What Groupe Gamba does

Groupe Gamba is a France-based acoustic and vibratory engineering consultancy (bureau d'études) founded in 1976, providing engineering studies, maîtrise d'œuvre, assistance and expertise across building acoustics, industrial noise, transport infrastructure, wind farms, airports, performance venues, and territorial planning. The firm operates from seven regional offices across France (Toulouse HQ, Paris/Saint-Denis, Lyon, Marseille, Nantes, Rodez) plus an international office in Rio de Janeiro, Brazil, with a headcount of 51-100 employees under a SASU single-shareholder corporate structure led by President Fabien Krajcarz.

Its core technology asset is a proprietary software suite of five products developed in-house over decades: AcouS STIFF® (sound reduction index prediction), AcouS STING® (impact noise), AcouS STICS21® (ISO 12354-based insulation calculations between rooms), AcouS PROPA® (indoor and outdoor sound propagation modeling), and DIAG.Lexd® (workplace noise exposure diagnostics per NF EN ISO 9612). These tools rest on deterministic numerical methods including finite element modeling, diffuse reflection models based on Lambert's law, Maekawa diffraction theory, and standardized ISO calculation frameworks, and are integrated with AutoCAD, Revit, and SketchUp.

The business model combines three revenue streams: professional engineering services billed on a project basis, one-time software licensing with recurring annual maintenance contracts, and professional training delivered in inter-company and intra-company formats financed through French professional-training mechanisms. The firm holds five OPQIBI certifications (1601-1605) across acoustic studies and transport, industrial, building, and environmental engineering, and maintains active membership in standards bodies (AFNOR) and professional networks (AIOc, GIAc, CINOV, AFTIM, SFA, CACT).

Name

Groupe Gamba

Legal name

GROUPE GAMBA

Website

https://gamba.fr

Company type

Private

Founded year

1976

Operating status

Operating

Headcount range

51–100 employees

Short description

Groupe Gamba is a France-headquartered acoustic and vibratory engineering consultancy offering proprietary AcouS software, multi-domain engineering studies, and professional training across building, industrial, transport, wind, and environmental verticals to enterprise and public-sector clients.

Ownership category

akta.pro rank

Headquarters

HQ city

Jonage

HQ country

France

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Acoustic and Vibration Engineering Consulting: Engineering studies, maîtrise d'œuvre, assistance and expertise services for acoustic and vibration projects across building, industry, transport infrastructure, wind farms, and performance venues.
2. Software Licensing and Maintenance: Sale of proprietary acoustic simulation software (AcouS STIFF®, AcouS STING®, AcouS STICS21®, AcouS PROPA®, DIAG.Lexd®) with annual maintenance contracts including updates, phone support, and user meetings.
3. Professional Training: Inter-company and intra-company training courses on acoustic engineering and software usage. Training catalog covers standard and custom programs with financing options available.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Groupe Gamba is a French acoustic and vibration engineering consultancy that delivers specialized engineering studies (bureau d'études) and develops proprietary software tools (the AcouS® suite and DIAG.Lexd®) for modeling and analyzing sound and vibration in buildings, infrastructure, industrial facilities, and transport systems. The firm also delivers professional training and conducts R&D in acoustic engineering.

Product overview

Groupe Gamba is an acoustic and vibratory engineering consultancy offering proprietary software tools alongside consulting services. The product portfolio consists of five integrated software solutions: AcouS STIFF® for sound transmission prediction, AcouS STING® for impact noise assessment, AcouS STICS21® for integrated insulation calculations between rooms, AcouS PROPA® for acoustic propagation modeling (indoor and outdoor), and DIAG.Lexd® for workplace noise exposure diagnostics. These products are complemented by engineering services, professional training, and R&D activities, with the software suite designed to work both independently and in combination for comprehensive acoustic and vibratory analysis.

Differentiator

Problem solved

Functional benefit

Brands

• AcouS STIFF®: Software for predicting sound reduction index, complying with ISO 717-1, NFS 31-051 and ASTM-E413 standards
• AcouS STING®
• AcouS STICS21®
• AcouS PROPA®
• DIAG.Lexd®

Products and services

• AcouS STIFF® Proprietary software tool for structure-borne sound and impact noise prediction, part of the AcouS® suite used by acoustic engineering professionals and design offices.
• AcouS STING® Proprietary software tool for airborne sound insulation modeling, part of the AcouS® suite used by acoustic engineering professionals and design offices.
• AcouS STICS21® Proprietary software tool in the AcouS® suite for acoustic modeling used by acoustic engineering professionals and design offices.
• AcouS PROPA® Proprietary software tool for outdoor sound propagation modeling, part of the AcouS® suite used by acoustic engineering professionals and design offices.
• DIAG.Lexd® Proprietary diagnostic software tool for regulatory acoustic compliance assessments, used by acoustic engineering professionals and design offices.
• Acoustic and vibration engineering consulting Specialized engineering consultancy services (bureau d'études) for acoustic and vibratory studies delivered to construction, industrial, transport, and energy sector clients.
• Professional training in acoustic engineering Training programs in acoustic engineering for professionals, complementing the firm's consulting and software offerings.

Segments7 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature5 records

Partnerships

15 partnerships are on record, tiered core and minor.

