffers with inlet & outlet extended tubes. Part 1: transmission loss with or without flow (2017)
  • Report PhR17-281  Comparisons between measurements and prediction of the acoustic performance of double expansion chamber muffers without extended tubes. Part 1: transmission loss with or without flow (2017)
  • Report PhR17-291  Comparisons between measurements and prediction of the acoustic performance of double expansion chamber muffers with inlet extended tube. Part 1: transmission loss with or without flow (2017)
  • Report PhR17-301  Comparisons between measurements and prediction of the acoustic performance of double expansion chamber muffers with outlet extended tube. Part 1: transmission loss with or without flow (2017)
  • Report PhR17-311  Comparisons between measurements and prediction of the acoustic performance of double expansion chamber muffers with inlet & outlet extended tubes. Part 1: transmission loss with or without flow (2017)
  • Report PhR17-321  Comparisons between measurements and prediction of the acoustic radiation of a termination being open & unflanged. Part 1: end correction (2017)
  • Report PhR17-322  Comparisons between measurements and prediction of the acoustic radiation of a termination being open & unflanged. Part 2: reflection coefficient (2017)
  • Report PhR17-323  Comparisons between measurements and prediction of the acoustic radiation of a termination being open & unflanged. Part 3: radiation impedance (2017)
  • Report PhR17-331  Comparisons between measurements and prediction of the acoustic radiation of a termination being open & flanged. Part 1: end correction (2017)
  • Report PhR17-332  Comparisons between measurements and prediction of the acoustic radiation of a termination being open & flanged. Part 2: reflection coefficient (2017)
  • Report PhR17-333  Comparisons between measurements and prediction of the acoustic radiation of a termination being open & flanged. Part 3: radiation impedance (2017)
  • Report PhR17-341  Comparisons between measurements and prediction of the acoustic radiation of a termination being connected & coaxial. Part 1: end correction (2017)
  • Report PhR17-351  Comparisons between measurements and prediction of the acoustic radiation of a termination being connected & staggered. Part 1: end correction (2017)
  • Report PhR17-381  Comparisons between measurements and prediction of the acoustic performance of triple expansion chamber muffers without extended tubes. Part 1: transmission loss with or without flow (2017)
  • Report PhR17-391  Comparisons between measurements and prediction of the acoustic performance of triple expansion chamber muffers with inlet extended tube. Part 1: transmission loss with or without flow (2017)
  • Report PhR17-401  Comparisons between measurements and prediction of the acoustic performance of triple expansion chamber muffers with outlet extended tube. Part 1: transmission loss with or without flow (2017)
  • Report PhR17-411  Comparisons between measurements and prediction of the acoustic performance of triple expansion chamber muffers with inlet & outlet extended tubes. Part 1: transmission loss with or without flow (2017)
  • Report PhR17-421  Comparisons between measurements and prediction of the acoustic performance of simple expansion chamber muffers with overlapping tubes. Part 1: transmission loss with or without flow (2017)

Diagnosis of a situation in terms of acoustics

The diagnosis of a situation in terms of acoustic by ITS is based on a long experience of confrontation with issues having a wide variety (but occurring with some repetition) in relation to acoustic insulation.

This diagnosis may include examination of manufacturer drawings and data, or analysis of acoustic measurements made by others if they are already available: ITS can take over studies performed by control offices or engineering teams either specialised or not (ITS is not intended to compete with them) and particularly action plans performed by others. If needed ITS can perform (promptly) complementary sound records (possibly with spectral analysis) to quantify the noise emission of an equipment or characterize the performance of a construction. ITS can perform other statements and investigations on site (site conditions, accessibility, operating constraints, environment ...).

This task may necessitate the performance of acoustic measurements analysis reports (for measurement performed by ITS or not) or of acoustics calculation sheets: cf. below in the same page.

With respect to such missions performed on its own behalf, ITS has taken out an "overall designer" insurance including notably the operation civil liability insurance, the professional civil liability insurance, and the compulsory insurance of decenal liability.

From the diagnosis of a situation in terms of acoustic by ITS it results an exhaustive explanation of the data taken into account, as well as of various related constraints and a performance target in terms of acoustics appropriate to the considered situation for avoiding acoustic nuisance.

