During its more than 20 years in the industry, Brekke & Strand Akustikk AS has grown to become Norway's leading specialists within the areas of sound and vibration. Among our more than 40 highly qualified acousticians, we have several pioneers with many years of experience in construction, industry and transport. We are also active in research environments, we are conduct teaching and lectures and we are part of the reference groups that administer Norwegian legislation concerning sound and noise conditions. Our professional reputation means that you as a customer will always get the best advice from us.


Brekke & Strand accepts all tasks in the fields of acoustics, noise and vibration, from simple acoustic measurements to complex special tasks. Our company has extensive knowledge and high levels of skills in our field and in the industries in which we work. This enables us to resolve complex challenges in both new and existing projects. Because of our level of expertise, we are often invited to work in collaboration with other large consultancy firms, even though they may have their own acoustic expertise.


Brekke & Strand has the longest and widest level of experience in the market. As a company, we have operated in the Norwegian market since 1988, but many of our staff have been working in the field for over 30 years. We have helped to develop the field and expand the range of activities that are expected of an acoustician today. Our extensive experience in the field of acoustics therefore makes us an attractive partner in all our markets.


Brekke & Strand possesses the highest level of expertise in the Nordic region in the following areas: building acoustics, room acoustics, special studies in oil & gas, noise from wind turbines, noise from ventilation systems, noise and structural sounds from roads and rail.
            We have a major focus on ensuring that all our employees are given the opportunity to specialize in specific topics through courses, studies and project work, in order to maintain and especially to develop our areas of expertise.

Articles & presentations

A brief introduction into the violin acoustics history (Anders Buen, 2006)

An in-depth analysis of the double bass-stage floor contact (Anders Buen, 2008)

Can we hear the geometrical measures of a violin? (Anders Buen, 2006)

Comparing The Sound Of Golden Age And Modern Violins: Long-Time-Average Spectra (Anders Buen, 2005)

Control of sound insulation in glass facades at Oslo’s Opera House (Sigmund Olafsen & Per Kåre Limmesand, 2010)

Den gode feletonen (Anders Buen, 2012)

Differences of Sound Spectra in Violins by Stradivari and Guarneri del Gesú (Anders Buen, 2003)

Diffusivity and its Significance to Effective Seat Absorption in Concert Halls (Magne Skålevik, 2008)

Diffusivity and its Significance to Effective Seat Absorption in Concert Halls (Poster) (Magne Skålevik, 2008)

Diffusivity of Performance Spaces - Significance to Perceived Sound Quality from Directive Sources (Magne Skålevik, 2006)

Double basses on the stage floor (Anders Buen, 2007)

Early Design Criteria for Small Multipurpose Cultural Houses (Anders Buen, 2010)

Environmental noise monitoring for the trams of Oslo (Sigmund Olafsen, 2015)

Et premissfagstilnærming til BIM (Ivar Thomassen, 2015)

Field vs. Laboratory Sound Insulation of Glass Facades (Sigmund Olafsen & Maria K. Strand, 2009)

Frequency Limits of Flat Panel Reflector Arrays (Magne Skålevik, 2008)

How dry do the recording for auralization need to be? (Anders Buen, 2008)

Low Frequency Limits of Reflector Arrays (Magne Skålevik, 2008)

Low Frequency Limits of Reflector Arrays (2) (Magne Skålevik, 2008)

Low Frequency Limits of Reflector Arrays (Poster) (Magne Skålevik, 2008)

Objective Parameters – Can They Predict and Explain Subjective Concert Hall Preference (Magne Skålevik, 2011)

On the Struggle to Find a Set of Room Acoustical Parameters that Explains and Predicts Subjective Ranking of Concert Halls (Magne Skålevik, 2011)

On Timbre Parameters And Sound Levels Of Recorded Old Violins (Anders Buen, 2007)

One the interaction between double basses and the stage floor-poster (Anders Buen, 2007)



Open vs closed ventilation devices – impact on indoor sound pressure levels (Sigmund Olafsen, 2012)

Operating Deflection Modes In Five Conventional And Two Unconventional Violins (Anders Buen, 2003)

Orchestra Canopy Arrays - Some Significant Features (Magne Skålevik, 2008)

Prediction and measurement of indoor noise from road traffic (Sigmund Olafsen, 2011)

Reflector Arrays and Their Frequency Limits (Magne Skålevik, 2008)

Reverberation Time – The Mother of All Room Acoustical Parameters (Magne Skålevik, 2010)

Room Acoustic Parameters and Their Distributions Over Concert Hall Seats (Magne Skålevik, 2010)

Room Acoustical Parameters at Listeners’ Ears – Can Preferred Concert Hall Acoustics Be Predicted and Explained (Magne Skålevik, 2010)

Room Acoustics in Rehersal Rooms and Public Areas in the Norwegian National Opera (Per Kåre Limmesand & Sigmund Olafsen, 2010)

Room Acoustics in the scene II in the new Opera and the Ridehuset - two variable acoustics coupled space venues (Anders Buen & Lars Strand, 2008)

Schroeder Frequency Revisited (Magne Skålevik, 2011)

Simplified Room Acoustic Measurements (Anders Buen, 2008)

Small Room Acoustics – The Hard Case (Magne Skålevik, 2011)

Sound Radiation from the Chest of Bass Singers (Magne Skålevik, 2008)

Stairway - A New Approach to Modelling of Physical or Perceived Noise (Sigmund Olafsen, 2006)

The influence of a large reflector over the orchestra pit in an Opera House (Anders Buen, 2002)

The Lindeman Hall of Oslo - Evidense of low-frequency radiation from stage floor (Anders Buen, 2010)

The Spectrum Shape of Outdoor and Indoor Road Traffic Noise (Tore F. Killengreen & Sigmund Olafsen, 2007)

The Spectrum Shape of Outdoor and Indoor Road Traffic Noise (Poster) (Tore F. Killengreen & Sigmund Olafsen, 2012)

Towards an Empirical Model for Impact Noise Through Heavy Floors (Sigmund Olafsen, 2012)

Towards an Empirical Model for Sound Insulation Against Tram Noise (Sigmund Olafsen, 2012)

Using Planning Guidelines as a Tool to AchieveGood Soundscapes for Residents (Sigmund Olafsen, 2009)

What is old italian timbre? (Anders Buen, 2010)


This page was created by our own Magne Skålevik: AKUTEK (external link).

The page is dedicated to the themes of room acoustics, music acoustics, speech acoustics, perception and their interrelationships generally, as well as concert hall acoustics and stage acoustics in particular.