• CSTB (Centre Scientifique et Technique du Bâtiment)coreStrategic or Co-development PartnerCollaborated on the URBASON project for developing software methodology for sustainable urban soundscape planning, along with ACOUPHEN, GEOMOD, CASA (CRESSON), and LICIT (IFSTTAR). Also mentioned as partner in software development using MEFISSTO for finite element vibration propagation modeling.
• CTBA and InterAcminorStrategic or Co-development PartnerCollaborated on the ACOU-BAIE project for creating a design model to optimize acoustic performance of wooden joinery.
• EUPHONIAminorStrategic or Co-development PartnerCollaborated on development of a method for evaluating building acoustic isolation against exterior noise.
• Aluminium PechineyminorStrategic or Co-development PartnerCo-traitance partner with ANACT for elaboration of a method for measuring worker noise exposure.
• ABIESminorStrategic or Co-development PartnerCo-traitance partner on ADEME contract for studying technical elements specific to characterization and regulation of wind farm noise emissions.
• ONERA-CERTminorStrategic or Co-development PartnerCo-traitance partner on SRETIE contract for radiation of ribbed metal structures (siding type) in collaboration with Université Paul Sabatier.
• Université Paul SabatierminorStrategic or Co-development PartnerAcademic partner on SRETIE contracts including propagation model development and speech intelligibility testing method.
• Université de Toulouse le MirailminorStrategic or Co-development PartnerAcademic partner on speech intelligibility study with EDF/DER and noise exposure method development with ANACT.
• Industrial Material Partners (ALSTOM, ROCKWOOL, Lièges HPK, ONDULINE, ISOVER, CTTB, LAFARGE PLATRES, SONOKELL, BPB Placo, AIV)minorStrategic or Co-development PartnerVarious contracts for acoustic behavior studies of construction materials including absorption, sound reduction, impact noise, and resilient element performance.
• EQUILAB (G.A)minorStrategic or Co-development PartnerPartner for equipment noise studies contracts.
• SRETIE (Ministère de l'Environnement)coreStrategic or Co-development PartnerMultiple research contracts including propagation model development, speech intelligibility testing, metal structure radiation, ACOU-BAIE project, building isolation evaluation, and neighborhood noise assessment. Mandate holder for Unique Acoustic Indicator (IUA) convention.
• ADEMEcoreStrategic or Co-development PartnerContracts for wind farm noise characterization studies and URBASON sustainable urban soundscape planning project.
• ANACTcoreStrategic or Co-development PartnerContract for elaboration of a method for measuring worker noise exposure in collaboration with Aluminium Pechiney.
• Ministère de l'Equipement, des Transports, du Logement, du Tourisme et de la MerminorStrategic or Co-development PartnerContract for acoustic performance study of cellular concrete including thermal and acoustic insulation compatibility in cellular concrete construction systems.
• OVHminorOthersWebsite hosting provider as stated in legal mentions.

Scale indicators4 records

Recent moves1 record

Expansion highlights5 records

Direct peers

• AIA Ingénierie Acoustique: Acoustic engineering practice within the AIA Ingénierie group, providing building and environmental acoustics consulting in France. Directly comparable on project-based acoustique du batiment consulting.
• Müller-BBM: German acoustic and vibration engineering consultancy with deep expertise in building, environmental, transport, and industrial acoustics. Closest European peer on technical depth and consulting-plus-software model.
• SoundPLAN GmbH: German developer of SoundPLAN noise-mapping and acoustic propagation software. Direct competitor to the AcouS PROPA software for outdoor and industrial acoustic propagation modelling.
• Acoem (formerly 01dB): French-headquartered acoustics, vibration and air-quality measurement specialist. Competes head-to-head with Groupe Gamba across industrial acoustics, noise mapping, and environmental consulting across France and internationally.
• Datakustik (Cadna/AIMA): Developer of Cadna noise-mapping software and consulting services for environmental acoustics. Directly comparable to AcouS PROPA on outdoor propagation and noise mapping functionality.
• Peutz Group: Dutch/German engineering consultancy specialised in acoustics, building physics, and environmental noise. Comparable on multidisciplinary acoustic engineering services and standards-driven consulting.
• Acoucite: French acoustic engineering consultancy offering building, environmental, and industrial acoustics services. Closest domestic peer on engineering services with similar French geographic focus and use-case mix.

Regional players

• CSD Ingenieurs (Acoustics division): Swiss engineering firm offering acoustics, vibration and building physics consulting across infrastructure and building projects. Comparable discipline mix but operates primarily in Switzerland and the Alpine region rather than France.

Broad incumbents

• Saint-Gobain Ecophon (Acoustics R&D services): Global building materials group with acoustics-focused R&D and consultancy offerings through Ecophon. Adjacent incumbent operating in the same building acoustics use cases from a product side rather than pure consulting.
• Brüel & Kjær (HBK - Hottinger Brüel & Kjær): Global leader in acoustic and vibration measurement instrumentation and software. Larger incumbent supplying hardware, software, and consulting-adjacent services to the same industrial and environmental acoustics end markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/GambaAcoustique
• LinkedInlinkedin.com/company/gamba-acoustique

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Groupe Gamba