069 workers  noise protection
the on site diagnosis
(above: in an industrial context) is often an important step of an approach of fight against noise
 
 

Acoustic measurement analysis reports, acoustics calculation sheets and sizing sheets of soundproofing equipment

The preparation of acoustic measurements analysis reports, of acoustics calculation sheets and of sizing sheets for soundproofing equipment can be performed by ITS either in accordance with some standards (French or international), or in accordance with the methods of engineering associations (French or international), or based on developments made in-house.

Most of the software allowing acoustic predicting computation at ITS have been developed internally, which allows the integration of experience data complementing the best theoretical approaches of all times carefully selected in order to base the simulation models. (1) (2) (3) (4)

1 in terms of acoustics essentially
2 acoustic multilayered structures: partitions or absorbent linings and dissipative silencers: low or high temperature ...
3 enclosures, screens, laggings, suspended acoustical ceilings, wall cladding for reverberation treatment of rooms...
4 calculations of sound propagation indoor or outdoor, and from inside to outside of a building ...

With respect to such missions performed on its own behalf, ITS has taken out an "overall designer" insurance including notably the operation civil liability insurance, the professional civil liability insurance, and the compulsory insurance of decenal liability.

The preparation of acoustic measurements analysis reports by ITS allows (depending on the case) the characterization of the noise emission of an equipment or of an installation, the determination of the acoustic properties of a material or of a construction system, the quantification of the performance of a construction or of a room in terms of insulation.

See the list of calculations possible by ITS in relation to the analysis of acoustic measurements

  • calculations in relation to the determination of sound insulation performances of enclosures: according to measurements on site
  • calculations in relation to the determination of sound power levels of facilities for the evaluation of sound pressure levels in the environment
  • calculations in relation to the determination of sound power levels emitted by noise sources from the sound pressure
  • calculations in relation to the determination of spatial sound decay in industrial premises, tertiary premises and in subsets of buildings
  • calculations in relation to the determination of reverberation time in industrial premises, tertiary premises and in subsets of buildings
  • calculations in relation to the measurement of sound absorption in a reverberation room
  • calculations in relation to the measurement of sound insulation in buildings and of building elements
  • calculations in relation to the measurement of the performance of ducted silencers: insertion loss, flow noise and total pressure loss

end faq

The performance of acoustics calculation sheets by ITS intervenes in the diagnosis of a situation in terms of acoustics, allows the definition of nuisance prevention means and the search for solutions in relation with the improvement of a situation in terms of acoustics.

See the list of acoustics calculations sheet spossible by ITS

  • calculation of the attenuation of sound during propagation outdoors (including: calculation of atmospheric attenuation)
  • calculation of the acoustic performance in buildings from the performance of elements: acoustic absorption of rooms and enclosed spaces
  • calculation of the acoustic performance in buildings from the performance of elements: sound insulation between premises
  • calculation of the acoustic performance in buildings from the performance of elements: insulation from noise coming from outside
  • calculation of the acoustic performance in buildings from the performance of elements: transmission of indoor sound to the outside
  • determination of the levels of emission sound pressure at the workplace and at other specified positions from the sound power level
  • prediction of control valves aerodynamic noise
  • prediction of jet noise (including safety valves noise)
  • prediction of piping systems discharge parameters
  • calculations in relation to the determination of sound power levels of facilities for the evaluation of sound pressure levels in the environment
  • calculations in relation to the determination of sound power levels emitted by noise sources from the sound pressure
  • calculation of sound propagation and noise prediction in workrooms
  • calculation of the spatial sound decay of industrial premises, tertiary premises (e.g. open spaces)
  • calculation of the reverberation time of industrial premises, tertiary premises (e.g. open spaces, restaurant & canteen, school rooms, nurseries spaces, swimming-pools) or of subsets of buildings

end faq

The writing of sizing sheets by ITS allows the exhibition of evidences of the choices of soundproofing equipment (of those the implementation is compatible with the data taken into account as well as related constraints and meets the objective of results in terms of acoustics) involving a selection of products and of construction systems having the performance the most appropriate for the considered situation.

