Soft dB : A Leader In Acoustic Engineering

Soft dB  has been offering acoustic and vibration consulting since 1996. Our team of engineers and technical consultants are specialists in the various fields of acoustic engineering: environmental, architectural,residential, commercial, institutional and industrial. Whether you have problems with noise control, noise pollution, soundproofing, sound insulation, or with reverberation control, our acoustic experts will give you state of the art acoustic solutions adapted to your needs.

We have offices in Boston, Montreal, Quebec City, Sherbrooke, and Malartic. We have the capabilities to offer acoustic consultancy services throughout Quebec, Canada, the United States, Europe, and Africa.

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Our Services

– Noise and vibration engineering
– Live and online acoustic monitoring
– Acoustic imaging, sound mapping
– Acoustic product design
– Sound masking, speech intelligibility and confidentiality
– Engineering in active noise control
– Application of noise standards and regulations
– Customized service and turnkey deliveries

Professional Services of Acoustic Engineering


  • Noise and vibration measurement and data analysis;
  • Field and laboratory sound insulation testing and partition design for walls, floors, and facades (STC,ASTC, FIIC, OITC) in order to make acoustical improvements to existing installations;
  • Reverberation (echo) control and sound clarity measurement (RT60, C80);
  • Articulation, privacy, and speech intelligibility assessments (AISII, SPC);
  • HVAC unit sound measurement (AHRI 350, AHRI 575, AHRI 230);
  • HVAC noise prediction in buildings (AHRI 885, ASHRAE);
  • Computer-based modelling and auralisation (RAP-ONE, CATT, INSUL);
  • Unknown noise and vibration sources identification and treatment recommendations;
  • Clear and concise reports or design reviews for our clients;
  • Comprehensive technical support;


  • Noise and vibration measurement and data analysis;
  • Noise and vibration impact assessments;
  • Regulatory compliance assessments (Quebec 98-01, Ontario NPC-300, NB 87-83);
  • Noise and vibration monitoring & mapping;
  • Acoustic modelling using advanced prediction software;
  • Design and specification of noise control measures;
  • Technical support to clients.


  • Noise and vibration measurement;
  • Noise and vibratory analysis from all types of machinery, HVAC systems, building services, and transportation equipment;
  • Sound pressure, sound intensity, sound power measurements;
  • Tri-axial vibration measurements;
  • Noise or vibration source identification;
  • The design of noise and vibration control structures and components;
  • Acoustic non-destructive testing and evaluation (NDT & NDE);
  • Vibro-acoustic product design.

Remote Monitoring

  • Continuous noise and vibration impact assessments using Class 1 equipment;
  • Web-based client reporting;
  • Real-Time regulatory compliance assessments for noise and vibration with cross-media alert functions;
  • Real-Time monitoring of noise and vibration and mapping;
  • Real-Time monitoring of traffic characteristics and patterns;
  • Accurate measurements of dust particle concentrations (TSP, PM10, PM2.5 or PM1.0);
  • Integrated weather stations;
  • Acoustic modeling with state-of-the-art prediction software;
  • Hydrophones for real-time monitoring of underwater noise such as ship traffic and piling;
  • Noise control design and measurement specification;
  • Technical support to clients.

You have questions ?

Our approach to Acoustic and Vibration is unique. Come and listen how we can change your lives.