See the list of calculations possible by ITS in relation to the writing of sizing sheets for soundproofing equipment

  • calculation of the performance of an acoustic screen
  • prediction of the performance of dissipative silencers: insertion loss, flow noise and total pressure loss
  • prediction of the performance of resonnant: insertion loss, flow noise and total pressure loss
  • prediction of the acoustic performance of duct systems: straight duscts, bends, nozzles (including stacks directivity)
  • determination of the performance and sizing of safety valves
  • prediction of the sound reduction index of ducts (duct and pipe)
  • prediction of the sound reduction index of multilayered partitions: plane or orthotropic
  • prediction of the sound absorption coefficient for normal incidence of multilayered partitions: plane or orthotropic
  • prediction of the Sabine's factor of multilayered partitions: plane or orthotropic

end faq

Definition of the means of prevention of nuisance and search for solutions in relation to a situation in terms of acoustics

The definition of means of prevention of nuisance and the search for solutions in relation to a situation in terms of acoustics by ITS is based on the consideration of the technologies being the most appropriate to the considered situation, for an optimal choice of the means that should be considered depending on the context (in particular accounting if any related features of the equipment and acoustic insulation systems and the constraints and consequences of all types generated by their implementation).

This task may necessitate the performance of acoustics calculation sheets and of soundproofing equipment sizing sheets: cf. above in the same page.

With respect to such missions performed on its own behalf, ITS has taken out an "overall designer" insurance including notably the operation civil liability insurance, the professional civil liability insurance, and the compulsory insurance of decenal liability.

From the definition of means of prevention of the nuisance and the search for solutions in relation to a situation in terms of acoustics by ITS it results the choice of soundproofing equipment (of those the implementation is compatible with the data taken into account as well as related constraints and meets the objective of results in terms of acoustics) involving a selection of products and of construction systems having the performance the most appropriate for the considered situation.

Brokerage for the supply of soundproofing materials and equipment

The experience of the human resource of ITS in the past 20 years has allowed to learn to know and appreciate in a positive way material producers and soundproofing equipment manufacturers with which ITS has developed a partnership - often exclusive - in France.

To meet the needs of soundproofing materials and equipment of its customers, ITS can offer (after the diagnosis of a situation in terms of acoustics and / or in the context of the search for solutions in relation to a situation in terms acoustics) products and construction systems (often with an international reputation) carefully selected by ITS for their relevance with respect to the considered objectives, to the guarantees offered in terms of quality of equipment and service and also for their reasonable price.

A guarantee of acoustic performance is issued for each delivery of soundproofing products or construction systems.

ITS then acts as a commercial agent, acting as a technical sales interface with the supplier (partner of ITS) who has all the qualifications and insurances required for the envisaged supplies, who provide all the guarantees of compliance with the rules of Art which are of his specialties and who provides billing and after sale service.

See the list of brokerages possible by ITS for soundproofing materials and equipment

A

Absorbing barrier
Absorbing barrier for cafeteria / refectory
Absorbing barrier for canteen / restaurant / dining rooms
Absorbing barrier for tertiary premises
Absorbing divider
Absorbing lining for acoustic laboratory
Absorbing lining for acoustic measurement rooms
Absorbing lining for anechoic chamber
Absorbing lining for anechoic rooms
Absorbing lining for dead rooms
Absorbing lining for measurement in a free acoustic field
Absorbing lining for test bench
Absorbing lining for wall of canteen / restaurant / dining rooms
Absorbing lining for wall of industrial working premises
Absorbing lining for wall of tertiary premises
Absorbing material for acoustic laboratory
Absorbing material for acoustic measurement rooms
Absorbing material for anechoic chamber
Absorbing material for anechoic rooms
Absorbing material for dead rooms
Absorbing material for measurement in a free acoustic field
Absorbing material for test bench
Absorbing panel
Absorbing panel for wall of canteen / restaurant / dining rooms
Absorbing screen for cafeteria / refectory
Absorbing screen for canteen / restaurant / dining rooms
Absorbing screen for industrial working premises
Absorbing screen for industry
Absorbing screen for tertiary premises
Absorbing wedge for acoustic laboratory
Absorbing wedge for acoustic measurement rooms
Absorbing wedge for anechoic chamber
Absorbing wedge for anechoic rooms
Absorbing wedge for dead rooms
Absorbing wedge for measurement in a free acoustic field
Absorptive silencer
Acoustic cladding with 1 absorbing face
Acoustic cladding with 2 absorbing faces
Acoustic cladding without any absorbing face
Acoustic lining for wall of canteen / restaurant/ dining rooms
Acoustic complex
Acoustic door
Acoustic door set
Acoustic foam
Acoustic foam M1
Acoustic felt
Acoustic insulation panel with 1 absorbing face
Acoustic insulation panel with 2 absorbing faces
Acoustic insulation panel without any absorbing face
Acoustic panel
Acoustic panel for wall of canteen / restaurant / dining rooms
Acoustic panel for wall of industrial working premises
Acoustic panel for wall of tertiary premises
Acoustic window set
Air intake silencer for combustion turbines / gas turbines

B

Baffle silencer
Barrier with high sound absorption
Blow down silencer
Blow off silencer for pressurized gas

D

Discharge silencer
Dissipative silencer for ventilation / air conditioning system
Divider with high sound absorption

E

Elastomer
Exhaust silencer for combustion turbines / gas turbines
Exhaust silencer for generator set
Exhaust silencer for heat engine
Exhaust silencer for industrial engine
Exhaust silencer for reciprocating internal combustion engine

F

Fire resistant acoustic door

I

Industrial silencer
Industrial soundproofing booth
Industrial soundproofing panel with 1 absorbing face
Industrial soundproofing panel with 2 absorbing faces
Industrial soundproofing panel without any absorbing face

L

Lagging for duct and pipe

M

Metallic acoustic doorset
Metallic acoustic insulation panel with 1 absorbing face
Metallic acoustic insulation panel with 2 absorbing faces
Metallic acoustic insulation panel without any absorbing face
Metallic acoustic window set

N

Noise diminution device for combustion turbines / gas turbines air intake
Noise diminution device for combustion turbines / gas turbines exhaust
Noise diminution device for generator set exhaust
Noise diminution device for industrial engine exhaust
Noise diminution device for industrial fan
Noise limitation device for combustion turbines / gas turbines air intake
Noise limitation device for combustion turbines / gas turbines exhaust
Noise limitation device for generator set exhaust
Noise limitation device for industrial engine exhaust
Noise limitation device for industrial fan
Noise reducing panel
Noise reduction device for blowing off / venting of pressurized gas
Noise reduction device for combustion turbines / gas turbines air intake
Noise reduction device for combustion turbines / gas turbines exhaust
Noise reduction device for discharge / blow down
Noise reduction device for generator set exhaust
Noise reduction device for heat engine exhaust
Noise reduction device for industrial engine exhaust
Noise reduction device for industrial fan
Noise reduction device for reciprocating internal combustion engine exhaust

P

Panel with high sound absorption
Polyester wool
Portable absorbing wall
Portable absorbing wall for cafeteria / refectory
Portable absorbing wall for canteen / restaurant / dining rooms
Portable absorbing wall for tertiary premises
Portable sound absorbing wall
Portable soundproofing wall
Portable wall with high sound absorption

R

Rockwool

S

Silencer for air inlet / effluents outlet in industrial process
Silencer for electric valves
Silencer for industrial soundproofing
Silencer for industrial fan
Silencer splitter (baffle) for air inlet / effluents outlet in industrial process
Sound absorbing barrier
Sound absorbing divider
Sound absorbing divider for cafeteria / refectory
Sound absorbing divider for canteen / restaurant / dining rooms
Sound absorbing divider for tertiary premises
Sound absorbing panel
Sound trap
Soundproof panel with 1 absorbing face
Soundproof panel with 2 absorbing faces
Soundproof panel without any absorbing face
Soundproofed door
Soundproofing barrier
Soundproofing device for generator set
Soundproofing device for industrial engine
Soundproofing divider
Soundproofing kit for industrial fan
Soundproofing material
Soundproofing panel
Splitter silencer
Spring isolator
Steam vent silencer
Suspended baffle for industrial working premises
Suspended baffle for tertiary premises
Suspended ceiling tile for industial working premises
Suspended ceiling tile for tertiary premises

V

Vent silencer for pressurized gas
Ventilation silencer
Viscoelastic material

end Faq

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